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How to read a data from txt file: only a specific part of txt

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serhat tekebas
serhat tekebas 2018-6-13
评论： Paolo 2018-6-14
Hi; I have a txt file as above.I want to get the value from marked section of txt and assign it to a variable.
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Paolo
Paolo 2018-6-13
You can use regexp to match the sampling value. The expression below assumes that the character "E" is followed by a "-" character.
text = fileread('20171109_144634_14306_6O61N2.txt');
[match] = regexp(text,'(\d*\.\d*E-\d*)','match');
sampling = str2double(match{1});
sampling =
0.0050
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serhat tekebas
serhat tekebas 2018-6-14
what is the difference between your solution and
text = fileread('20171109_144634_14306_6O61N2.txt');
timevar=text(191:203)
Paolo
Paolo 2018-6-14
@serhat
If for some reason your time information changes position in the text file, text(191:203) will fail to extract that information. The regex pattern will find the data anywhere in the file.

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