Problem 42858. Block average ignoring NaN values

Created by Peng Liu

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Given a matrix, calculate the block average of each disjoint sub-matrix while ignoring NaN values. Assume that the size of the matrix along each dimension is an integer multiple of the size of the sub-matrix along the same dimension.

Input: matrix A and the size of each sub-matrix subsz
Output: B = blknanavg(A,subsz)

Example:

    A = [1 2 3 4 5 6 7 8 NaN];
    subsz = [1  3];
    B = [2  5  (7+8)/2];

Hint: this is related to Problem 42856. Block average.

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Last solution submitted on Sep 19, 2019

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Steve on 22 May 2016

Thanks for the fun problem!

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Solution 893307

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Steve on 22 May 2016

So compact! I didn't know about arrayfun and cellfun. Very useful functions.

Solution 893288

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1 Comment

Steve on 22 May 2016

Took a couple of tries, but I got it! :)

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Problem 42858. Block average ignoring NaN values

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Problem 42858. Block average ignoring NaN values

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