How to extract info from string using regexp?

I have a text file with a number of lines such as:

[DEBUG][HoraCorrelationMatrixNode] Polygon 2303 id 857befored

[DEBUG][HoraCorrelationMatrixNode] Polygon 2304 id 88befored

[DEBUG][HoraCorrelationMatrixNode] Polygon 2305 id 930befored

[DEBUG][HoraCorrelationMatrixNode] Polygon 2306 id 1000d

[DEBUG][HoraCorrelationMatrixNode] Polygon 2307 id 1001d

I need to extract both polygon number (2303) and its id (857befored). How to write a regular expression pattern to obtain both information?

Thanks

[Peter Valent]

@Stephen Cobeldick: It has to be regular expression beccause the txt file also contains line that are formated diferently. I Think that a regular expression is the best solution for this task. I just didn't know how to write the patterns. But thank you for suggestions.

Answer 1

[Guillaume]

This should work:

filecontent = fileread('c:\somewhere\somefile');
polyid = regexp(filecontent, 'Polygon (\d+) id (\S+)', 'tokens');
polyid = vertcat(polyid{:});

result = table(str2double(polyid(:, 1)), polyid(:, 2), 'VariableNames', {'Polygon', 'ID'})

[Peter Valent]

Works very well. Thanks.

Answer 2

[Raghunandan V]

Hi,

Since all the lines are of same format. I would reccomend you to do something like this

str = ['[DEBUG][HoraCorrelationMatrixNode]  Polygon 2303 id 857befored']
Polygon_num = str(45:49)
id_num = str(52:end)

This would be easier to implement