Writing into .txt file

I have currently created two separate matrices both [500x1] and am trying to write them into one .txt file but it is not working. If anyone could give suggestions, it would be appreciated.

close all
clear all
M = 500;
D = 0.05;

angl_min = pi;
angl_max = 2*pi;
p = rand(M,1);
angle_random = angl_min + ((angl_max - angl_min).*p);
v = (D/2)*ones(M,1); 

fp = fopen('random_cylind.txt','w+');
for i = 1:M
fprintf(fp,'%2.25f\t%2.25f\n',v,angle_random);
end
fclose(fp);

Answer 1

[Vladimir Sovkov]

T = [v angle_random]; % this is if you want a 2-column file
save('random_cylind.txt','T','-ascii','-double'); % explore available options for "save" in Matlab documentation