How to use extractBetween command?

18 views (last 30 days)
Ivan Mich
Ivan Mich on 28 May 2022
Edited: per isakson on 29 May 2022
Hello,
I have a question about a command I want to use. First I have an input .txt value with many lines. From all the line of the input file I would like to separate the lines that between lines
*** SUMMARY OF DATA ***
and
*** END OF SUMMARY ***
I am attaching the input file
I am using these commands:
yy=(regexp(fileread('input.txt'), '\r?\n', 'split')) .';
mid = extractBetween(string(yy),"*** SUMMARY OF DATA ***","*** END OF SUMMARY ***")
but command window shows me
345×0 empty string array
and does not give me the lines between these phrases I would like.
Could you please help me?

Accepted Answer

per isakson
per isakson on 28 May 2022
Edited: per isakson on 29 May 2022
startStr and endStr must be in the same row (i.e. in a contiguous sequence of characters).
%%
chr = fileread('input.txt');
mid = extractBetween( chr,"*** SUMMARY OF DATA ***","*** END OF SUMMARY ***");
str = strsplit( mid{1}, '\r\n' );
str(1) = []; % empty row because of leading \r\n
str(end) = []; % empty row because of ending \r\n
reshape( str, [],1 )
ans = 17×1 cell array
{' # of points of data 9 = 5' } {' # of points of data 8-9 = 3' } {' # of points of data 8 = 4' } {' # of points of data 7-8 = 9' } {' # of points of data 7 = 1' } {' # of points of data 6-7 = 3' } {' # of points of data 6 = 2' } {' # of points of data 5-6 = 10' } {' # of points of data 5 = 6' } {' # of points of data 4-5 = 1' } {' # of points of data 4 = 6' } {' # of points of data 3-4 = 0' } {' # of points of data 3 = 0' } {' # of points of data 2-3 = 0' } {' # of points of data 2 = 0' } {' # of points rec/no data = 0' } {' # of points not rec = 0'}

More Answers (1)

Walter Roberson
Walter Roberson on 28 May 2022
Do not do the regexp split until after the extraction

Categories

Find more on Characters and Strings in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!