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bmp: supports bitmap files

Name Type Description
hue verb generate color from color set
readbmp verb read bitmap file, returning RGB data
readbmphdr verb read header from bitmap file
viewbmp verb bitmap viewer using isipicture control
viewrgb verb view numeric matrix of RGB data
writebmp verb write bmp file from RGB data

hue

generate color from color set
x. is color set
y. is values from 0 to 1, selecting color

readbmp

read bitmap file, returning RGB data

new version thanks to Andrew Nikitin (J Forum 5 Sep 2002)

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 jsystempath 'system\examples\data\j.bmp'

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 [;minimum bitsize]

picks appropriate bit size of 4 8 or 24, subject
to optional minimum bit size.


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