PLOT_POINTS, a FORTRAN90 code which reads data in the XY file format and creates an Encapsulated PostScript file.
In fact, PLOT_POINTS can read data in the more general TABLE file format, allowing the user to select the two coordinates that will play the role of X and Y.
Plots you can make include:
You can specify the input file, add one box or circle, specify the kind of plot to be made, and a few other options, by entering commands interactively. The set of commands can be gotten via the "HELP" command. The full list is:
| command | Meaning |
|---|---|
| BALLOON | a "balloon" plot of points. |
| DASH | dash plot of connected points. |
| DOT | dot plot of points. |
| DEL | Delaunay triangulation plot |
| KM | K-Means plot. |
| TH | thin the points. |
| TV | triangulated Voronoi diagram. |
| VOR | Voronoi diagram plot. |
| Q | quit. |
| READ filename | read another input file. |
| OUTPUT filename | name the next output file. |
| BOX x1 y1 x2 y2 | draw a single box in the plot. |
| NOBOX | do not draw a box in the plot. |
| CIRCLE x y r | draw a single circle in the plot. |
| NOCIRCLE | do not draw a circle in the plot. |
| MARKER_SIZE = n | Specify marker size. |
| SHADOW | mark X and Y axes for each point. |
| TITLE | enter a title for the next plot. |
| X = n | specify data index to use as X. |
| Y = n | specify data index to use as Y. |
| # comment | make a comment. |
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
PLOT_POINTS is available in a FORTRAN90 version
BOX_PLOT, a MATLAB program which can color in specified entries of a checkerboard, corresponding to pairs of integer data.
PS_WRITE, a FORTRAN90 library which is used by PLOT_POINTS.
XY_DISPLAY, a MATLAB program which can read a file of coordinates of points, and display an image of the points in a MATLAB graphics window.
XY_DISPLAY_OPENGL, a C++ program which can read a file containing 2D point coordinates, and display an image of those points using Open GL.