matrix_histogram::compute_histo_x

Source: stream/matrix/Histogram/matrix_histogram__compute_histo_x.pro

 matrix_histogram::compute_histo_x
        Compute a histogram across a track.

 Usage:
        rv = histref -> compute_histo_x(origin)

 Argument:
        origin  struct  input   A structure as returned by
                                matrix_dataset::locate 

 Keywords:
        direction int   Set a direction for histograms across the
                        track, one of 0, 45, 90 or 135 (degrees).
        length  int     The length of the histogram each way from the
                        origin.
        width   int     The width of the histigram each side of the

 History:
        Original (after 3.15): 9/8/00; SJT