Plotted and Point-Counted Stereograms by Computer X-Y Plotter or Microfilm Devices

摘要

A procedure has been developed to plot orientation data making use of the incremental plotter and microfilm devices found on many computer systems. The program has been written to plot data on an equal area projection, to count the plotted points, and to plot the point counts on an equal area projection for contouring. Plotting can be done on either an incremental plotter or on a microfilm device. The advantage of these devices is in the production of complete Stereograms with accurately plotted data points. The program is executed in the form of one main program which calls several subroutines. The main program reads in the data and selects the output device to be used. The data are assigned coordinates on the stereogram and point counted by subsequent calls from the main program to the several subroutines.