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<h2 title="Class Projection" class="title">Class Projection</h2>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../PIRL/Image_Tools/Equirectangular_Projection.html" title="class in PIRL.Image_Tools">Equirectangular_Projection</a>, <a href="../../PIRL/Image_Tools/Polar_Stereographic_Elliptical_Projection.html" title="class in PIRL.Image_Tools">Polar_Stereographic_Elliptical_Projection</a>, <a href="../../PIRL/Image_Tools/Polar_Stereographic_Spherical_Projection.html" title="class in PIRL.Image_Tools">Polar_Stereographic_Spherical_Projection</a></dd>
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<pre>public class <span class="strong">Projection</span>
extends <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">A <i>Projection</i> is used to algorithmically map, or "project",
from one image coordinate system to another while maintaining the
spatial relationships of all coordinates.
<p>
Spatial projections are used in many contexts. The typical example is
when a camera image of curved surface is to be mapped as if the
surface were flat. The commonly known Mercator projection of a map of
the Earth is such a projection. There are many map projections. See
Snyder, John P., "Map Projections - A Working Manual", U.S Geological
Survey Professional Paper 1395, 1987 for a discussion of the map
projection algorithm used in these classes.
<p>
The core projection characteristic is an algorithm that maps
coordinates from one coordinate system to another. The specific
projection algorithms used - the implementation of a set of equations
- will, of course, vary from one type of projection to another to
achieve the desired mapping effect. In addition, the choice of
projection is likey to depend on the range of coordinate values to be
mapped - projections are likely to have increasing visual distortion
effects as boundary conditions are approached - or the accuracy to be
achieved - the implementing equations are like to make various
simplifying assumptions. Nevertheless, all projections are expected
to map coordinates between image and world coordinate systems. The
former is in image pixel units of sample - horizontal distance from
the left-most pixel - and and line - vertical distance from the
top-most line - of a rectangular array of pixels. The latter is
typically in planetary longitude - angular angular distance about the
center of the planet relative to a zero-reference longitude - and
latitude - angular angular distance about the center of the planet
relative to the equator - usually measured in decimal degrees.
However, other "world" coordinate systems are quite possible. In
order to accommodate images of arbitrary location, an intermediate
projeciton coordinate system is typically used by the projection
equations, with a simple translational equation used to map between
the projection coordinate system and the location of the image raster
in that system.
<p>
A specific projection, implemented as a subclass of Projection, will
require various parameters need by the projection equations. These
are supplied by a PVL Parameter Aggregate. Because this Projection
implementation assumes that planetary projections are to be
implemented by subclasses, the Parameter group used to construct a
Projection collects the common set of parameter values required by
the specific projection algorithms. If all the required parameters
are not provided the default identity projection - in which
coordinate values are not changed - is used.
<p></div>
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<h3>Field Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Center_Latitude">Center_Latitude</a></strong></code>
<div class="block">Projection planetographic center latitude in radians.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#CENTER_LATITUDE_PARAMETER_NAME">CENTER_LATITUDE_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Center_Longitude">Center_Longitude</a></strong></code>
<div class="block">Projection center longitude in radians.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#CENTER_LONGITUDE_PARAMETER_NAME">CENTER_LONGITUDE_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#DBL_EPSILON">DBL_EPSILON</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#DEFAULT_NA">DEFAULT_NA</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#DEFAULT_USE_SPHERICAL">DEFAULT_USE_SPHERICAL</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Eccentricity">Eccentricity</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#EQUIRECTANGULAR_PROJECTION_NAME">EQUIRECTANGULAR_PROJECTION_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Equitorial_Radius">Equitorial_Radius</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#EQUITORIAL_RADIUS_PARAMETER_NAME">EQUITORIAL_RADIUS_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#ID">ID</a></strong></code>
<div class="block">Class name and version identification.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Line_Offset">Line_Offset</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#LINE_OFFSET_PARAMETER_NAME">LINE_OFFSET_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Meters_per_Pixel">Meters_per_Pixel</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#METERS_PER_PIXEL_PARAMETER_NAME">METERS_PER_PIXEL_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#NA">NA</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#NOT_APPLICABLE_CONSTANT_PARAMETER_NAME">NOT_APPLICABLE_CONSTANT_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Not_Identity">Not_Identity</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#PI_OVER_2">PI_OVER_2</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#PI_OVER_4">PI_OVER_4</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Planetocentric">Planetocentric</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#PLANETOCENTRIC_PROJECTION_NAME">PLANETOCENTRIC_PROJECTION_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Polar_Radius">Polar_Radius</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POLAR_RADIUS_PARAMETER_NAME">POLAR_RADIUS_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POLAR_STEREOGRAPHIC_PROJECTION_NAME">POLAR_STEREOGRAPHIC_PROJECTION_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POLARSTEREOGRAPHIC_PROJECTION_NAME">POLARSTEREOGRAPHIC_PROJECTION_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POSITIVE_LONGITUDE_EAST_NAME">POSITIVE_LONGITUDE_EAST_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POSITIVE_LONGITUDE_PARAMETER_NAME">POSITIVE_LONGITUDE_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#POSITIVE_LONGITUDE_WEST_NAME">POSITIVE_LONGITUDE_WEST_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Positive_West">Positive_West</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#PROJECTION_LATITUDE_PARAMETER_NAME">PROJECTION_LATITUDE_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#PROJECTION_PARAMETER_NAME">PROJECTION_PARAMETER_NAME</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Sample_Offset">Sample_Offset</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#SAMPLE_OFFSET_PARAMETER_NAME">SAMPLE_OFFSET_PARAMETER_NAME</a></strong></code> </td>
</tr>
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<h3>Constructor Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Projection()">Projection</a></strong>()</code>
<div class="block">Constructs a default identity Projection.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Projection(PIRL.PVL.Parameter)">Projection</a></strong>(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> parameters)</code>
<div class="block">Constructs a Projection from a Parameter Aggregate.</div>
</td>
</tr>
</table>
</li>
</ul>
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<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Center_Latitude()">Center_Latitude</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Center_Longitude()">Center_Longitude</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Create(PIRL.PVL.Parameter)">Create</a></strong>(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> parameters)</code>
<div class="block">Creates a Projection object that uses an appropriate specific
Projection subclass projection implementation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Decimal_Degrees(java.lang.String)">Decimal_Degrees</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> parts)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Degrees_Minutes_Seconds(double)">Degrees_Minutes_Seconds</a></strong>(double angle)</code>
<div class="block">Converts an angle in decimal degrees, to a degrees, minutes, seconds
representation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Eccentricity()">Eccentricity</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Eccentricity(double, double)">Eccentricity</a></strong>(double polar_radius,
double equitorial_radius)</code>
<div class="block">Calculate the planet eccentricity.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Equitorial_Radius()">Equitorial_Radius</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected static <a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Find_Parameter(PIRL.PVL.Parameter, java.lang.String)">Find_Parameter</a></strong>(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> label,
<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</code>
<div class="block">Find a named parameter in PDS label parameters.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Hours_Minutes_Seconds(double)">Hours_Minutes_Seconds</a></strong>(double angle)</code>
<div class="block">Converts an angle in decimal degrees, to an hours, minutes, seconds
representation.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Is_Identity()">Is_Identity</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Line_Offset()">Line_Offset</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Line_to_Projection_Y(double)">Line_to_Projection_Y</a></strong>(double line)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Local_Radius(double)">Local_Radius</a></strong>(double latitude)</code>
<div class="block">Calculate the radius of the planet at some latitude.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#main(java.lang.String[])">main</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[] args)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Name()">Name</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Planetocentric_to_Planetographic(double)">Planetocentric_to_Planetographic</a></strong>(double latitude)</code>
<div class="block">Convert planetocentric latitude to planetographic latitude.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Planetocentric()">Planetocentric</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Planetocentric(boolean)">Planetocentric</a></strong>(boolean planetocentric)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Planetographic_to_Planetocentric(double)">Planetographic_to_Planetocentric</a></strong>(double latitude)</code>
<div class="block">Convert planetographic latitude to planetocentric latitude.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Polar_Radius()">Polar_Radius</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Positive_West()">Positive_West</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Positive_West(boolean)">Positive_West</a></strong>(boolean positive_west)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Projection_Class_Name(java.lang.String)">Projection_Class_Name</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> projection_name)</code>
<div class="block">Produce a class name for a projection name.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Projection_X_to_Sample(double)">Projection_X_to_Sample</a></strong>(double projection_x)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Projection_Y_to_Line(double)">Projection_Y_to_Line</a></strong>(double projection_y)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Resolution()">Resolution</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Sample_Offset()">Sample_Offset</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Sample_to_Projection_X(double)">Sample_to_Projection_X</a></strong>(double sample)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#To_180(double)">To_180</a></strong>(double longitude)</code>
<div class="block">Ensure that a longitude value is in the range -180 to 180 degrees.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#To_360(double)">To_360</a></strong>(double longitude)</code>
<div class="block">Ensure that a longitude value is in the range 0 to 360 degrees.</div>
</td>
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<td class="colFirst"><code><a href="/usr/share/doc/default-jdk-doc/api/java/awt/Point.html?is-external=true" title="class or interface in java.awt">Point</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#to_Image(java.awt.geom.Point2D)">to_Image</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.html?is-external=true" title="class or interface in java.awt.geom">Point2D</a> world_coordinate)</code>
<div class="block">Get the image sample,line coordinate for a world longitude,latitude
coordinate.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.Double.html?is-external=true" title="class or interface in java.awt.geom">Point2D.Double</a></code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#to_World(java.awt.geom.Point2D)">to_World</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.html?is-external=true" title="class or interface in java.awt.geom">Point2D</a> image_coordinate)</code>
<div class="block">Get the world longitude,latitude coordinate for an image sample.line
coordinate.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Usage()">Usage</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../PIRL/Image_Tools/Projection.html#Use_Spherical(boolean)">Use_Spherical</a></strong>(boolean enabled)</code> </td>
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<h3>Methods inherited from class java.lang.<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="/usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ID</pre>
<div class="block">Class name and version identification.</div>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> PROJECTION_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> EQUIRECTANGULAR_PROJECTION_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POLAR_STEREOGRAPHIC_PROJECTION_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POLARSTEREOGRAPHIC_PROJECTION_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> PROJECTION_LATITUDE_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> PLANETOCENTRIC_PROJECTION_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> EQUITORIAL_RADIUS_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POLAR_RADIUS_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> METERS_PER_PIXEL_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POSITIVE_LONGITUDE_PARAMETER_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../constant-values.html#PIRL.Image_Tools.Projection.POSITIVE_LONGITUDE_PARAMETER_NAME">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POSITIVE_LONGITUDE_EAST_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> POSITIVE_LONGITUDE_WEST_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../constant-values.html#PIRL.Image_Tools.Projection.POSITIVE_LONGITUDE_WEST_NAME">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> CENTER_LATITUDE_PARAMETER_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../constant-values.html#PIRL.Image_Tools.Projection.CENTER_LATITUDE_PARAMETER_NAME">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> CENTER_LONGITUDE_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> SAMPLE_OFFSET_PARAMETER_NAME</pre>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> LINE_OFFSET_PARAMETER_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../constant-values.html#PIRL.Image_Tools.Projection.LINE_OFFSET_PARAMETER_NAME">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> NOT_APPLICABLE_CONSTANT_PARAMETER_NAME</pre>
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<pre>protected boolean Not_Identity</pre>
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<pre>protected boolean Positive_West</pre>
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<pre>protected boolean Planetocentric</pre>
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<pre>public static final double DEFAULT_NA</pre>
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<pre>protected double Meters_per_Pixel</pre>
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<pre>protected double Equitorial_Radius</pre>
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<pre>protected double Polar_Radius</pre>
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<pre>protected double NA</pre>
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<pre>protected double Center_Latitude</pre>
<div class="block">Projection planetographic center latitude in radians.</div>
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<pre>protected double Center_Longitude</pre>
<div class="block">Projection center longitude in radians.</div>
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<pre>protected double Sample_Offset</pre>
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<pre>protected double Line_Offset</pre>
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<pre>protected double Eccentricity</pre>
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<pre>public static final double PI_OVER_2</pre>
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<pre>public static final double PI_OVER_4</pre>
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<pre>public static final double DBL_EPSILON</pre>
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<pre>public static final boolean DEFAULT_USE_SPHERICAL</pre>
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<pre>public Projection(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> parameters)
throws <a href="../../PIRL/PVL/PVL_Exception.html" title="class in PIRL.PVL">PVL_Exception</a></pre>
<div class="block">Constructs a Projection from a Parameter Aggregate.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>parameters</code> - The Parameter Aggregate containing (at least) the
minimally required parameter values. If all required parameters
are not provided - including if the argument is null - the <a href="../../PIRL/Image_Tools/Projection.html#Is_Identity()"><code>identity projection flag</code></a> is set.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../PIRL/PVL/PVL_Exception.html" title="class in PIRL.PVL">PVL_Exception</a></code> - If there is a problem reading the parameters
or a parameter is found to have an invalid value.</dd></dl>
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<pre>public Projection()</pre>
<div class="block">Constructs a default identity Projection.
<p>
The <a href="../../PIRL/Image_Tools/Projection.html#Is_Identity()"><code>identity projection flag</code></a> is set.</div>
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<pre>public static <a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a> Create(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> parameters)
throws <a href="../../PIRL/PVL/PVL_Exception.html" title="class in PIRL.PVL">PVL_Exception</a>,
<a href="/usr/share/doc/default-jdk-doc/api/java/util/NoSuchElementException.html?is-external=true" title="class or interface in java.util">NoSuchElementException</a>,
<a href="/usr/share/doc/default-jdk-doc/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang">UnsupportedOperationException</a>,
<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
<div class="block">Creates a Projection object that uses an appropriate specific
Projection subclass projection implementation.
<p>
The choice of specific projection implementation is based on the
value of the Parameter having the <a href="../../PIRL/Image_Tools/Projection.html#PROJECTION_PARAMETER_NAME"><code>PROJECTION_PARAMETER_NAME</code></a>.
This name is used to assemble a <a href="../../PIRL/Image_Tools/Projection.html#Projection_Class_Name(java.lang.String)"><code>projection specific class name</code></a> to be loaded. Once loaded, a new
instance is constructed using the parameters argument.
<p>
As a special case, if the projection name is <a href="../../PIRL/Image_Tools/Projection.html#POLAR_STEREOGRAPHIC_PROJECTION_NAME"><code>POLAR_STEREOGRAPHIC_PROJECTION_NAME</code></a> the "_Spherical" suffix is
appended if <a href="../../PIRL/Image_Tools/Projection.html#Use_Spherical(boolean)"><code>Use_Spherical(boolean)</code></a> is enabled so the faster but
slightly less accurate spherical form of the projection will be used;
otherwise the "_Elliptical" suffix is appended so the elliptical form
will be used. Also, if the name is <a href="../../PIRL/Image_Tools/Projection.html#POLARSTEREOGRAPHIC_PROJECTION_NAME"><code>POLARSTEREOGRAPHIC_PROJECTION_NAME</code></a> it will be converted to the
<a href="../../PIRL/Image_Tools/Projection.html#POLAR_STEREOGRAPHIC_PROJECTION_NAME"><code>POLAR_STEREOGRAPHIC_PROJECTION_NAME</code></a>
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>parameters</code> - The Parameter Aggregate containing the projection
definition parameter values. These parameters will be passed to
the specific projection class to be constructed. If null, not an
Aggregate Parameter, or there is no <a href="../../PIRL/Image_Tools/Projection.html#PROJECTION_PARAMETER_NAME"><code>PROJECTION_PARAMETER_NAME</code></a> parameter a default Projection is
constructed which will have the <a href="../../PIRL/Image_Tools/Projection.html#Is_Identity()"><code>identity
projection flag</code></a> set.</dd>
<dt><span class="strong">Returns:</span></dt><dd>A Projection or Projection subclass, Object.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../PIRL/PVL/PVL_Exception.html" title="class in PIRL.PVL">PVL_Exception</a></code> - If there is a problem reading the parameters
or a parameter is found to have an invalid value.</dd>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/util/NoSuchElementException.html?is-external=true" title="class or interface in java.util">NoSuchElementException</a></code> - If any required parameter was missing
from the provided parameters.</dd>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang">UnsupportedOperationException</a></code> - If the expected Projection
subclass could not be loaded or instantiated.</dd>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code> - If the constructor of the loaded projection class
throws an unexpected exception.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../PIRL/Image_Tools/Equirectangular_Projection.html" title="class in PIRL.Image_Tools"><code>Equirectangular_Projection</code></a>,
<a href="../../PIRL/Image_Tools/Polar_Stereographic_Elliptical_Projection.html" title="class in PIRL.Image_Tools"><code>Polar_Stereographic_Elliptical_Projection</code></a>,
<a href="../../PIRL/Image_Tools/Polar_Stereographic_Spherical_Projection.html" title="class in PIRL.Image_Tools"><code>Polar_Stereographic_Spherical_Projection</code></a></dd></dl>
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<pre>public <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> Name()</pre>
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<pre>public boolean Is_Identity()</pre>
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<pre>public double Resolution()</pre>
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<pre>public double Equitorial_Radius()</pre>
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<pre>public double Polar_Radius()</pre>
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<pre>public double Eccentricity()</pre>
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<pre>public double Sample_Offset()</pre>
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<pre>public double Line_Offset()</pre>
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<pre>public boolean Positive_West()</pre>
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<pre>public <a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a> Positive_West(boolean positive_west)</pre>
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<pre>public boolean Planetocentric()</pre>
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<pre>public <a href="../../PIRL/Image_Tools/Projection.html" title="class in PIRL.Image_Tools">Projection</a> Planetocentric(boolean planetocentric)</pre>
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<pre>public double Center_Latitude()</pre>
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<pre>public double Center_Longitude()</pre>
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<pre>public static boolean Use_Spherical(boolean enabled)</pre>
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<pre>public <a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.Double.html?is-external=true" title="class or interface in java.awt.geom">Point2D.Double</a> to_World(<a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.html?is-external=true" title="class or interface in java.awt.geom">Point2D</a> image_coordinate)</pre>
<div class="block">Get the world longitude,latitude coordinate for an image sample.line
coordinate.
<p>
This method simply returns a copy of the coordinate argument. A
projection specific subclass will override this method.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>image_coordinate</code> - The image sample,line coordinate.</dd>
<dt><span class="strong">Returns:</span></dt><dd>A copy of the image_coordinate.</dd></dl>
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<pre>public <a href="/usr/share/doc/default-jdk-doc/api/java/awt/Point.html?is-external=true" title="class or interface in java.awt">Point</a> to_Image(<a href="/usr/share/doc/default-jdk-doc/api/java/awt/geom/Point2D.html?is-external=true" title="class or interface in java.awt.geom">Point2D</a> world_coordinate)</pre>
<div class="block">Get the image sample,line coordinate for a world longitude,latitude
coordinate.
<p>
This method simply returns a copy of the coordinate argument. A
projection specific subclass will override this method.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>world_coordinate</code> - The world longitude,latitude coordinate.</dd>
<dt><span class="strong">Returns:</span></dt><dd>A copy of the world_coordinate.</dd></dl>
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<pre>public static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> Degrees_Minutes_Seconds(double angle)</pre>
<div class="block">Converts an angle in decimal degrees, to a degrees, minutes, seconds
representation.
<p>
The format of the degrees, minutes, seconds String representation is:
<p><blockquote>
DDDd MMm SS.SSSs
</blockquote>
where DDD is integer degrees, MM is integer minutes in the range 0 to
59, and SS.SSS is seconds with fractional seconds in the range 0.0 to
59.999 For example, 206.291 degrees is represented as "206d 17m
27.600s". <b>N.B.</b>: A fixed field format is used in which leading
spaces and trailing zeros are used to each value occurs at a specific
location in the String representation.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>angle</code> - The angle in degrees to be represented.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The String representation.</dd></dl>
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<pre>public static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> Hours_Minutes_Seconds(double angle)</pre>
<div class="block">Converts an angle in decimal degrees, to an hours, minutes, seconds
representation.
<p>
The format of the hours, minutes, seconds String representation is:
<p><blockquote>
HHh MMm SS.SSSs
</blockquote>
where HH is integer hours in the range 0 to 24, MM is integer minutes
in the range 0 to 59, and SS.SSS is seconds with fractional seconds
in the range 0.0 to 59.999 For example, 206.291 degrees is
represented as "13h 45m 9.840s". <b>N.B.</b>: A fixed field format
is used in which leading spaces and trailing zeros are used to each
value occurs at a specific location in the String representation.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>angle</code> - The angle in degrees to be represented.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The String representation.</dd></dl>
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<h4>Decimal_Degrees</h4>
<pre>public static double Decimal_Degrees(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> parts)
throws <a href="/usr/share/doc/default-jdk-doc/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a>,
<a href="/usr/share/doc/default-jdk-doc/api/java/lang/NumberFormatException.html?is-external=true" title="class or interface in java.lang">NumberFormatException</a></pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code></dd>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/lang/NumberFormatException.html?is-external=true" title="class or interface in java.lang">NumberFormatException</a></code></dd></dl>
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<h4>Planetocentric_to_Planetographic</h4>
<pre>public double Planetocentric_to_Planetographic(double latitude)</pre>
<div class="block">Convert planetocentric latitude to planetographic latitude.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>latitude</code> - The latitude, in radians, to convert.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The converted latitude value.</dd></dl>
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<h4>Planetographic_to_Planetocentric</h4>
<pre>public double Planetographic_to_Planetocentric(double latitude)</pre>
<div class="block">Convert planetographic latitude to planetocentric latitude.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>latitude</code> - The latitude, in radians, to convert.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The converted latitude value.</dd></dl>
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<h4>Projection_X_to_Sample</h4>
<pre>protected double Projection_X_to_Sample(double projection_x)</pre>
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<h4>Projection_Y_to_Line</h4>
<pre>protected double Projection_Y_to_Line(double projection_y)</pre>
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<h4>Sample_to_Projection_X</h4>
<pre>protected double Sample_to_Projection_X(double sample)</pre>
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<h4>Line_to_Projection_Y</h4>
<pre>protected double Line_to_Projection_Y(double line)</pre>
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<h4>Eccentricity</h4>
<pre>public static double Eccentricity(double polar_radius,
double equitorial_radius)</pre>
<div class="block">Calculate the planet eccentricity.
<p><blockquote>
E = sqrt (1 - polar_radius**2 / equitorial_radius**2)
</blockquote>
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>equitorial_radius</code> - The planet equitorial radius.</dd><dd><code>polar_radius</code> - The planet polar radius.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The planet eccentricity.</dd></dl>
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<h4>Local_Radius</h4>
<pre>public double Local_Radius(double latitude)</pre>
<div class="block">Calculate the radius of the planet at some latitude.
<p><blockquote>
R = Re * Rp / sqrt (a**2 + b**2)
</blockquote>
where:
<p><blockquote>
Re = <a href="../../PIRL/Image_Tools/Projection.html#Equitorial_Radius()"><code>Equitorial_Radius</code></a>
Rp = <a href="../../PIRL/Image_Tools/Projection.html#Polar_Radius()"><code>Polar_Radius</code></a>
a = Re * sin (latitude)<br>
b = Rp * cos (latitude)
</blockquote>
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>latitude</code> - The latitude, in radians, at which the local
radius is to be calculated.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The radius of the planet at the specified latitude.</dd></dl>
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<h4>To_360</h4>
<pre>public static double To_360(double longitude)</pre>
<div class="block">Ensure that a longitude value is in the range 0 to 360 degrees.
<p>
A negative longitude value is repeatedly increased by 360 until
it is no longer negative. A longitude value greater than or equal to 360
is repeatedly decreased by 360 until it is less than 360.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>longitude</code> - The longitude value to map to the 0 to 360 degree
domain.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The longitude value in the 0-360 degree domain.</dd></dl>
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<h4>To_180</h4>
<pre>public static double To_180(double longitude)</pre>
<div class="block">Ensure that a longitude value is in the range -180 to 180 degrees.
<p>
A longitude value less than -180 is repeatedly increased by 360 until
it is greater than or equal to -180. A longitude value greater than
or equal to 180 is repeatedly decreased by 360 until it is less than
180.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>longitude</code> - The longitude value to map to the -180 to 180
degree domain.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The longitude value in the -180 to 180 degree domain.</dd></dl>
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<h4>Projection_Class_Name</h4>
<pre>public static <a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> Projection_Class_Name(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> projection_name)</pre>
<div class="block">Produce a class name for a projection name.
<p>
The projection name is first trimmed of leading and trailing
whitespace and all characters are set to lowercase. If the result
starts with "polar" but is not followed by a space (' ') or underbar
('_') character an underbar is inserted following the "polar" prefix.
Then any remaining space characters are changed to '_' characters.
The first character and every character following an underbar
character is set to uppercase. Finally the "_Projection" String is
appended.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>projection_name</code> - The projection name String.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The class name String.</dd></dl>
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<h4>Find_Parameter</h4>
<pre>protected static <a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> Find_Parameter(<a href="../../PIRL/PVL/Parameter.html" title="class in PIRL.PVL">Parameter</a> label,
<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)
throws <a href="/usr/share/doc/default-jdk-doc/api/java/util/NoSuchElementException.html?is-external=true" title="class or interface in java.util">NoSuchElementException</a></pre>
<div class="block">Find a named parameter in PDS label parameters.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>label</code> - The PDS label parameters.</dd><dd><code>name</code> - The name of the parameter to find.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The Parameter that was found.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/util/NoSuchElementException.html?is-external=true" title="class or interface in java.util">NoSuchElementException</a></code> - If the parameter was not found.</dd></dl>
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<h4>main</h4>
<pre>public static void main(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[] args)</pre>
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<h4>Usage</h4>
<pre>public static void Usage()</pre>
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