while plotting the graph ,it appears blank. How to solve this problem?

Question

0 个投票

My code is as below

f=[1,2,3,4,5,6,7,8,9,10];
l=length(f);
for i=1:l
    t=1/0.4521;
    z=3.68*10^(-7)*(t)^(1/2)*(2*3.14*f(i))^0.5;
    plot(f(i),z);
end

1 个评论
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Jan 2012-4-26

Please format the code.

Answer 1

Thomas 2012-4-26

1 个投票

Try saving z as a vector and plotting it outside the loop..

f=[1,2,3,4,5,6,7,8,9,10]; 
t=1/0.4521; 
l=length(f);
for i=1:l 
      z(i)=3.68*10^(-7)*(t)^(1/2)*(2*3.14*f(i))^0.5;   
  end 
  plot(f,z);

Isha Deshpande 2012-4-28

Hi Thomas, thanks for solving my issue

i am getting graph properly, my code now looks as below

{f=1:100;

t=1/0.4521;

for i=1:100

z(i)=(3.68*10^(-7)*(t)^(1/2)*(2*3.14*f(i))^0.5);

end

loglog(f,z)}

Walter Roberson 2012-4-28

You should be able to simplify the code by eliminating the loop and using

z = 3.68E-7 * sqrt(t) * sqrt(2 * pi) * sqrt(f);

or if you want to reduce sqrt() calls,

z = 3.68E-7 * sqrt(2 * pi * t * f);