MATLAB Answers

Write 10 excel for loop

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Jason
Jason on 4 Mar 2016
Commented: Jason on 4 Mar 2016
Now I have one original.xlsx, I want to write Data in Sheet1 from E1.
xlswrite('Original.xlsx',Data,'Sheet1','E1')
How do I write 10 different Data{#} into Original.xlsx as different excel name, all in Sheet1 from E1.
for i=1:10
xlswrite('Original.xlsx',Data{i},'Sheet1','E1')?

  2 Comments

Walter Roberson
Walter Roberson on 4 Mar 2016
To confirm, you want to produce just one output file, right? Do you want the ten in different sheets, or do you want them to go into E1 then E2 then E3 and so on? Or do you want the first to start at E1 and then the second to be in E but below where-ever the first finished? Or ...?
Jason
Jason on 4 Mar 2016
I want to have 10 different output excel file. e.g., first one save as 'January.xlsx', second on save as 'February.xlsx', ... All go into E1. Thank you in advance.

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Accepted Answer

Walter Roberson
Walter Roberson on 4 Mar 2016
filenames = {'January.xlsx', 'February.xlsx', 'Cheezburger.xlsx', 'Durango95.xlsx', 'EschewObfuscation.xlsx', ....};
for i=1:10
xlswrite(filenames{i}, Data{i}, 'Sheet1','E1');
end

  3 Comments

Jason
Jason on 4 Mar 2016
For those 10 filenames, e.g. 'January.xlsx', before we add Data{i}, it should contain the same information from Original.xlsx. How do we rewrite the code you wrote.
Thank you a lot.
Walter Roberson
Walter Roberson on 4 Mar 2016
I am not sure what you mean; perhaps you mean something like,
filenames = {'January.xlsx', 'February.xlsx', 'Cheezburger.xlsx', 'Durango95.xlsx', 'EschewObfuscation.xlsx', ....};
[~, ~, orig_raw] = xlsread('Original.xlsx', 'Sheet1');
for i=1:10
xlswrite(filenames{i}, orig_raw, 'Sheet1');
xlswrite(filenames{i}, Data{i}, 'Sheet1','E1');
end
However if you were going to do that then I would use
filenames = {'January.xlsx', 'February.xlsx', 'Cheezburger.xlsx', 'Durango95.xlsx', 'EschewObfuscation.xlsx', ....};
[~, ~, orig_raw] = xlsread('Original.xlsx', 'Sheet1');
for i=1:10
outdata = orig_raw;
new_data = Data{i};
outdata(1:length(new_data),5) = new_data;
xlswrite(filenames{i}, outdata, 'Sheet1');
end
Note: if Data{i} a numeric vector then you would use
for i=1:10
outdata = orig_raw;
new_data = num2cell(Data{i});
outdata(1:length(new_data),5) = new_data;
xlswrite(filenames{i}, outdata, 'Sheet1');
end
But if Data{i} is a numeric scalar or string then you would use
for i=1:10
outdata = orig_raw;
new_data = Data{i};
outdata{1,5} = new_data;
xlswrite(filenames{i}, outdata, 'Sheet1');
end
Jason
Jason on 4 Mar 2016
I think you answered my questions. I will check the code after I finished the Friday party. Thank you in advance

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More Answers (1)

Joachim Schlosser
Joachim Schlosser on 4 Mar 2016
You can write the whole cell array at once. See the cell array example in the online help: http://www.mathworks.com/help/releases/R2015b/matlab/ref/xlswrite.html
If you are asking about the for loop because you first are calculating each cell before writing, I'd advise to export to Excel in a separate step after the loop for performance reasons.

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