Export several arrays with the same name to a xls

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lightworks
lightworks 2013-6-24
Hi,
I have a lot of *.mat, each one containing 3 arrays of the same name, that is:
  • file1.mat contains arrays A1, A2 and A3
  • file2.mat contains arrays A1, A2 and A3 ... and so on.
I need to export them to a xls, like this:
  • Sheet 1 containing, side by side, all the arrays named by A1
  • Sheet 2 containing, side by side, all the arrays named by A2
  • Sheet 3 containing, side by side, all the arrays named by A3
I've been trying for hours now and I can't make it work (my problem is the repeated array's name).
I loaded all the files with this (I don't even know if it's the right way):
s = what('./matrices/Tmax/');
matfiles=s.mat;
for i=1:numel(matfiles);
x=load(['./matrices/Tmax/' char(matfiles(i))]);
...
end
I'd really appreciate any help. Thanks in advance!

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Leah
Leah 2013-6-24
This will work up to the Z column in Excel (26 mat files) I don't know how many mat files you have.
mat_files=1:26; %number of mat files
excel_col=double('A'); %starting Excel Column
for m=mat_files
load(['file' num2str(m) '.mat']);
xlswrite('output.xls',A1,'A1',char(excel_col+m-1));
xlswrite('output.xls',A2,'A2',char(excel_col+m-1));
xlswrite('output.xls',A3,'A3',char(excel_col+m-1));
end
  2 个评论
lightworks
lightworks 2013-6-24
编辑：lightworks 2013-6-24
I think I didn't make myself clear.
The name of the *.mat files are not in a number sequence, they are just like: John.mat, Maria.mat, etc. So insted of loading with num2str I had to use the way I said in the first post.
So I tried out your code modified like this:
s = what('./');
matfiles=s.mat;
excel_col=double('A'); %starting Excel Column
for i=1:numel(matfiles);
load(['./' char(matfiles(i))]);
xlswrite('output.xls',A1,'A1',char(excel_col+i*7-1));
xlswrite('output.xls',A2,'A2',char(excel_col+i*7-1));
xlswrite('output.xls',A3,'A3',char(excel_col+i*7-1));
end
Where I also modified that the increment is i*7-1 insted of i-1. I did this because each of my arrays contains 7 columns (I don't know if it's the right thing to do).
But I get this error:
??? Error using ==> xlswrite at 213 Excel returned: Error: Object returned error code: 0x800A03EC.
Error in ==> test at 11 xlswrite('output.xls',A1,'A1',char(excel_col+i*7-1));
What did I messed up?
Thanks a lot for your help!
Leah
Leah 2013-6-24
Your modification is correct and the code works for me. Must be something specific to your data. My dummy data is just a bunch of numbers. Check out this info for possible solutions to that error code.
http://www.mathworks.com/support/solutions/en/data/1-3QJ5I3/

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