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I need to take characters out of a string using isnan and str2double.

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Rafael Perales
Rafael Perales 2016-10-26
评论： Thorsten 2016-10-26
Basically I need to take out the numeric values out of a string using these functions. I keep trying but some of the characters still come out as numbers.
This is an example
a='281-890-8905';
o=length(a);
for k=1:o
x=isnan(a(k));
if x==0
y=str2double(a(k));
end
end

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采纳的回答

Thorsten
Thorsten 2016-10-26
cellfun(@(x) sscanf(x, '%f'), regexp(a, '(\d+)', 'match'))
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Rafael Perales
Rafael Perales 2016-10-26
This worked I just took out the plus sign to make it a single vector.Thank you

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更多回答（1 个）

Jan
Jan 2016-10-26
编辑：Jan 2016-10-26
Faster and simpler:
a = '281-890-8905';
s = a(a >= '0' & a <= '9') - '0';
Or:
s = a(isstrprop(a, 'digit')) - '0';

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