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problems with my contour plot

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Luke Radcliff
Luke Radcliff 2017 年 2 月 2 日
回答済み: Walter Roberson 2017 年 2 月 2 日
my second contour plot with time, is not starting to plot at (0,0), which it's supposed to. Not sure why
m = 8;
ft = 40;
b = linspace(20,200,10);
k = linspace(20,200,10);
for j = 1:length(b)
for i = 1:length(b)
b1 = b(j);
k1 = k(i);
G = tf([1],[m b1 k1]);
sys = ft*G;
[y,t] = impulse(sys);
disp(j,i) = max(y);
time(j,i) = max(t);
end
end
figure(1)
contourf(k,b,disp)
figure(2)
contourf(k,b,time)

回答 (1 件)

Walter Roberson
Walter Roberson 2017 年 2 月 2 日
Your k and b start at 20, so you do not have data for 0, 0. You could force the plot to start at 0, 0:
xlim([0 200]);ylim([0 200])

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