How to replace string by double in cell array
10 views (last 30 days)
Show older comments
Gregory Wurtz
on 19 May 2020
Commented: Gregory Wurtz
on 20 May 2020
I am importing an Excel file in Matlab using the readtable command. For some reason, one collumn in the dataset does not load as doubles (all number columns are identically formatted in the Excel file as much as I can tell) but as string characters:
prompting the deficient column:
>>T{3,1}{:,14}
ans =1699×1 cell array
I need to replace the strings in T{3,1}{:,14} with doubles.
The following command returns an error:
>> T{3,1}{:,14}=str2double(T{3,1}{:,14})
Conversion to cell from double is not possible.
If is use:
T{3,1}{:,14}=num2cell(str2double(T{3,1}{:,14}))
the content of the column is no longer a double.
Do you have a solution to this (seemingly trivial) problem?
Thanks
2 Comments
Accepted Answer
Sulaymon Eshkabilov
on 19 May 2020
D1D=readtable('test.xlsx');
D1D.cc=str2double(D1D.cc);
2 Comments
Sulaymon Eshkabilov
on 19 May 2020
if you need to remove NaN's, use:
Index=isnan(D1D.cc);
D1D.cc(Index)=0;
% similarly for other columns ...
More Answers (2)
Sulaymon Eshkabilov
on 19 May 2020
use a command: double()
To get back your strings use the command: char()
Walter Roberson
on 19 May 2020
filename = 'test.xlsx';
opt = detectImportOptions(filename);
opt = setvaropts(opt, 3, 'Type', 'double');
T = readtable(filename, opt);
5 Comments
Walter Roberson
on 19 May 2020
I tested on your sample file before posting. This code fixes the readtable so that it loads as numeric in the first place avoiding the cell
See Also
Categories
Find more on Data Import from MATLAB in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!