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