sg04@harvey.gte.com (Steven Gutfreund) (02/01/91)
I need to create color coded maps by elevation (or better pseudo-elevation). Does anyone have a color map that I can use? What I would like best is something similar to the color maps one finds in GIS packages such as UNIRAS. Which range from deep blue for low values to earth tones to whites for the mountain peaks. I understand that some work has been done a ULowell (Chaim Lefkowitz) on psychological perception of height from color maps. If anyone has a color map built along these lines, I would greatly appreciate it. Basically, I am looking for something better than a standard hue ramp at max saturation. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Yechezkal Shimon Gutfreund sgutfreund@gte.com GTE Laboratories, Waltham MA harvard!bunny!sgutfreund -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
yackob@eeserv.ee.umanitoba.ca (Kerry Yackoboski) (02/02/91)
In article <10491@bunny.GTE.COM> sgutfreund@gte.com writes: >I need to create color coded maps by elevation (or better >pseudo-elevation). Does anyone have a color map that I can use? >Basically, I am looking for something better than >a standard hue ramp at max saturation. >Yechezkal Shimon Gutfreund sgutfreund@gte.com >GTE Laboratories, Waltham MA harvard!bunny!sgutfreund I too am looking for something like this. I would have emailed but my server is temporarily in spasms, and I have a further question - I have seen a few of these color maps that compress most of the color change into the midrange, effectively minimizing the effect of any large peaks or valleys that might be "hogging" all the dynamic color range. I'd like to know what kinds of rules are used for assigning colors in these cases - square laws, logarithmic, or what? I've tried a few texts, but I don't even know what to call this exercise. Any pointers (or source) are appreciated. -- Kerry Yackoboski <yackob@eeserv.ee.umanitoba.ca> The Scanning Tunneling Microscopy Laboratory in the Cellar U of Manitoba, Winnipeg, Canada