Question

I would like to produce a text file which includes a mixture of strings and numbers. The example is as follows:

clear all
fakeData = @(location) struct('Location',location,'AirT',rand(320,1),'SolRad',rand(320,1),'Rain',rand(320,1));
  s(1) = fakeData('England');
  s(2) = fakeData('Wales');
  s(3) = fakeData('Scotland');
  s(4) = fakeData('Ireland');
FieldName = {s.Location};
R = corrcoef([s.AirT],'rows','pairwise');
R_Values = [FieldName(nchoosek(1:size(R,1),2)) num2cell(nonzeros(tril(R,-1)))];
MeanCorr = mean(cell2mat(R_Values(:,3)));
Headings = {'L1','L2','Correlation'};
R_Values1 = [Headings;R_Values];
R_Values1 = [R_Values1; {'','Mean',MeanCorr}];

In order to print R_Values I would simply type:

 for i=11:length(R_Values);
fprintf(1,'%12s\t%12s\t%9.6f\n',R_Values{i,1},R_Values{i,2},R_Values{i,3})
  end

However, when trying to do this for R_Values1 I fail, Im not sure how to allow for the different format in the first and last line of R_Values1.

Answer 1

Since the heading row has a different format than the data rows, I see two options.

1. print the heading row with a separate fprintf statement or;
2. use xlswrite to write the cell array R_Values1 to a file. According to the MATLAB documentation ‘xlswrite’ will create a CSV file if Excel is not available otherwise it will create Excel file which might not work for you.

Maybe others might have different suggestions for handling the header row.