read formated text file

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Luis Isaac
Luis Isaac on 13 Apr 2021
Edited: Abhishek Gupta on 16 Apr 2021
I have a very large file(250 MB aporx)
The first 8 lines are administrative information and the rest are the data itself
The data is well formated, and in fact without the first lines the whole file can be read with textscan(line, '%f %f %f %f)
Is it posible to applied the textscan intruction to a part of the file, i.e. how to discard the 8 first lines and use textscan (or something similar for the rest)
I've made some programs using for loop and fgets but the program takes some time to load the data becasuse the file is too big
  1 Comment
Mario Malic
Mario Malic on 13 Apr 2021
Check the documentation for the HeaderLines input argument.

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Accepted Answer

Abhishek Gupta
Abhishek Gupta on 16 Apr 2021
Edited: Abhishek Gupta on 16 Apr 2021
As per my understanding, you want to read a text file with 8 header lines. You can scan the text as follows: -
fid = fopen('mydata.txt');
data = textscan(fid, '%f %f %f %f', 'headerLines', 8);
For more details, check out the documentation link below: -

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