MATLAB: Read fixed number of numbers from text file

Question

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

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',' .');