subtracting a number from string
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how i can subtract a number from string ?
for example :
subject1_EO - i want to extract only number one..
1 个评论
KSSV
2019-5-21
how i can subtract a number from string ? how?
回答（2 个）
Star Strider
2019-5-21
One approach:
str = 'subject1_EO';
nrc = regexp(str, '\d+', 'match')
nr = str2double(nrc{:})
producing:
nrc =
1×1 cell array
{'1'}
nr =
1
2 个评论
Stephen23
2019-5-21
+1 a cunning use of a comma-separated list combined with the demand-driven output of nested functions. Explicit indexing is clearer though:
nr = str2double(nrc{1})
Star Strider
2019-5-21
Thank you!
The most efficient solution by far (and simple too!):
>> str = 'subject1_EO';
>> val = sscanf(str,'subject%f')
val = 1
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2019-5-21
2019-5-21
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