Read fixed number of numbers from text file

i have this matrix bellow save in a text file called test.txt

1 2 3 ...... ......100

101 102 ...... ..200

...........................

901 902 .......1000

i want to read only the first 500 numbers from it . how to do it ?

thanks in advance

Answer 1

[Jeremy Hughes]

I assume the dots are meant as ellipses and not literally dots in the file. If so, you can use textscan pretty effectively here.

fid = fopen(filename);
d = textscan(fid,'%f',500);
d = d{1};
fclose(fid);

And if there are literally dots,

d = textscan(fid,'%f',500,'Whitespace',' .');

[Brahim Aboumouadine]

this was really helpful , thanks a lot :)