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

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.

[KSSV]

Forgot to attach the file....

[serhat tekebas]

Now attached

[Paolo]

Please attach the text file and not the screenshot.

[serhat tekebas]

ok.read

Answer 1

[Paolo]

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

[serhat tekebas]

It works thank you

[serhat tekebas]

One more question to. How to get time information from the same file.

[Paolo]

Sure, what is the time information in that file you provided? What value does it have?

[serhat tekebas]

at 5th row. hour:min:sec

[Paolo]

You can use this expression:

 ([0-1]\d|2[0-3]):([0-5]?\d):([0-5]?\d)(\.\d*)

So:

 text = fileread('20171109_144634_14306_6O61N2.txt');
 [match] = regexp(text,'([0-1]\d|2[0-3]):([0-5]?\d):([0-5]?\d)(\.\d*)','match');
 timevar = (match{1});

timevar =

 '14:46:34.000'

[serhat tekebas]

what is the difference between your solution and

text = fileread('20171109_144634_14306_6O61N2.txt');
timevar=text(191:203)

[Paolo]

@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.