Removing columns in an array with zeros
I have an array starting at zeros and continuing into other numbers I would like to remove columns in an array that start at zero but keep other numbers
example column array below:
x = [0 0 0 0 0 2 4 6 8 0 1 2];
The column array response would look like
x = 2 4 6 8 0 1 2
I am using octave 3.4.2 / matlab
thank
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3 answers
Logical indexing will work fine in this case: i.e.
y = x(:,x(1,:)~=0)
will do the job for you. An internal boolean comparison x(1,:)~=0
returns true for every column whose first element is non-zero. The indexing operation x(:,...)
selects only those columns for which a boolean comparison is returned.
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