How to read a term of the file

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Moises Belda 2019-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/467861-how-to-read-a-term-of-the-file

编辑： Jan 2019-6-19

force.zip

Hi, I would know if someone can help me with this. In the file I have, I only need to read the third term of the second column, I mean, the total_z colum, which in the first row is -9.471316e-01. So I need to obtain this term of all the file.

Thanks

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Bob Thompson 2019-6-19

编辑：Bob Thompson 2019-6-19

I do not have the ability to look at your data. Would you describe the file layout as a numeric data sheet? If so, the simplest way to accomplish what you are asking for is to read the entire file into a matrix, and then extract that one value by indexing.

Moises Belda 2019-6-19

编辑：Jan 2019-6-19

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I have something like that, which allows me to read the first term of this column, but I need to read the third term. I know I have to change something, but I quite confused with the %f and %s.

%%
ffs = 'h:\m\cssm\force.dat'; % change to your folder
fid = fopen( ffs, 'r' );
cac = textscan( fid, '%*f%s%*s%*s', inf, 'Headerlines',4, 'Delimiter','\t'); 
fclose( fid );
total_x = cellfun( @(chr) sscanf(chr,'(%f %*f %*f)'), cac{1} );