Import and combine multiple XYZ.txt data files into one X, Y and Z column vectors

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scour_man
scour_man 2011-6-6
Hi
I have a large number of txt files with different names, each one has tab seperated values of X Y and Z data in 3 columns. I have been importing each file seperately but there must be a way to import all the files at once into just 3 column vectors? The files themselves are very large. Is it also possible to write the data into one txt file?
Any help on this would be much appreciated.
Thanks

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Arnaud Miege
Arnaud Miege 2011-6-6
I don't think you can import all the files at once, but you can do so in a loop and append the data from each file to what has already been imported by concatenating the arrays. See the MATLAB FAQ for more details.
HTH,
Arnaud
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scour_man
scour_man 2011-6-9
thanks for helping but I still cant get it to work.. this is what I get now...
files=dir('*.txt')
for i=1:length(files)
fid = fopen(files(i));
C{i} = textscan(fid,'%f%f%f','Delimiter','tab','HeaderLines',1);
fclose(fid)
end
files =
15x1 struct array with fields:
name
date
bytes
isdir
datenum
??? Error using ==> textscan
First input can not be empty.
Arnaud Miege
Arnaud Miege 2011-6-9
Check out what's 'files' in your workspace, it's probably a structure (for more details see the documentation for dir). You need to use files(i).name with fopen.

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