MATLAB: Reading a .dat file with textread

imageimage analysisread datatext filetextscan

How do you read .dat file that contains 5 .jpg images in it using textread?

Also, how do you output the filenames?

Best Answer

jpg images are binary images, but textread() is for reading text files.

Does the .dat file perhaps contain the names of the images rather than the images themselves?

There is no standard format for .dat files: it is a suffix used by any program to hold any data. You need to know the internal structure of that particular .dat file in order to work with it. It might be pure text (most .dat files are not).

If you can upload a sample of the file, someone might have a look at it. http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

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MATLAB: Concatenate data using fgets

You are closing the file in the loop. close the file after the loop. I assume the below should work.

function read_datapattern(filename)
fid = fopen(filename,'rt');
if fid < 0
  error('error opening file %s\n\n',filename);
end
pattern = fgets(fid);
for n = 1:32767
  nextline = fgets(fid);
  pattern = strcat(pattern, nextline);
fprintf(pattern);
fprintf('\n');
end
fclose(fid);

MATLAB: Hi, How to remove white spaces from A=[1 0 0 0 1] binary data & how to copy the binary data in A to a text file?. Thanks in advance.

fid = fopen('A.txt', 'wt');
fprintf(fid, '%d', A);
fprintf(fid, '\n');
fclose(fid);

Or:

fid = fopen('A.txt', 'wt');
fprintf(fid, '%s\n', char(A+'0'));
fclose(fid);

Best Answer

Related Solutions

MATLAB: Concatenate data using fgets

MATLAB: Hi, How to remove white spaces from A=[1 0 0 0 1] binary data & how to copy the binary data in A to a text file?. Thanks in advance.

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