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colouring land




Hi,

I have just managed to shade a map of the globe showing SST's, however, as 
the input data has assigned land the value of -100, the key which comes 
with the plot is very skewed. All land is purple which ferret recognises 
to be at a temperature of -100, while the ocean temperature values are 
obviously much higher.

I just want to know how land could be set as one colour by default,  
so that it doesn't appear on the key,(and presumably the key would then 
alter itself to a higher resolution?)

I have checked out the FAQ on the web but I don't understand any of the 
solutions.

Thanks,
Sinead


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