Extract numbers out of a .mat file that has both characters and numbers

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Karthik
Karthik 2015-7-16
编辑： Stephen23 2015-7-17
Hi, How can I extract numbers out of this .mat file ? Thanks.

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Azzi Abdelmalek
Azzi Abdelmalek 2015-7-17
编辑：Azzi Abdelmalek 2015-7-17
a=regexp(text,'(?<==)\d+(.)?(\d+)?','match','once')
id=~cellfun(@isempty,a(:,1))
a=str2double(a(id))
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Karthik
Karthik 2015-7-17
Hi, Thanks. The numbers like 2.3*e-4 are being read as 2.3. Not producing the exact numbers. Can you let me know how to fix it.
Stephen23
Stephen23 2015-7-17
编辑：Stephen23 2015-7-17
Standard scientific notation using "E" syntax does not use any multiplier symbol, so your source data is non-standard and therefore MATLAB does not recognize it. Therefore you basically have two choices:
  • Change the source data to use standard E-notation.
  • Read the data into MATLAB as strings, and then do some hackery using regexprep before converting to numeric.

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