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Topic: load column in from text file
Replies: 12   Last Post: Dec 11, 2012 3:47 PM

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Posts: 8
Registered: 12/15/10
Re: load column in from text file
Posted: Dec 8, 2012 12:12 PM
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> d = dir('path\*.txt'); % the result of dir() is _not_ a fname but a
> directory structure; make the name more representative
> % preallocate your final result--I'm assuming B is no more than a vector
> here--if it's another array a cell array may be more suitable...
> BigAns=zeros(length(d),length(B));
> for k = 1:length(d)
> x=importdata(d(k).name); % pull the data into an array
> B = your_computation(x);
> BigAns(k) = B; % you can, of course, dispense w the intermediary
> end
> save results.txt BigAns -ASCII
> % the above assumes you're saving across the files instead of a single
> file for each of the input files. As you wrote it, you have overwritten
> the results and end up w/ only the last case after all that effort.
> --

I have just the same code as you, but MATLAB gives sometimes error with files which work fine if I load them in one by one :s
If my ascii-file is named 1_01.txt everything works fine, but if I use 2_01.txt it gives a fellowing error;

Error using importdata (line 137)
Unable to open file.

Error in ScienceWeek (line 11)
log = importdata(fnames(k).name);

Do you have a clue what is going wrong?

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