MATLAB Answers


cell consisting letters and numbers to matrix double

Asked by Lotte van de Venis on 27 Oct 2017
Latest activity Commented on by Cedric Wannaz
on 29 Oct 2017
I have a matrix containing 840x1 cells. These consist of 3 letters followed by numbers. Is there a way to convert this into 840x1 double?
I have tried str2double, but these returns only NaN. I tried several combinations with num2str, char, celstr, but i can't figure it out.
Thanks in advance!


Please give any meaningful example. What is the wanted result for 'ABC123'? How do you want to convert this to a number?
xlswrite('Name Excelfile.xlsx', [num2cell(Group), num2cell(Trail), mTrail], 1)

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1 Answer

Answer by Cedric Wannaz
on 27 Oct 2017
Edited by Cedric Wannaz
on 27 Oct 2017

>> C = {'ABC8', 'CAD90.87', 'ZED40'} ;
>> C2 = cellfun( @(s)s(4:end), C, 'UniformOutput', false ) ;
>> str2double( C2 )
ans =
8.0000 90.8700 40.0000
EDIT 1: here is a solution that extracts both parts:
>> data = textscan( [C{:}], '%3s%f' ) ;
With that you get
>> data
data =
1×2 cell array
{3×1 cell} {3×1 double}
>> data{1}
ans =
3×1 cell array
>> data{2}
ans =


Show 1 older comment
How do you want the 'ABC' to be encoded into the double that you need to be output?
Please see my updated answer.
Does it solve your problem of splitting alpha codes and numbers or do you still have a problem with that?

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