MATLAB Answers

Search a text file for a particular string and then read all values in that line in which string is present into MATLAB

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Luffy
Luffy on 21 Oct 2013
Commented: Nom on 17 Sep 2019
Example:
* T-Spice 14.11 Simulation Wed Sep 18 16:08:03 2013 E:\Stuff\Spice\SPICE PROGRAMS\New folder\ckt1\Cktspice.sp
* T-Spice Win32 14.11.20090811.05:10:58
*SEDIT: Alter=0
*SEDIT: Analysis types DCOP 1 ACMODEL 1 AC 0 TRANSIENT 0 TRANSFER 0 NOISE 0
* BEGIN NON-GRAPHICAL DATA
DC ANALYSIS - temperature=25.0
v = [2.0000e+000 1.0000e+000 1.0000e+000 1.0000e+000]
* END NON-GRAPHICAL DATA
I need to search the text file for character v & then matlab should take v as a vector.
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dpb
dpb on 21 Oct 2013
doc input % and friends
I'd look at using an OS utility such as grep that returns the file name and line number for the given pattern. If needs be that you must do this inside Matlab
doc system

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Answers (2)

Cedric Wannaz
Cedric Wannaz on 21 Oct 2013
Edited: Cedric Wannaz on 21 Oct 2013
content = fileread( 'myFile.txt' ) ;
tokens = regexp( content, 'v =\s*\[([^\]]+)', 'tokens' ) ;
values = sscanf( tokens{1}{1}, '%f' ) ;
where values is a column vector; transpose it if you need a row vector.
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