convert char to double

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lovedive0142
lovedive0142 2022-9-27
编辑： Stephen23 2022-9-27
var = '0' (this is char)
and i want this value convert 'double'
so i used
out = str2double(regexp(var,'\d*','match')
But I have a parse error
How can I get the val value in double?
For reference, if str2double is used, the NAN value is obtained.
  1 个评论
Stephen23
Stephen23 2022-9-27
编辑：Stephen23 2022-9-27
Ran in:
var = '0'; % v missing parenthesis
out = str2double(regexp(var,'\d*','match'))
out = 0
out = str2double(var)
out = 0

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回答（1 个）

Davide Masiello
Davide Masiello 2022-9-27
编辑：Davide Masiello 2022-9-27
Ran in:
var = '0';
out = str2double(var)
out = 0
whos out
Name Size Bytes Class Attributes out 1x1 8 double
No need to use regular expressions at all, at least in Matlab.
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Davide Masiello
Davide Masiello 2022-9-27
What you see in my answer is obtained running Matlab R2022b.
What version do you use?
lovedive0142
lovedive0142 2022-9-27
i'm using Matlab R2022b too..
Actually, I'm getting this data from another place, but isn't the char value correct if it pops up like this?......

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