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Converting cell 2 matrix get an error if the numbers don't have the same number of digits, why?

Asked by Kelly Kyriakou on 16 Jul 2015
Latest activity Commented on by Kelly Kyriakou on 17 Jul 2015
I havea table on gui and fill 2 number 12500 and 12600 and saved as cell. When I convert it to matrix using cell2mat, if the two numbers don't have the same numebr of digits (12500 and 1250 for example) I get this error "Error using cat Dimensions of matrices being concatenated are not consistent.
Error in cell2mat (line 83) m{n} = cat(1,c{:,n});
Error in main3>pushbutton15_Callback (line 235) matbuildcost=cell2mat(buildcost)"
How should I do?
Thank you

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1 Answer

Answer by Stephen Cobeldick on 16 Jul 2015
Edited by Stephen Cobeldick on 16 Jul 2015
 Accepted Answer

Because that cell array actually contains strings, and does not contain numeric values. If the strings are of different lengths then they cannot be concatenated together vertically, thus the error. The easiest solution is to convert the strings to numeric values using str2double. If you want to keep the data in string form, then use char instead.
Lets have a look at an example:
>> X = {'12500';'1250'};
>> cell2mat(X)
Error using cat
Dimensions of matrices being concatenated are not consistent.
Error in cell2mat (line 84)
m{n} = cat(1,c{:,n});
>> str2double(X)
ans =
12500
1250

  3 Comments

Thank you very much, Indeed it works, now the problem is that when I set these data as uitable data I got this error "Values within a cell array must be numeric, logical, or char". All my data are cells.
Please show exactly how you are generating your data, and upload the data in a .mat file.
I have the following table where the user fill it. Columns X,y and Roadid get filled automatically when user press a save button getting data from data cursor tool as it is shown on map. I uplooaded an m. file where there is the code that save data, assign them to variables and set these data visible on the table. However, in order to run it it is needed fig file. Shall I upload it too?

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