Hi, i'm trying to take a 2d array of I32 numbers, sellect a back ground value say 131586, that easy to detect them but the bit i'm having problem with is actaully setting the occurances into Nan so plotting them on a surface graph will leave holes which will better show my data. i've tried the classics like deviding by 0, multiplying by infinity etc... but they all sem to return either +inf or 0. how can i break it?? both parts attached. (data and VI)

ah ha, sometimes fiddling does work. you just simply type 'NaN' into the numerical are, but it has to be done in DBL for some reason.

LabVIEW

Solved!

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oh, cheers, that may become rather useful in a couple of days,

Cheers.

John P.

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