specific text to excel

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Bishal Chudal
Bishal Chudal 2021-8-18
评论： Walter Roberson 2021-8-19
I have several text files with diffrent file name, and I need to extract specific data from those text file and record it in excel. The sample text file is below. In each text file there are 1000 collapse multiplier value and they are both positive and negative values. I have to extract this 1000 data from multiple text file and record in a excel file. Each text file have 1000 data, so for 5 text file I need 5 columsns in excel. Please help to solve it.

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回答（1 个）

Walter Roberson
Walter Roberson 2021-8-18
filenames = {'T3.txt', 'shortrun.txt', 'scarecrow.txt', 'longrun.txt', 'T3b.txt'};
outfile = 'collapse.xlsx';
colnames = 'A':'Z'; %needs fixing if you have more than 26
for K = 1 : length(filenames)
thisfile = filenames{K};
S = fileread(thisfile);
collapses = str2double(regexp(S, '(?<=COLLAPSE MULTIPLIER =\s+)\S+', 'match'));
writematrix(collapses(:), outfile, 'range', colnames(K));
end
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Bishal Chudal
Bishal Chudal 2021-8-19
I have attached an input files, please help me to go trough it. I want those 1000 data from each input file in an excel sheet. Thanks
Walter Roberson
Walter Roberson 2021-8-19
Tested. Finishes in a small number of seconds.
I took the liberty of putting the file name as the column header.
dinfo = dir('*.txt');
filenames = {dinfo.name};
outfile = 'collapse.xlsx';
colnames = 'A':'Z'; %needs fixing if you have more than 26
for K = 1 : length(filenames)
thisfile = filenames{K};
[~, basename] = fileparts(thisfile);
S = fileread(thisfile);
CM = regexp(S, '^(COLLAPSE MULTIPLIER =\s+)(?<CM>\S+)', 'names', 'lineanchors');
collapses = [basename, num2cell(str2double({CM.CM}))].';
writecell(collapses, outfile, 'range', colnames(K) + "1");
end

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