generating files using loop or other functions
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I have the attached data and I want to create an excel sheet with name Test1 that includes the 1st column with the 2nd column, then to create another files with name Test2 that includes the 1st column with the 3rd column and so on assuming I have many columns. Thanks in advance.
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To future readers: the accepted answer uses inefficient, complex code to access the table variables.
Do NOT follow this bad code example!
My comment below the answer shows the simpler, neater, less buggy, easier to debug, and much more efficient approach (i.e. the one given in the MATLAB documentation). Do NOT learn bad ways of writing MATLAB code.
Sudhakar Shinde
2020-10-27
@Stephen, Thanks for your comment.
采纳的回答
Sudhakar Shinde
2020-10-27
Use readtable and writetable functions.
Data=readtable('x1)Data.xlsx'); % Read excel data
[R,C]=size(Data); % get number of columns
VariableNames = Data.Properties.VariableNames; % Name of each column heading
for i=2:C
Out.Nu = eval(['Data.',VariableNames{1}]); % 1st column
Out.Var = eval(['Data.',VariableNames{i}]) ;
Table = table(Out.Nu,Out.Var);
writetable(Table,['Test' num2str(i-1),'.xlsx']); %%write into excel exmaple: Test1.xlsx
end
5 个评论
Abdulkarim Almukdad
2020-10-27
Do NOT use eval to access table variables (or fieldnames, etc.) !
The correct approach is to use the syntax shown in the MATLAB documentation:
Data.(VariableNames{1})
Tip: if you are using eval for basic things like accessing data, then you are doing something wrong.
Sudhakar Shinde
2020-10-27
编辑：Sudhakar Shinde
2020-10-27
@Stephen, Thanks for your comment. 'Data.(VariableNames{1})' is more efficient way.
@Abdulkarim, Please use easy way/syntax to access table data as:
Out.Nu = Data.(VariableNames{1});
Out.Var = Data.(VariableNames{i}) ;
instead of
Out.Nu = eval(['Data.',VariableNames{1}]); % 1st column
Out.Var = eval(['Data.',VariableNames{i}]) ;
Abdulkarim Almukdad
2020-10-27
Sudhakar Shinde
2020-10-27
Welcome.
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