overlaying contour data of different resolutions

Here is my problem:

I have two arrays of contour data.
array1 is of resolution 1/6 degree.
array2 is of resolution 1/2 degree.

I want to create a contour graph that overlays array1, when data in array1
is not -999.

Step 1, I need to conform array2 to 1/6 degree resolution.
Step 2, I need to overlay only if the data is non fill.

Any thoughts on functions to use or best approaches is appreciated.

Thank you,

-- 
Micah Sklut

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Received on Mon May 7 16:26:37 2012