Finding important data in txt file

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Carolyn 2018-2-26

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回答： Are Mjaavatten 2018-2-27

I have a text file that looks like this. I only need the data under the Px, Py, Pz,... etc header lines. Each set of data is a different number of columns but the same number of rows. How can I filter the text file to only show an array of this data without all the 'Point' information in between and without repeats of the header information? I really don't even need it to display a header since the headers will be the same for every dataset.

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Answer 1

Are Mjaavatten 2018-2-27

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In your case you want to parse all lines containing just numbers into an array (which you may later want to split by e.g.: Px = data(:,1) etc.). Providing all data lines hold the same number of entries, this should do the trick:

fid = fopen('Carolyn.txt');   
c = textscan(fid,'%s','delimiter','\n');
fclose(fid);
lines = c{1};
data = [];
for i = 1:length(lines)
    if ~isempty(lines{i})
        parsenumbers = textscan(lines{i},'%f');
        numbers = parsenumbers{1};
        if ~isempty(numbers)  % Line consists of numbers
            data = [data;numbers'];
        end
    end
end