MATLAB: How to select rows in an array based on the values in the first column of another array

anotherarraycolumnfromrowselect

Hi suppose I have a column of values like :

Screenshot 2020-01-31 at 12.02.44 AM.png

How do I select rows in another array based on the array above, Example: row 46, 47 ,48, 49 …. except for row 52

Screenshot 2020-01-31 at 12.03.22 AM.png

Best Answer

new_array = second_array(first_array,:)

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MATLAB: How to select rows in an array based on the values in the first row of another array

idx = setdiff(1:size(yourarray,1),yourvector)
out = yourarray(idx,:)

MATLAB: Selecting elements from an array

idx = myArray( end, : ) < 0;
negLastElementCols = myArray( :, idx );
theRest = myArray( :, ~idx );

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