bmp: supports bitmap files

readbmphdr

read header from bitmap file
returns:  bitsize, rows, columns

viewbmp

bitmap viewer using isipicture control

x. = [parentid [;parentname]]
y. = filename(s)

e.g.  viewbmp 'system\examples\data\j.bmp'

viewmat

view matrix in isipicture control
                  may be non-negative numeric matrix,
                  character or boxed
                 (writes bitmap file, then views it)

y. = mat [;parentid [;parentname]] (as for viewbmp)
x. = optional hue as: 3 column matrix of R-G-B triples
                  or: vector of RGB values
     if mat is boolean, x. defaults to black/white
     otherwise x. defaults to red - purple spectrum

mat may be one of:
   boolean         (black/white)
   other numeric   (color scale from 0 upwards)
   other           (converted to numeric)

e.g. viewmat (?50 50$2);'Random Boolean'

viewrgb

view numeric matrix of RGB data
                 (writes bitmap file, then views it)
x. = [parent]
y. = matrix

writebmp

write bmp file from RGB data

Form:  data writebmp filename

picks appropriate bit size of 4 8 or 24