how to convert matrix column into separate text?

Hi all, I have a 365*45 matrix, which represents one-year data for 45 subbasins. I would like to convert each column of the matrix to a separate text file (45 text file with a year data) and naming the file as subbasin_1, subbasin_2 etc. Any thought would be highly appreciated.

Answer 1

[Rik]

You obviously did not Google/Bing/Yahoo this.

You can use a loop, combined with sprintf to do this.

for n=1:45
    filename=sprintf('subbasin_%d.txt',n);
    fid=fopen(filename);
    %
    %put your writing code here
    %
    fclose(fid);
end

[Hydro]

Hi Rik,

Thanks, that get me going. here is my code with slight modification to yours.

    for n=1:45
        filename=sprintf('Precip_%d.txt',n);
        fid=fopen(filename, 'wt');
        fprintf(fid,'%.1f\n',my_Prec(:,n));
        fclose(fid);
    end

I would like to append these text file with a specific date (same across all the text file) on the top row of each text file i.e.

precip_1.txt

01011986
0.8
0.5
1.2
0.0
...
...
etc

[Walter Roberson]

After the fopen() and before the fprintf(), add another fprintf() that puts in the header you want.

[Hydro]

Excellent. Thank you Walter and Rik.