[GRASSLIST:62] Re: d.rgb question

[Russell Nelson]

Glynn Clements writes:
 > Using color=gray will map the lowest existing category to black and
 > the highest existing category to white; if the map doesn't use the
 > entire 0-255 range, you will get the wrong result.

Why is this left up to users to set correctly?  Why doesn't importing
an image do this automatically?

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