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Annotation of researchv10no/cmd/post.src/postmd/README, revision 1.1.1.1

1.1       root        1: 
                      2: A program that displays a matrix as a gray scale image on PostScript
                      3: printers. May be useful if you have a large matrix and want a simple
                      4: way to look for patterns. Expect a 600x600 matrix is an optimistic
                      5: upper limit on a 300 dpi printers using 5 shades of gray and 8.5x11
                      6: inch paper.
                      7: 
                      8: Matrix elements are a series of floating point numbers arranged in
                      9: the input file in row major order. By default each matrix is assumed
                     10: to be square and the number of rows (and columns) is set to the square
                     11: root of the number of elements in the input file. White space, including
                     12: newlines, is not used to determine the matrix dimensions. Each matrix
                     13: element is mapped into an integer in the range 0 to 255 (254 by default)
                     14: and PostScript's image operator maps that integer into a gray scale
                     15: appropriate for the printer.
                     16: 
                     17: The mapping from floating point matrix elements to integers is controlled
                     18: by an interval list and grayscale map. The default interval list is
                     19: "-1,0,1" which partitions the real line into 7 regions. The default
                     20: grayscale map gets darker as the regions move from left to right along
                     21: the real line. The -i option changes the interval list and the -g option
                     22: modifies the grayscale mapping. Check the man page for more details.
                     23: 

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