How to empty part of column?
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Say I have an column array that looks something like this:
A = [1:10]'
A =
1
2
3
4
5
6
7
8
9
10
If I wanted to get rid of 3 to 8, what would be the command?
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Accepted Answer
the cyclist
on 25 Apr 2017
A(A>=3 & A<=8) = [];
1 Comment
the cyclist
on 25 Apr 2017
Note that this will remove elements with values equal to 3-8, not the elements in positions 3-8. (Your example is ambiguous about which of these you want.)
More Answers (1)
the cyclist
on 25 Apr 2017
A(3:8) = [];
4 Comments
Walter Roberson
on 25 Apr 2017
196:2:-296 is the empty vector. When you use a positive increment (or use the default increment of 1) then if the last value is less than the first value, the result will be empty.
If you were to code
I(196:-2:-296) = [ ]
then 196:-2:-296 would not be empty, but you cannot use negative values as subscripts.
You probably want
I(I <= 196 & I >= -296) = [];
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