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<html>
<head>
<title>
PS_WRITE - Simple PostScript Plots
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
PS_WRITE <br> Simple PostScript Plots
</h1>
<hr>
<p>
<b>PS_WRITE</b>
is a FORTRAN90 library which
makes PostScript plots.
</p>
<p>
<b>PS_WRITE</b> can create both general
PostScript (PS) files and also the special
<a href = "../../data/eps/eps.html">
Encapsulated PostScript files</a>, which are restricted to
containing a single image.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../f_src/grf_to_eps/grf_to_eps.html">
GRF_TO_EPS</a>,
a FORTRAN90 program which
reads a GRF file describing a graph,
and makes a PostScript image of the graph, using routines from
the <b>PS_WRITE</b> library.
</p>
<p>
<a href = "../../f_src/plot_points/plot_points.html">
PLOT_POINTS</a>,
a FORTRAN90 program which
reads a data file of points, and
makes various plots, using routines from the <b>PS_WRITE</b> library.
</p>
<p>
<a href = "../../f_src/plot_to_ps/plot_to_ps.html">
PLOT_TO_PS</a>,
a FORTRAN90 program which
uses routines from <b>PS_WRITE</b>,
and allows the interactive creation of simple plots.
</p>
<p>
<a href = "../../f_src/vector_plot/vector_plot.html">
VECTOR_PLOT</a>,
a FORTRAN90 program which
uses routines from <b>PS_WRITE</b>,
and creates plots of a vector field.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Henry McGilton, Mary Campione,<br>
PostScript by Example,<br>
Addison-Wesley,<br>
ISBN: 0-201-63228-4
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "ps_write.f90">ps_write.f90</a>, the source code;
</li>
<li>
<a href = "ps_write.sh">ps_write.sh</a>, commands to compile
the source code;
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "ps_write_prb.f90">ps_write_prb.f90</a>, a sample calling
program;
</li>
<li>
<a href = "ps_write_prb.sh">ps_write_prb.sh</a>,
commands to compile, link and run the calling program;
</li>
<li>
<a href = "ps_write_prb_output.txt">ps_write_prb_output.txt</a>, the output file.
</li>
</ul>
</p>
<p>
Sample files you may copy include:
<ul>
<li>
<a href = "ps_write_prb01.ps">ps_write_prb01.ps</a>
</li>
<li>
<a href = "ps_write_prb02.ps">ps_write_prb02.ps</a>
</li>
<li>
<a href = "ps_write_prb03.ps">ps_write_prb03.ps</a>
</li>
<li>
<a href = "ps_write_prb04.ps">ps_write_prb04.ps</a>
</li>
<li>
<a href = "ps_write_prb05.ps">ps_write_prb05.ps</a>
</li>
<li>
<a href = "ps_write_prb06.ps">ps_write_prb06.ps</a>
</li>
<li>
<a href = "ps_write_prb07.ps">ps_write_prb07.ps</a>
</li>
<li>
<a href = "ps_write_prb08.ps">ps_write_prb08.ps</a>
</li>
<li>
<a href = "ps_write_prb09.eps">ps_write_prb09.eps</a>
</li>
<li>
<a href = "ps_write_prb11.eps">ps_write_prb11.eps</a>
</li>
<li>
<a href = "ps_write_prb12.eps">ps_write_prb12.eps</a>
</li>
</ul>
</p>
<p>
PNG versions are available:
<ul>
<li>
<a href = "ps_write_prb01.png">ps_write_prb01.png</a>
</li>
<li>
<a href = "ps_write_prb02.png">ps_write_prb02.png</a>
</li>
<li>
<a href = "ps_write_prb03.png">ps_write_prb03.png</a>
</li>
<li>
<a href = "ps_write_prb04.png">ps_write_prb04.png</a>
</li>
<li>
<a href = "ps_write_prb05.png">ps_write_prb05.png</a>
</li>
<li>
<a href = "ps_write_prb06.png">ps_write_prb06.png</a>
</li>
<li>
<a href = "ps_write_prb07.png">ps_write_prb07.png</a>
</li>
<li>
<a href = "ps_write_prb08.png">ps_write_prb08.png</a>
</li>
<li>
<a href = "ps_write_prb09.png">ps_write_prb09.png</a>
</li>
<li>
<a href = "ps_write_prb11.png">ps_write_prb11.png</a>
</li>
<li>
<a href = "ps_write_prb12.png">ps_write_prb12.png</a>
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>BOX_CLIP_LINE_2D</b> uses a box to clip a line segment in 2D.
</li>
<li>
<b>CH_CAP</b> capitalizes a single character.
</li>
<li>
<b>CIRCLE_POINTS</b> returns N equally spaced points on a circle in 2D.
</li>
<li>
<b>CIRCLE_POINTS_ARC</b> returns N points on a circular arc in 2D.
</li>
<li>
<b>DEGREES_TO_RADIANS</b> converts an angle from degrees to radians.
</li>
<li>
<b>ELLIPSE_POINTS</b> returns N points on an ellipse in 2D.
</li>
<li>
<b>ELLIPSE_POINTS_ARC</b> returns N points on an elliptical arc in 2D.
</li>
<li>
<b>EPS_FILE_HEAD</b> writes header information to an encapsulated PostScript file.
</li>
<li>
<b>EPS_FILE_TAIL</b> writes trailer information to an encapsulated PostScript file.
</li>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>I4_SWAP</b> swaps two I4's.
</li>
<li>
<b>POINT_INSIDE_BOX_2D</b> determines if a point is inside a box in 2D.
</li>
<li>
<b>PS_ARROW</b> draws an arrow from (X1,Y1) to (X2,Y2).
</li>
<li>
<b>PS_CIRCLE</b> draws a circle.
</li>
<li>
<b>PS_CIRCLE_ARC</b> draws a circular arc.
</li>
<li>
<b>PS_CIRCLE_FILL</b> draws a filled circle.
</li>
<li>
<b>PS_CLIP</b> defines a clipping polygon.
</li>
<li>
<b>PS_COLOR_FILL_SET</b> sets the fill color.
</li>
<li>
<b>PS_COLOR_LINE</b> handles the line color.
</li>
<li>
<b>PS_COLOR_LINE_SET</b> sets the line color.
</li>
<li>
<b>PS_COMMENT</b> inserts a comment into the PostScript file.
</li>
<li>
<b>PS_DEFAULT</b> sets the internal settings to their default values
</li>
<li>
<b>PS_FILE_CLOSE</b> closes a PostScript file.
</li>
<li>
<b>PS_FILE_HEAD</b> writes header information to a PostScript file.
</li>
<li>
<b>PS_FILE_OPEN</b> opens a new version of a PostScript file with a given name.
</li>
<li>
<b>PS_FILE_TAIL</b> writes trailer information to a PostScript file.
</li>
<li>
<b>PS_FILL_GRAY</b> sets the gray fill for polygons.
</li>
<li>
<b>PS_FONT_SIZE</b> sets the font size.
</li>
<li>
<b>PS_GRID_CARTESIAN</b> draws a cartesian grid.
</li>
<li>
<b>PS_GRID_POLAR</b> draws a polar grid.
</li>
<li>
<b>PS_GRID_TRIANGULAR</b> draws a simple triangular grid.
</li>
<li>
<b>PS_LABEL</b> prints a label at the current position.
</li>
<li>
<b>PS_LABEL_SLANT</b> prints a slanted label at a given position.
</li>
<li>
<b>PS_LINE</b> draws a line segment from (X1,Y1) to (X2,Y2).
</li>
<li>
<b>PS_LINE_CLOSED</b> adds the graph of a closed line to a PostScript file.
</li>
<li>
<b>PS_LINE_OPEN</b> adds the graph of a line to a PostScript file.
</li>
<li>
<b>PS_LINE_WIDTH</b> sets the line width.
</li>
<li>
<b>PS_LINETO</b> draws a line from the current point to the given point.
</li>
<li>
<b>PS_MARK_CIRCLE</b> marks a point with a small open circle.
</li>
<li>
<b>PS_MARK_CIRCLES</b> marks points with a small open circle.
</li>
<li>
<b>PS_MARK_DISK</b> marks a point with a small filled disk.
</li>
<li>
<b>PS_MARK_DISKS</b> marks points with a small filled disk.
</li>
<li>
<b>PS_MARK_POINT</b> marks a point with a tiny point.
</li>
<li>
<b>PS_MARKER_SIZE</b> sets the marker size.
</li>
<li>
<b>PS_MOVETO</b> "moves to" a new point, which becomes the current point.
</li>
<li>
<b>PS_PAGE_HEAD</b> writes header information on a new page.
</li>
<li>
<b>PS_PAGE_TAIL</b> writes tail information at the end of a page.
</li>
<li>
<b>PS_POLYGON_FILL</b> adds a filled polygon to a PostScript file.
</li>
<li>
<b>PS_LANDSCAPE</b> rotates the page from portrait to landscape.
</li>
<li>
<b>PS_ROTATE</b> rotates the coordinate system by a given angle.
</li>
<li>
<b>PS_SECTOR</b> draws a circular sector.
</li>
<li>
<b>PS_SECTOR_FILL</b> draws a filled circular sector.
</li>
<li>
<b>PS_SETTING_INT</b> sets, gets, or prints integer internal PS_WRITE parameters.
</li>
<li>
<b>PS_SETTING_PRINT</b> prints the internal PS_WRITE parameters.
</li>
<li>
<b>PS_SETTING_REAL</b> sets, gets, or prints real internal PS_WRITE parameters.
</li>
<li>
<b>PS_SQUARE</b> draws a square.
</li>
<li>
<b>PS_SQUARE_FILL</b> draws a filled square.
</li>
<li>
<b>PS_STAR</b> draws an open star of given radius.
</li>
<li>
<b>PS_STAR_CIRCLE</b> draws open circles at the 10 points on a star of given radius.
</li>
<li>
<b>PS_STAR_DISK</b> draws filled disks at the 10 points on a star of given radius.
</li>
<li>
<b>PS_STAR_POINTS</b> returns 10 points on a star of given radius.
</li>
<li>
<b>PS_TRIANGLE</b> draws an open triangle.
</li>
<li>
<b>PS_TRIANGLE_FILL</b> draws a filled triangle.
</li>
<li>
<b>R8_MODP</b> returns the nonnegative remainder of real division.
</li>
<li>
<b>R8_SWAP</b> swaps two real values.
</li>
<li>
<b>S_EQI</b> is a case insensitive comparison of two strings for equality.
</li>
<li>
<b>SECTOR_POINTS</b> returns N equally spaced points on a circle in 2D.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 15 November 2006.
</i>
<!-- John Burkardt -->
</body>
</html>