array and logicals; deleting columns

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gmltn1212
gmltn1212 2020-6-22
回答： the cyclist 2020-6-22
Hi I am trying to delete a column of array based on a logical (true, false)
arr = [1 2 3; 4 5 6; 7 8 9];
if the logical is this,
logic = '0 1 0' %this is logical values
I am trying to delete the entire column when its true (logical 1). And the returned value should look like this:
new = [1 3; 4 6; 7 9]
Could you do this by using 'logic'? not arr(:,2)]=[]

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the cyclist
the cyclist 2020-6-22
Here is one way.
arr = [1 2 3;
4 5 6;
7 8 9];
logic = [false true false];
new = arr(:,not(logic))

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