Computer Programs

These are three programs I wrote mostly in the early 1990s to analyze data. By now, there are a number of alternatives available, but to me these programs are still serving a good purpose. I even sometimes make small changes....

The programs on this page are written in good-old Fortran-77 and come as source code under the Apache-2.0 license. If you're looking for some re-usable python code I wrote look in the column on the left.

scatter
Scatter is a program to make X-Y plots. It reads a column-formatted file of data points (one line per data point). It writes its output as an "svg" file that can be handled by programs like InkScape.

Download scatter version 3.1 (16 November 2013), or read its manual

 

balkjes
Balkjes is a program to make histograms. It reads a column-formatted file of data points (one line per data point). It writes its output as an "svg" file.

Download balkjes version 4.1 (16 November 2013), or read its manual

 

contour3d
Contour3D is a program that reads a special file containing an XYZ grid with scalar data, and writes an "OOGL" file with a 3D contour. "OOGL" data can be viewed using the ancient geomview program.

Download contour3d version 3.0.