HELP! My for loop code won't produce a line on the graph I plot

When I run my code, results will appear but my results just won't show on the graph:

K = 1
i = sqrt(-1);

n=0;
for w = 0.1:1000
    n=n+1;
    A(n) = w;
    G(n) = K/((i*w)*((i*w)+1.71)*((i*w)+100));
end
M(n) = abs(G(n));
F(n) = 20*log(M(n));
semilogx(w,F)

Answer 1

[Ameer Hamza]

You were just plotting a single point. Check the indexing of variables after the for loop.

K = 1;
i = sqrt(-1);

n=0;
W = 0.1:1000;
for w = W
    n=n+1;
    A(n) = w;
    G(n) = K/((i*w)*((i*w)+1.71)*((i*w)+100));
end
M = abs(G);
F = 20*log(M);
semilogx(W,F)

[Aaron Clewer]

This helped so much. 1000 thank yous

[Ameer Hamza]

Glad to be of help.

Answer 2

[ME]

I'm not 100% sure but I'd guess you want the last line to be:

semilogx(A,F)

because otherwise everything is plotting at the same value on the x-axis.

[Aaron Clewer]

This ends up giving me the same value at the x-axis as the previous code. Thank you for the help though

[ME]

Plots over the whole range of the x-axis for me. I guess the issue is that the line is right along the edge of the figure window. If you change the view of the axes or the axes limits then you'll be able to see the line.