regexp help

31 次查看（过去 30 天）
Edward
Edward 2012-4-4
评论： Stephen23 2021-6-11
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 个评论
Stephen23
Stephen23 2015-2-28
编辑：Stephen23 2015-2-28
For developing and checking regular expressions here is an interactive helper:
http://www.mathworks.com/matlabcentral/fileexchange/48930-regular-expression-helper

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2012-4-4
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.
  5 个评论
显示 3更早的评论
Evangelos Stefanidis
Evangelos Stefanidis 2021-6-11
In my case I had the following string and I was interested in getting the number between -....mVPower-. That was my coding:
Sting='2021-06-08-Blank5-D150mm-R0mm-7LPM-0N2Shild-12.6mVPower-105ns-25ns-G600-C580-2Acc-60xInt-4VBins-slit10u-100Frames-NoIcorr-Polar-NoFilter.spe'
pattern1='(?<=\-)(\d+,)*\d+(\.\d*)?(?=mVPower\-)';
power=str2double(regexp(fname,pattern1,'match'));
Stephen23
Stephen23 2021-6-11
Ran in:
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

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by