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<title>PSIMAGE</title>
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<h1 align="center">PSIMAGE</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="#SEE ALSO">SEE ALSO</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">psimage −
To plot images (EPS files or Sun raster files) on maps</p>
<h2>SYNOPSIS
<a name="SYNOPSIS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>psimage</b>
<i>imagefile</i> [
<b>−W</b>[<b>-</b>]<i>width</i>[/<i>height</i>] |
<b>−E</b><i>dpi</i> ] [
<b>−C</b><i>xpos</i>/<i>ypos</i>[/<i>justify</i>] ] [
<b>−F</b><i>pen</i> ] [
<b>−G</b>[<b>b</b>|<b>f</b>|<b>t</b>]<i>color</i> ] [
<b>−I</b> ] [ <b>−K</b> ] [ <b>−M</b> ] [
<b>−N</b><i>nx</i>[/<i>ny</i>] ] [ <b>−O</b> ] [
<b>−P</b> ] [
<b>−U</b>[<i>just</i>/<i>dx</i>/<i>dy</i>/][<b>c</b>|<i>label</i>]
] [ <b>−V</b> ] [
<b>−X</b>[<b>a</b>|<b>c</b>|<b>r</b>][<i>x-shift</i>[<b>u</b>]]
] [
<b>−Y</b>[<b>a</b>|<b>c</b>|<b>r</b>][<i>y-shift</i>[<b>u</b>]]
] [ <b>−c</b><i>copies</i> ]</p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>psimage</b>
reads an Encapsulated <i>PostScript</i> file or a 1, 8, 24,
or 32-bit Sun raster file and plots it on a map. The image
can be scaled arbitrarily, and 1-bit raster images can be
(1) inverted, i.e., black pixels (on) becomes white (off)
and vice versa, or (2) colorized, by assigning different
foreground and background colors, and (3) made transparent
where one of back- or foreground is painted only. As an
option, the user may choose to convert colored raster images
to grayscale using TV’s YIQ-transformation. In case of
8-, 24- or 32-bit Sun raster files, the user can select
which color to be made transparent. The user may also choose
to replicate the image which, when preceded by appropriate
clip paths, may allow larger custom-designed fill patterns
to be implemented (the <b>−Gp</b> mechanism offered in
most <b><A HREF="GMT.html">GMT</A></b> programs is limited to rasters smaller than
146 by 146). <i><br>
imagefile</i></p>
<p style="margin-left:22%;">This must be an Encapsulated
<i>PostScript</i> (EPS) file or a Sun raster file. An EPS
file must contain an appropriate BoundingBox. A raster file
can have a depth of 1, 8, 24, or 32 bits. Old-style,
Standard, Run-length-encoded, and RGB Sun raster files are
supported. Other raster formats can be converted to Sun
format via a variety of public-domain software (e.g.,
convert, xv).</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><b>−E</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Sets the dpi of the image in dots per inch, or use
<b>−W</b>.</p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−W</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Sets the width (and height) of the image in plot
coordinates (inches, cm, etc.). If <i>height</i> is not
given, the original aspect ratio of the image is maintained.
If <i>width</i> is negative we use the absolute value and
interpolate image to the device resolution using the
<i>PostScript</i> image operator. Alternatively, use
<b>−E</b>.</p> </td></tr>
</table>
<h2>OPTIONS
<a name="OPTIONS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">No space
between the option flag and the associated arguments.</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="7%">
<p style="margin-top: 1em"><b>−C</b></p></td>
<td width="4%"></td>
<td width="78%">
<p style="margin-top: 1em">Sets position of the image in
plot coordinates (inches, cm, etc.) from the current origin
of the plot. By default, this defines the position of the
lower left corner of the image, but this can be changed by
specifying justification [0/0/BL].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−F</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Draws a rectangular frame around the image with the
given pen [no frame]. (See SPECIFYING PENS below).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−K</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>More <i>PostScript</i> code will be appended later
[Default terminates the plot system].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−M</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Convert color image to monochrome grayshades using the
(television) YIQ-transformation.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−N</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Replicate the image <i>nx</i> times horizontally and
<i>ny</i> times vertically. If <i>ny</i> is omitted, it will
be identical to <i>nx</i> [Default is 1/1].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−O</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Selects Overlay plot mode [Default initializes a new
plot system].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−P</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Selects Portrait plotting mode [Default is Landscape,
see <b><A HREF="gmtdefaults.html">gmtdefaults</A></b> to change this].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−U</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Draw Unix System time stamp on plot. By adding
<i>just/dx/dy/</i>, the user may specify the justification
of the stamp and where the stamp should fall on the page
relative to lower left corner of the plot. For example,
BL/0/0 will align the lower left corner of the time stamp
with the lower left corner of the plot. Optionally, append a
<i>label</i>, or <b>c</b> (which will plot the command
string.). The <b><A HREF="GMT.html">GMT</A></b> parameters <b><A HREF="gmtdefaults.html#UNIX_TIME">UNIX_TIME</A></b>,
<b><A HREF="gmtdefaults.html#UNIX_TIME_POS">UNIX_TIME_POS</A></b>, and <b><A HREF="gmtdefaults.html#UNIX_TIME_FORMAT">UNIX_TIME_FORMAT</A></b> can affect
the appearance; see the <b><A HREF="gmtdefaults.html">gmtdefaults</A></b> man page for
details. The time string will be in the locale set by the
environment variable <b>TZ</b> (generally local time).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−V</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Selects verbose mode, which will send progress reports
to stderr [Default runs "silently"].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−X −Y</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Shift plot origin relative to the current origin by
(<i>x-shift,y-shift</i>) and optionally append the length
unit (<b>c</b>, <b>i</b>, <b>m</b>, <b>p</b>). You can
prepend <b>a</b> to shift the origin back to the original
position after plotting, or prepend <b>r</b> [Default] to
reset the current origin to the new location. If
<b>−O</b> is used then the default
(<i>x-shift,y-shift</i>) is (0,0), otherwise it is (r1i,
r1i) or (r2.5c, r2.5c). Alternatively, give <b>c</b> to
align the center coordinate (x or y) of the plot with the
center of the page based on current page size.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">
<p><b>−c</b></p></td>
<td width="4%"></td>
<td width="78%">
<p>Specifies the number of plot copies. [Default is 1].</p></td></tr>
</table>
<p style="margin-left:11%; margin-top: 1em">These options
are for 1-bit Sun raster images only. They have no effect
when plotting other images or PostScript files.</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="4%">
<p style="margin-top: 1em"><b>−Gb</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em">Sets background color (replace
white pixel) of 1-bit images. Use - for transparency (and
set <b>−Gf</b> to the desired color). (See SPECIFYING
COLOR below).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−Gf</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Sets foreground color (replace black pixel) of 1-bit
images. Use - for transparency (and set <b>−Gb</b> to
the desired color). (See SPECIFYING COLOR below).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−I</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Invert 1-bit image before plotting. This is what is done
when you use <b>−GP</b> in other GMT programs.</p></td></tr>
</table>
<p style="margin-left:11%; margin-top: 1em">These options
are for 8-, 24-, and 32-bit Sun raster images only. They
have no effect when plotting 1-bit images or PostScript
files.</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="4%">
<p style="margin-top: 1em"><b>−Gt</b></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em">Assigns the color that is to be
made transparent. Sun Raster files do not support
transparency, so indicate here which color to be made
transparent. (See SPECIFYING COLOR below).</p></td></tr>
</table>
<p style="margin-left:11%; margin-top: 1em"><b>SPECIFYING
PENS</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="4%">
<p style="margin-top: 1em"><i>pen</i></p></td>
<td width="7%"></td>
<td width="78%">
<p style="margin-top: 1em">The attributes of lines and
symbol outlines as defined by <i>pen</i> is a comma
delimetered list of <i>width</i>, <i>color</i> and
<i>texture</i>, each of which is optional. <i>width</i> can
be indicated as a measure (points, centimeters, inches) or
as <b>faint</b>, <b>thin</b>[<b>ner</b>|<b>nest</b>],
<b>thick</b>[<b>er</b>|<b>est</b>],
<b>fat</b>[<b>ter</b>|<b>test</b>], or <b>obese</b>.
<i>color</i> specifies a gray shade or color (see SPECIFYING
COLOR below). <i>texture</i> is a combination of dashes
‘-’ and dots ‘.’.</p></td></tr>
</table>
<p style="margin-left:11%; margin-top: 1em"><b>SPECIFYING
COLOR</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="7%">
<p style="margin-top: 1em"><i>color</i></p></td>
<td width="4%"></td>
<td width="78%">
<p style="margin-top: 1em">The <i>color</i> of lines, areas
and patterns can be specified by a valid color name; by a
gray shade (in the range 0−255); by a decimal color
code (r/g/b, each in range 0−255; h-s-v, ranges
0−360, 0−1, 0−1; or c/m/y/k, each in range
0−1); or by a hexadecimal color code (#rrggbb, as used
in HTML). See the <b><A HREF="gmtcolors.html">gmtcolors</A></b> manpage for more
information and a full list of color names.</p></td></tr>
</table>
<h2>EXAMPLES
<a name="EXAMPLES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">To plot the
image contained in the 8-bit raster file scanned_face.ras,
scaling it to 8 by 10 cm (thereby possibly changing the
aspect ratio), and making the white color transparent,
use</p>
<p style="margin-left:11%; margin-top: 1em"><b>psimage</b>
scanned_face.ras <b>−W</b> 8<b>c</b>/10<b>c</b>
-Gtwhite > image.ps</p>
<p style="margin-left:11%; margin-top: 1em">To include an
Encapsulated <i>PostScript</i> file tiger.eps with its upper
right corner 2 inch to the right and 1 inch up from the
current location, and have its width scaled to 3 inches,
while keeping the aspect ratio, use</p>
<p style="margin-left:11%; margin-top: 1em"><b>psimage</b>
tiger.eps <b>−C</b> 2<b>i</b>/1<b>i</b>/TR
<b>−W</b> 3<b>i</b> > image.ps</p>
<p style="margin-left:11%; margin-top: 1em">To replicate
the 1-bit raster image template 1_bit.ras, colorize it
(brown background and red foreground), and setting each of 5
by 5 tiles to be 1 cm wide, use</p>
<p style="margin-left:11%; margin-top: 1em"><b>psimage</b>
1_bit.ras <b>−Gb</b> brown <b>−Gf</b> red
<b>−N</b> 5 <b>−W</b> 1<b>c</b> >
image.ps</p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><i><A HREF="GMT.html">GMT</A></i>(1),
<i><A HREF="gmtcolors.html">gmtcolors</A></i>(5), <i><A HREF="psxy.html">psxy</A></i>(1)</p>
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