Conversion of cell element to double

Hello.

I want to convert a cell element to double array element. I know the command to do this is str2double but the problem is that the cell element has a number along with a letter that I want to omit. I will try to explain it through the following example.

Cell element: '123456789 a'

Double element (by using str2double): NaN

I want to retain just the numeric part of the cell element. So I would want 123456789 as the double element in the above example. Can anyone please help as to how to go about this?

Answer 1

[Azzi Abdelmalek]

a={'123456789 a'   '455'}
b=regexp(a,'\d+','match')
c=cellfun(@(x) str2double(x{1}),b)

[Digvijay Rawat]

Thanks a ton!

[Digvijay Rawat]

Hey I noticed right now that this piece of code works only for integer values, it simply omits decimal places. I tried changing the /d to /g and /f but then it gave an error. Could you please suggest what to do if the values are in decimals?

[John Manalo]

just use cell2mat function

Answer 2

[Jan]

Or:

a = {'123456789 a'   '455'}
c = cellfun(@(x) sscanf(x{1}, '%g', 1))