2011/2/7 Toby Murray <[email protected]>:
> Well the jump from 13 to 14 is a pretty big milestone for aerial
> imagery. You go from rough blobs to distinguishable features. So that
> does make sense.
>
> But yeah, all of the US is just going to be solid green with this
> definition. Maybe a red/yellow/green scheme? Red means <z14, yellow
> indicates z14-18 and green is for z19+? Or maybe different colors for
> those colorblind people among us :)


I would use a scale like
#19ff00 Z20+
#99ff00 Z18-19
#ffe500 Z15-17
#ff6600 Z14

or possibly a colour tone for each level.

cheers,
Martin

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