read formated text file

Dear

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

Thanks

[Mario Malic]

Check the documentation for the HeaderLines input argument.

Answer 1

[Abhishek Gupta]

Hi,

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);
fclose(fid);

For more details, check out the documentation link below: -

https://www.mathworks.com/help/matlab/ref/textscan.html