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masking float/interger arrays in IDL [message #94427]

Thu, 18 May 2017 21:39

priyamalik484
Messages: 7
Registered: December 2016

Junior Member

Dear All,

I want to know what is the masked value for float or integer in IDL?

For eg. just to explain with very simple code:

A=[-0.9,0.0,1.0,2.0,3.0,-0.7]
B=[-0.6,2.1,2.3,3.4,0.0,4.1]
C=[0.0,0.0,-0.7,1.7,1.2,0.0]

I have three arrays with same dimension. I want to do addition of these arrays.
However I don't want to include those indices in addition where the value is 0.0 or
its negative.
With "where" command I can get indices but I can not remove them, as then array will become of different dimensions, then I will not be able to do addition.

Any help?? Actually this concept I will further use in Image processing!!!!

PS: It is very easy in python. If you assign a value 9999 to any integer code will consider it as a masked number and will not use it in addition and array dimension will remain intact.

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[Message index]

		masking float/interger arrays in IDL By: priyamalik484 on Thu, 18 May 2017 21:39
		Re: masking float/interger arrays in IDL By: Markus Schmassmann on Fri, 19 May 2017 02:48

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