How to save data from a file with text and numbers?

I have to load a file to Matlab with words and numbers and perform few operations. Structure of the file to be loaded is as follows:

Step
0
Number
1000
Box Dimension
0 10 0
10 0 0
0 0 10
ID Type 
1 2
2 3
3 1
.....

i need to load this file and save lines starting from 'Step' to 'ID Type' to another file. Is it possible to do such operations in MATLAB?

[Mathieu NOE]

sure

use readlines or fileread

T = fileread('data2.txt');
TT = split(T);

% or 
TTT = readlines('data2.txt');

[per isakson]

Here the tags shall not have a leading #.

Answer 1

[per isakson]

"load this file and save lines starting from 'Step' to 'ID Type' to another file" Including the "ID Type" block - or not ?

This script includes the "ID Type" block. I assume that the sample data is followed by a specific word. I've replaced the ending "...." with the string "Something else".

%%
chr = fileread( 'Untitled3.txt' );
txt = regexp( chr, '^.+(?=Something else)', 'match','once' );
fid = fopen( 'another_file.txt', 'wt' );
fprintf( fid, '%s', txt );
fclose( fid );
type another_file.txt

Step
0
Number
1000
Box Dimension
0 10 0
10 0 0
0 0 10
ID Type 
1 2
2 3
3 1

"and perform few operations" In what form do you want which data?

Second thought:

The function, regexp(), is powerful and fast but not the easiest to get the hang of. In this case the statement

txt = regexp( chr, '^.+(?=Something else)', 'match','once' );

can be replaced by

pos = strfind( chr, 'Something else' );
txt = chr(1:pos(1));    % pos(1) in case there are many 'Something else' in the file

or

txt = extractBefore( chr, 'Something else' );

I should have used extractBefore() in my answer. It's easy to use and fast.

[Abhiram B R]

Thanks this worked