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Color data points by 3rd variable [message #84088] Thu, 25 April 2013 06:28
morganlsilverman is currently offline  morganlsilverman
Messages: 46
Registered: February 2013
Member
Hello,

I'm plotting the latitude and longitude locations of the top 5% of my dataset. I want to color the locations of these data points by corresponding no2 values. I'm having a hard time figuring out how to set up the colorscale and colorbar correctly. I tried something along the lines of

no2temp = no2sorted(0:83) ; only want top 5% of data points (83 values out of 1661)
NO2colors = no2temp
NO2colors(*) = 0
NO2colors = fix(no2temp*255/(max(no2temp)-min(no2temp)))
cgcolors = cgColor(Bindgen(256))
NO2colors = cgcolors[NO2colors]

but it doesn't seem to work quite right. I'd like the range to be [1e16, 4e16]. Looking for any insight. Thanks.

Sincerely,
Morgan

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