Plotting values from while loop results

Question

0 个投票

Hi, anyone knows how do i store the values for b in vector form, so that i can plot a graph using the values of b.

a=0

while a<100

   b= 2*a
   a= a+1

end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

Answer 1

Matt Fig 2012-11-27

编辑：Matt Fig 2012-11-27

0 个投票

a = 1;
while a<=100
   b(a) = 2*a;
   a = a+1;
end
plot(b)

In general, the more MATLABish way to get b is like this:

b2 = 2*(0:100);

Now b2 is equal to b.

Answer 2

Image Analyst 2012-11-27

0 个投票

a=0
while a<100
   b(a+1) = 2*a;
   a = a+1;
end
plot(b);

or even better (to get the "a" axis correct so you'll have b=0 at a=0 instead of at 1):

a = 0 : 99;
b = 2 * a;
plot(a, b, 'ro-');
grid on;