MATLAB: How to extract number from cell array

cell arrayextract number

I have a cell array that contains only the following text: 'Interval: 0.02 sec'. How can I extract the number 0.02 from the cell, to be used in calculations?

Best Answer

cellfun(@(x) sscanf(x,'Interval: %f'),c,'un',0) % assuming follows the same pattern , turn 0 to 1 if it’s a scalar output.

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MATLAB: How to count the 1X1 cells in a cell array

a=cellfun(@numel,Out)
sum(a==1)

MATLAB: Skill with regexprep

This should get you started:

>> str = '5*0.02 0.02 0.04 0.08 0.15 0.3 0.5 1 2 3 30*5 30*10 30*20 30*40 30*60';
>> fun = @(n,c)repmat(sprintf(' %s',c),1,str2double(n)); % or JOIN rather than SPRINTF.
>> str = regexprep(str,'\s*(\d+)\*(\S+)','${fun($1,$2)}')
str =
 0.02 0.02 0.02 0.02 0.02 0.02 0.04 0.08 0.15 0.3 0.5 1 2 3 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

https://www.mathworks.com/help/matlab/matlab_prog/dynamic-regular-expressions.html

If you use join then you can get rid of the leading \s*.

Best Answer

Related Solutions

MATLAB: How to count the 1X1 cells in a cell array

MATLAB: Skill with regexprep

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