POINTS_01_PLOT
Plot Points in the Unit Square

POINTS_01_PLOT is a MATLAB M file which can read an ASCII file defining a set of points in the unit square [0,1] by [0,1]. The program can also automatically save the image in a file. Either EPS (Encapsulated PostScript) or PNG can be used.

Usage:

points_01_plot ( 'file_name' )

plots the points in the [0,1] square from the file 'file_name'.

points_01_eps ( 'file_name' )

plots the points in the [0,1] square from the file 'file_name' and saves an EPS file;

points_01_png ( 'file_name' )

plots the points in the [0,1] square from the file 'file_name' and saves an PNG file;

points_11_png ( 'file_name' )

plots the points in the [-1,1] square from the file 'file_name' and saves an PNG file;

Related Data and Programs:

EPS is the format used for the output graphics files created by POINTS_01_PLOT

NESTED_SEQUENCE_DISPLAY is a MATLAB program which reads a set of sequences, plots them as horizontal lines of data, and connects sequence entries that are equal.

PLOT_POINTS is an executable FORTRAN90 program which can read a file of point coordinates and make a PostScript image of them.

PNG is the format used for the output graphics files created by POINTS_01_PNG

POINTS_DISPLAY_MATLAB is a MATLAB program which can read a file of coordinates of points, and display an image of the points in a MATLAB graphics window.

POINTS_DISPLAY_OPEN_GL is an interactive executable C++ program which can read a file containing 2D point coordinates, and display an image of those points using Open GL.

SPARSE_GRID_DISPLAY is a library of MATLAB routines which can display a sparse grid in 2D or 3D.

TRI_MESH_DISPLAY is a MATLAB program which reads data defining a triangular mesh of a 3D surface and displays it.

XY is a data directory which contains some examples of 2D pointsets.

Tar File:

A GZIP'ed TAR file of the contents of this directory is available. This is only done as a convenience for users who want ALL the files, and don't want to download them individually. This is not a convenience for me, so don't be surprised if the tar file is somewhat out of date.

• points_01_plot_m_src.tar.csh the commands used to create the GZIP'ed TAR file.
• points_01_plot_m_src.tar.gz the GZIP'ed TAR file.

Source Code:

• file_name_ext_swap.m, creates a new file name by changing the extension.
• points_01_plot.m, reads a data file in the [0,1] square, and displays it.
• points_01_eps.m, reads a data file in the [0,1] square, displays it, and creates an EPS plot.
• points_01_png.m, reads a data file in the [0,1] square, displays it, and creates a PNG plot.
• points_11_png.m, reads a data file of points in the [-1,1] square, displays it, and creates a PNG plot.
• s_len_trim.m, returns the length of a string to the last nonblank.
• timestamp.m, prints the current YMDHMS date as a timestamp.

Examples and Tests:

• fred.txt, a sample input file, containing 100 points in the unit square.
• fred.eps, the Encapsulated PostScript image of the points.
• fred.png, the PNG image of the points.

You can go up one level to the MATLAB source codes.