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How do I adjust the code for the Gaussian Blur posted in the thread:

What raster smoothing/generalization tools are available?

to retain the resolution/gradients in the y direction and blur only in the x direction (rather than over a square area)?

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My answer there applies directly if you simply use neighborhoods that extend only one cell vertically (that is, in the y direction). –  whuber May 30 '13 at 19:24
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