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<title>IMG2GOOGLE</title>
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<h1 align=center>IMG2GOOGLE</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#EXAMPLES">EXAMPLES</a><br>
<a href="#DATA SETS">DATA SETS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<p style="margin-left:11%; margin-top: 1em">img2google
− Create Google Earth KML overlay tiles from
bathymetry Mercator img grid</p>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<p style="margin-left:11%; margin-top: 1em"><b>img2google
−R</b><i>west</i>/<i>east</i>/<i>south</i>/<i>north</i>[<b>r</b>]
[ <i>imgfile</i> ] [
<b>−A</b><i>mode</i>[<i>altitude</i> ] ] [
<b>−C</b> ] [ <b>−F</b><i>fademin/fademax</i> ]
[ <b>−G</b><i>prefix</i> ] [
<b>−L</b><i>LODmin/LODmax</i> ] [
<b>−N</b><i>layername</i> ] [
<b>−T</b><i>doctitle</i> ] [ <b>−U</b><i>URL</i>
] [ <b>−V</b> ] [ <b>−Z</b> ]</p>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<p style="margin-left:11%; margin-top: 1em"><b>img2google</b>
reads a 1x1 minute Mercator surface relief img file and
creates a Google Earth overlay KML file and associated PNG
tile for the specified region. If no input file is given we
use topo.11.1.img.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−R</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top"><i>west, east,
south,</i> and <i>north</i> specify the Region of interest,
and you may specify them in decimal degrees or in
[+-]dd:mm[:ss.xxx][W|E|S|N] format. Append <b>r</b> if lower
left and upper right map coordinates are given instead of
w/e/s/n. The two shorthands <b>−Rg</b> and
<b>−Rd</b> stand for global domain (0/360 and
-180/+180 in longitude respectively, with -90/+90 in
latitude). Alternatively, specify the name of an existing
grid file and the <b>−R</b> settings (and grid
spacing, if applicable) are copied from the grid.</p></td>
</table>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>
<p style="margin-left:11%; margin-top: 1em"><i>imgfile</i></p>
<p style="margin-left:22%;">An img format
bathymetry/topography file such as those created by Sandwell
and Smith. If this files does not exist in the current
directory and the user has set the environment variable
<b>$GMT_DATADIR</b>, then <b><A HREF="img2mercgrd.html">img2mercgrd</A></b> will try to
find <i>imgfile</i> in <b>$GMT_DATADIR</b>.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−A</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects one of 5
altitude modes recognized by Google Earth that determines
the altitude (in m) of the image: <b>G</b> clamped to the
ground, <b>g</b> append altitude relative to ground,
<b>a</b> append absolute altitude, <b>s</b> append altitude
relative to seafloor, and <b>S</b> clamp it to the seafloor
[Default].</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−C</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Turn on clipping so
that only portions below sea level will be visible in the
image [no clipping].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−F</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Sets the distance
over which the geometry fades, from fully opaque to fully
transparent. These ramp values, expressed in screen pixels,
are applied at the minimum and maximum end of the LOD
(visibility) limits, respectively. [no fading (0/0)].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−G</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Specify the prefix
for the output image file (the extensions are set
automatically). Default uses the naming
topoN|S<i><north></i>E|W<<i>west</i>>.</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−L</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Measurement in
screen pixels that represents the minimum limit of the
visibility range for a given Region Google Earth calculates
the size of the Region when projected onto screen space.
Then it computes the square root of the Region’s area
(if, for example, the Region is square and the viewpoint is
directly above the Region, and the Region is not tilted,
this measurement is equal to the width of the projected
Region). If this measurement falls within the limits defined
by <i>LODmin</i> and <i>LODmax</i> (and if the region is in
view), the Region is active. If this limit is not reached,
the associated geometry is considered to be too far from the
user’s viewpoint to be drawn. <i>LODmax</i> represents
the maximum limit of the visibility range for a given
Region. A value of â1, the default, indicates
"active to infinite size." [always active].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−N</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Append the
layername of the image (use quotes if strings contain
spaces)
[topoN|S<i><north></i>E|W<<i>west</i>>].</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−T</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Append the document
title (use quotes if strings contain spaces)
["Predicted bathymetry"].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−U</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">By default, images
are referenced locally relative to the KML file. Specify an
URL to prepend a server address to the image name reference
[local].</p> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−V</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects verbose
mode, which will send progress reports to stderr [Default
runs "silently"].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−Z</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Uses zip (which
must be installed) to create a *.kmz file for easy
distribution; append <b>+</b> to delete the KML and PNG file
after zipping [No zipping].</p></td>
</table>
<a name="EXAMPLES"></a>
<h2>EXAMPLES</h2>
<p style="margin-left:11%; margin-top: 1em">To create a
10x10 degree Google Earth KML tile for the region
<b>−R</b> 170/180/20/30 using the default
<i>topo.11.1.img</i> and output naming convention, try</p>
<p style="margin-left:11%; margin-top: 1em"><b>img2google
−R</b> 170/180/20/30</p>
<p style="margin-left:11%; margin-top: 1em">To make the
same tile with the previous <i>topo.10.1.img</i>, run in
verbose mode, clip so only oceanic areas are visible, name
the output oldimage, specify the KML metadata directly
(including setting the image altitude to 10 km), and make a
single *.kmz file, try</p>
<p style="margin-left:11%; margin-top: 1em"><b>img2google</b>
<i>topo.10.1.img</i> <b>−R</b> 170/180/20/30
<b>−AA</b>10000 <b>−C
−G</b><i>oldimage</i> <b>−N</b>"My KML
title" <b>−T</b>"My KML title"
<b>−U</b> http://my.server.com/images <b>−V
−Z</b></p>
<a name="DATA SETS"></a>
<h2>DATA SETS</h2>
<p style="margin-left:11%; margin-top: 1em">For
topo.11.1.img and other Sandwell/Smith altimetry-derived
Mercator grids, visit http://topex.ucsd.edu.</p>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<p style="margin-left:11%; margin-top: 1em"><i><A HREF="GMT.html">GMT</A></i>(1),
<i><A HREF="img2grd.html">img2grd</A></i>(1) <i><A HREF="img2mercgrd.html">img2mercgrd</A></i>(1)
<i><A HREF="ps2raster.html">ps2raster</A></i>(1)</p>
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