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How to replace string by double in cell array

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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

Walter Roberson
Walter Roberson on 19 May 2020
Would it be possible for you to upload the file for testing?
Gregory Wurtz
Gregory Wurtz on 19 May 2020
Here is the file with some example columns. The deficient data is in column cc.

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Accepted Answer

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 19 May 2020
D1D=readtable('test.xlsx');
D1D.cc=str2double(D1D.cc);

  2 Comments

Sulaymon Eshkabilov
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 ...

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More Answers (2)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 19 May 2020
use a command: double()
To get back your strings use the command: char()

  1 Comment

Gregory Wurtz
Gregory Wurtz on 19 May 2020
I am not sure how this solves my problem: I would like to replace the string in the cell array with doubles. I included the data in the feed above.
Thanks for your help.

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Walter Roberson
Walter Roberson on 19 May 2020
filename = 'test.xlsx';
opt = detectImportOptions(filename);
opt = setvaropts(opt, 3, 'Type', 'double');
T = readtable(filename, opt);

  5 Comments

Show 2 older comments
Walter Roberson
Walter Roberson on 19 May 2020
the accepted answer is for a table() as well.
Walter Roberson
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

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