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Filled Areas

Connected to the bitmap capability, GREG can also produce filled curves, histograms or pie charts. The option /FILL of commands CONNECT HISTOGRAM and ELLIPSE are used for hat.

So far, no filling pattern is available.

Contours can also be filled automatically, using command RGMAP /GREY. The RGMAP /GREY command does not use the current pen, but scans pencil colours from 8 to 24, changing the pencil colour by 1 for each new contour. Colours can later be edited using the look-up table facilities provided by GREG (see below).

Finally, the polygon defined by command POLYGON can be filled using the POLYGON/FILL Colour command, where Colour is a pen color (0 through 23).


next up previous contents index
Next: Bitmap Color Editing Up: Greyscale and Color plots Previous: Bitmap display of images   Contents   Index
Gildas manager 2020-07-05