tab delimited .txt file
2 views (last 30 days)
Show older comments
I'm attempting to load data from excel into matlab, then alter it a bit and then load it into a .txt file. The code is below:
clear all
load data
data=data(:,5:end);
starting=input('Start (yyyy-mm-dd HH:MM):','s');
ending=input('End (yyyy-mm-dd HH:MM):','s');
resolution=input('Measurements taken every (minutes):');
DateTime=datestr(datenum(starting,'yyyy-mm-dd HH:MM'):resolution/(60*24):...
datenum(ending,'yyyy-mm-dd HH:MM'),...
'yyyy-mm-dd HH:MM');
DateTime=cellstr(DateTime);
outfile = '/path/to/file/output.txt';
header = {'DateTime','temp1','temp2','temp3','temp4','temp5','temp6','temp7',...
'temp8','temp9','temp10','temp11','temp12'};
fid = fopen(outfile, 'w');
if fid == -1; error('Cannot open file: %s', outfile); end
fprintf(fid, '%10s\t', header{:});
fprintf(fid, '\n');
for ii = 1:size(data, 1)
fprintf(fid, '%s\t', DateTime{ii});
fprintf(fid, '%10.6g\t', data(ii,:));
fprintf(fid, '\n');
end
fclose(fid)
The only problem with the code is that I am using it in order to input data into a program which requires the data to be inserted as a tab delimited .txt file. I thought that this code would do this but the program will not run. The program will run if I save the data in excel and then save it from there in a tab delimited .txt file. Is there anything in the code which restricts the data from being saved in a tab delimited format? Or am I missing a key part of coding?
cheers
1 Comment
Jan
on 24 Nov 2011
About see "clear all" see: http://www.mathworks.com/matlabcentral/answers/16484-good-programming-practice#answer_22301
Answers (1)
Walter Roberson
on 24 Nov 2011
You are producing an extra tab at the end of each data line; that might be causing problems.
Quick fix:
for ii = 1:size(data, 1)
fprintf(fid, '%s\t', DateTime{ii});
fprintf(fid, '%10.6g\t', data(ii,1:end-1));
fprintf(fid, '%10.6g\n', data(ii,end));
end
See Also
Categories
Find more on JSON Format in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!