MATLAB Answers

export the data of the plot to .txt or .dat file

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I have the following code and I got a plot from the data. I wanted to export the data in the plot to .txt file or a .dat file
clear
[filename, pathname] = uigetfile('*.raw;*.prc', 'Pick raw or processed data file');
N=str2double(filename(5:6));
% load processed file
fid = fopen([pathname filename],'r','b');
A= fread(fid,inf,'*single')';
prcdata=reshape(A,N,[])';
plot((1:size(prcdata,1))./1.16E6, prcdata (:,6))
fclose(fid);
% code
end
I also tried the following
csvwrite(filename,M,'','6')
figure1 = figure;
axes1 = axes('Parent',figure1)
hold(axes1,'all');
plot((1:size(prcdata,1))./1.16E6, prcdata (:,6))
saveas(figure1,'finename.jpg') % here you save the figure
title(strrep(filename,'Time','Amplitude'))

Accepted Answer

Walter Roberson
Walter Roberson on 13 Oct 2015
x = (1:size(prcdata,1))./1.16E6;
y = prcdata;
xy = [x(:), y(:)];
dlmwrite('YourOutputFile.txt', xy, 'delimiter', ',');
  5 Comments
Annonymous User
Annonymous User on 13 Oct 2015
This code worked it took almost an hour to analyse the data and export it.

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More Answers (1)

Image Analyst
Image Analyst on 12 Oct 2015
Well, neither of those two chunks of code does anything at all like writing the array to a text file! Try this:
filename = 'My Output file.txt'; % Whatever
fid = fopen(filename, 'wt');
if fid ~= -1
fprintf('%f\n', prcdata(:,6)); % Write out column 6 of prcdata.
fclose(fid);
else
message = sprintf('Could not open file %s for writing', filename);
uiwait(warndlg(message));
end
  11 Comments
Annonymous User
Annonymous User on 28 Oct 2015
the data I had was around 6GB that too had 5 files each... so took almost 2 days to write the whole thing into a file thank you

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