I'd also like a good solution to the 256 color limit to elevation displays.
And John, I'm interested in your color scheme (you could almost hand-deliver it
to me! Are you at JJ Pickle or on campus?)
John
John Berry Assocs - Remote Sensing Services
5013 Westview Drive, AUSTIN, TX 78731
Ph: +1-512-452-8068 Fx: +1-512-452-8068
Mo: +1-512-293-8068
e-mail: [EMAIL PROTECTED]
----- Original Message -----
From: j.andrews <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 02, 2001 9:28 AM
Subject: .lut > 256 colors?
> i've a 1k-rez elevation model of the world & an elev.lut file i've
> created to
> display colors.
>
> Problem: my data values range from approx -9000 m to 9000
> m (mariana's trench to everest) for a total of approx 18000 possible
> values. If i'm allowed only 256 colors in the .lut file (i'm not sure
> of
> this, but experimenting w/more colors has failed/crashed ERM), i can
> achieve
> a new color value at a relatively coarse 70m resolution (18000 / 256
> =
> ~70). For the most part, this is fine- but in low, flat areas (i.e.
> northern Europe, East US) i'd like a 15-20 m color interval. Is it
> possible
> to use 1024 or more colors in the .lut file? If not, any
> suggestions?
>
> i'm using ERMapper 5.5 for IRIX; i've access to 6.1 on NT, though
> if possible, i'd like to solve it on the IRIX box.
>
> thanks,
> john
>
> ps- the elev.lut file i created is pretty cool: majenta-dark
> blue-light blue-dark green-yellow-brown-white, much more
> national-geographicky than the provided palette. if interested, i can
> e-mail it to ya.
>
>
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