I need a code to count how many raw in my matrix above zero?
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Abdullah Alsuhaymi
el 17 de Nov. de 2019
Comentada: Abdullah Alsuhaymi
el 17 de Nov. de 2019
I have matrix and I need a code to count how many row contain negative integer
B =
1 -1
2 -2
3 3
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Image Analyst
el 17 de Nov. de 2019
Try using sum() and any():
B =[
1 -1
2 -2
3 3]
numberOfNegativeRows = sum(any(B < 0, 2))
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Erivelton Gualter
el 17 de Nov. de 2019
You might use the function find (https://www.mathworks.com/help/matlab/ref/find.html).
Check the following code:
B = [1,-1; 2,-2; 3,3];
length(find(B<0))
2 comentarios
Image Analyst
el 17 de Nov. de 2019
This counts the total number of negative numbers, not the number of rows. You might think what could happen if there are two negative numbers in one or more of the rows (answer in my Answer).
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