regexp help

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Edward on 4 Apr 2012
Commented: Stephen23 on 11 Jun 2021
Hi, im trying to read in some numbers from some HTML:
'<br>1,020.32 mb<br>'
Im currently using regexp(string,'\d+','match'), how can i read in a number such as the one above that has a comma and a decimal point?
  1 Comment
Stephen23 on 28 Feb 2015
Edited: Stephen23 on 28 Feb 2015
For developing and checking regular expressions here is an interactive helper:

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Accepted Answer

Walter Roberson
Walter Roberson on 4 Apr 2012
regexp(string, '(\d+,)*\d+(\.\d*)?', 'match')
The above is flexible enough to support any number of leading groups of digits and commas (including no leading groups). It is also flexible enough to support the possibility that the decimal point and following digits are not present -- so it supports the equivalent of your \d+ (plain integers without commas or decimal points). Furthermore it supports a trailing decimal point with no digits afterwards.
Stephen23 on 11 Jun 2021
S = '2021-06-08-Blank5-D150mm-R0mm-7LPM-0N2Shild-12.6mVPower-105ns-25ns-G600-C580-2Acc-60xInt-4VBins-slit10u-100Frames-NoIcorr-Polar-NoFilter.spe';
P = str2double(regexp(S,'\d+\.?\d*(?=mVPower)','match','once'))
P = 12.6000

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