Assigning a value to 0's

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Ferd 2012-4-4

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https://ww2.mathworks.cn/matlabcentral/answers/34507-assigning-a-value-to-0-s

Hey

I have a ColumnA(108x1), this column has values when B(say) is ON. But non-zeros are present for only 104rows, 4rows are still zeros(the lousy data).

What I am trying to do is replace these 0's to a large value or NaN so that it doesn't affect my code later down. However, now Column A exists for Test 1, when B is ON. Also, I get a new ColumnA for Test 2 when B is OFF, where all rows are 0.

I was thinking of doing a cursory check for 0's at the beginning 5-10 rows and create a NewColumnA if the conditioned is satisfied. But wasn't sure how to complete it.

So, something like an "iszero" function for rows 1 to 10 should do it for a NewColumnA. Would "find", to find the number of 0's, do it?

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Image Analyst 2012-4-4

So A is nonzero for B = ON or B = OFF, and A = 0 for B = lousy data. What are the ranges of B for the 3 cases: (1) ON, (2) OFF, and (3) lousy data?

Ferd 2012-4-4

I have A, that has non-zero values when B=ON, but in the same test, when B=ON, I have some values of A as 0(bad data, measurement limitation). I have to filter out these bad data zeros. For B=OFF, A has all zeros.

For example,

B=1, A=[1,2,3,4,5,6,7,0,0,0](say), those 3 zeros have to filtered, keeping the same length.

B=0, A=[0,0,0,0,0,0,0,0,0,0], currenty using the entire array A for plots.

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