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

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Aaron Clewer
Aaron Clewer 2020 年 3 月 10 日
コメント済み: ME 2020 年 3 月 10 日
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)

回答 (2 件)

Ameer Hamza
Ameer Hamza 2020 年 3 月 10 日
編集済み: Ameer Hamza 2020 年 3 月 10 日
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)
  2 件のコメント
Ameer Hamza
Ameer Hamza 2020 年 3 月 10 日
Glad to be of help.

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ME
ME 2020 年 3 月 10 日
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.
  2 件のコメント
ME
ME 2020 年 3 月 10 日
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.

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