How to use extractBetween command?

Question

Ivan Mich 2022-5-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728770-how-to-use-extractbetween-command

编辑： per isakson 2022-5-29

采纳的回答： per isakson

input.txt

在 MATLAB Online 中打开

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?

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Answer 1

per isakson 2022-5-28

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728770-how-to-use-extractbetween-command#answer_973160

编辑：per isakson 2022-5-29

在 MATLAB Online 中打开

input.txt

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'}