cell array conversion to numeric

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Femi
Femi 2014-8-2
回答： Image Analyst 2014-8-2
My cell array looks somewhat like this:
a = {'xxx' , 'xxx' , '24' , '63' , 'ggg' , 'ggg'}
Note: the numbers are also formatted as strings.
Is there a one-line operation (without loops) to convert the 'xxx' and 'ggg' to NaN, and the numbers in strings to numeric so that a becomes numeric array?

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回答（1 个）

Image Analyst
Image Analyst 2014-8-2
Use str2double():
a = {'xxx' , 'xxx' , '24' , '63' , 'ggg' , 'ggg'}
out = str2double([a])
whos out
In the command window:
a =
'xxx' 'xxx' '24' '63' 'ggg' 'ggg'
out =
NaN NaN 24 63 NaN NaN
Name Size Bytes Class Attributes
out 1x6 48 double

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