Replacing non-integer values

2013 12 6
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更新时间：2013 12 6
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I have an array of all numeric values but it is a mix of integers and non-integers. How could I replace an non-integer with 0, for example? Also, the array is fairly large (about 130k rows).
Thanks in advance!

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回答（2 个）

sixwwwwww
sixwwwwww 2013-12-6
编辑：sixwwwwww 2013-12-6

0 个投票

If 'a' is your array then use the following:
a(arrayfun(@(x) ~isinteger(x), a)) = 0;

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Muneer
Muneer 2013-12-6
"isinteger", there's what I was looking for. Thanks so much.
sixwwwwww
sixwwwwww 2013-12-6
iit works for integer type values only. if you have data in default MATLAB format(double type) then you should use the following:
a(arrayfun(@(x) mod(x, 1) ~= 0, a)) = 0
Because in case of default MATLAB format data it will make all the values 0 because they are not integer
Muneer
Muneer 2013-12-6
The code you posted replaces the entire array with zeros for some reason. I just wanted the numbers that have a decimal place to be replaced with zero. Does matlab classify an non-integer as a non-number or something? ie. 0.5 and 3 are both integers?
sixwwwwww
sixwwwwww 2013-12-6
编辑：sixwwwwww 2013-12-6
use this:
a(arrayfun(@(x) mod(x, 1) ~= 0, a)) = 0
I explained the reason above
sixwwwwww
sixwwwwww 2013-12-6
it could be done both ways but I am learning about arrayfun and cellfun as well so I used it. Since both solutions work well so I posted this one
Muneer
Muneer 2013-12-6
Thanks, it works great!
sixwwwwww
sixwwwwww 2013-12-6
you are welcome

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Muneer
Muneer
2013-12-6

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sixwwwwww
sixwwwwww
2013-12-6

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