# Find the some of a row with numbers greater than -1 in matlab

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Aurelius Hardy on 23 Nov 2022
Commented: Image Analyst on 23 Nov 2022
Numbers in row 1 are: 103, 61, 0, 0, 62, -999, -999, 0, 0, 2
I'm using sum(B,2)
but how can I sum all rows greater than or equal to 0
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Aurelius Hardy on 23 Nov 2022
Maybe I'm looking at this wrong. Row 1 includes inches of of snow received each day. Some days didn't have snow recorded so the -999 was placed there. Therefore, that sum shouldn't be included in the sum of row 1. So I want to get the sum of days that had snow >/= 0.

Walter Roberson on 23 Nov 2022
B = [103, 61, 0, 0, 62, -999, -999, 0, 0, 2]
B = 1×10
103 61 0 0 62 -999 -999 0 0 2
sum( max(B, 0), 2)
ans = 228
Image Analyst on 23 Nov 2022

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