Importing only specific entries from a text file to matlab
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Krish on 21 Mar 2013
I am trying to import a text file, but do not need all the information, just only specifics (after the : operator). Here is a sample version of the text file
Select type (A or B or C): C Enter the number of days: 30 Select test type (Reg or Mod): Reg Enter the number of TC's used: 1
The data is a mix of alphanumeric and numeric. So I need something that handle both. Any help will be appreciated. Thanks
Cedric Wannaz on 21 Mar 2013
Edited: Cedric Wannaz on 21 Mar 2013
Regular expressions are probably your best option. Look at the following:
>> s = 'Select type (A or B or C): C Enter the number of days: 30 Select test type (Reg or Mod): Reg Enter the number of TC''s used: 1' ;
>> results = regexp(s, '(?<=:\s+)\S+', 'match')
'C' '30' 'Reg' '1'
The second argument in the call to REGEXP is the pattern. Let me know if you need help to understand it.
Cedric Wannaz on 22 Mar 2013
Indexing is not the simplest thing to understand by ourselves actually, this is why I gave a little more explanations than usual. Paradoxically, understanding how to solve nice enough differential equations with MATLAB is simpler than understanding basic data structure and indexing.
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