how to extract matrix based on a condition?

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MAHMOUD ALZIOUD
MAHMOUD ALZIOUD 2017-11-2
评论： MAHMOUD ALZIOUD 2017-11-3
Hello Everyone, if I have a matrix for example 100 rows by 38 columns, column number 14 has distances, how can i build a for loop with a condition saying: if the distance is between 8 and 12 ft then take the rows corresponding to this condition to construct a new matrix, and put zeros instead of them in the main matrix. i need to do this because i need to stay away from duplicate data when i run another condition. HELP PLEASE

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KSSV
KSSV 2017-11-3
You need not to use a loop, you can use the below lines of code to get what you want.
A = randi(100,38) ; % some random data
distance = A(:,14) ;
%%apply condition to get rows indices satifying the condition
idx = find(distance > 8 & distance < 12)
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MAHMOUD ALZIOUD
MAHMOUD ALZIOUD 2017-11-3
Thank you KSSV for this, now when I take the data by this condition, how can I leave the rows zeros in the original matrix after I take them?

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