How can I read the first 100 lines of a file?

Example of the file:

I am using this code to read the first line and it works fine. When I try to increase the size of A to 100 lines, instead of storing line by line is storing line by column. How to fix it? Regards, Tina

 fid = fopen('NGRM_StrDisps_rot_03162015_short.txt');
 formatSpec = '%f %f %f %f %f %f %f';
 sizeA=[1 7];
 A = fscanf(fid,formatSpec,sizeA);
 fclose(fid)

[tina26]

I have a very large data file (.dat) around 60 gigs similar with the example I posted earlier. It is not necessary for me to import all of the data into MATLAB. I would like to read the first 5 lines and skip the sixth one to reduce the size of the file. After that I would like to read the first n lines (approximate 5 gigs of data) and save it under a different file. What is the easiest way to do that? Thank you.

Answer 1

[Jan]

What about:

A = fscanf(fid, '%f', [7, inf])

Perhaps you want to transpose the output.