ezplot axis

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James Wright
James Wright 2012-3-4
Hi,
I'm trying to use ezplot plot a symbolic function, and I will then use hold on to plot another 'picture' with it (though just using the plot function this time). The problem is that I want the axis swapped from what ezplot is chosing. Previously, I was using,
view([90 -90])
to swap the axis, however it seems to swap the next picture I plot too, which I didn't want swapped. To counter this I tried to set the axis from the start using,
ezplot(@(lam,epsy) L,[0 0.8 0.2 1]);
However this seems to cause some infinite loop, as instead of plotting almost instantly as it was previously doing, it causes my computer to make a lot of noise and takes a long time, and I always end up cancelling it before it finishes. If anyone can help I'd be very thankful,
James
(see full code below if you wish)
function StabilityPWVL(beta,n)
syms epsy lam x;
for k = 1:n
a = int(cos(x)*(cos(k*x)),x,0,2*pi);
b = int(cos(x)*(sin(k*x)),x,0,2*pi);
a = a/pi;
b = b/pi;
f = (beta/2)^2 + ((2*lam/k)-1)^2;
g = (a^2 + b^2)*(3*epsy/4)^2;
L = f - g;
figure(k)
ezplot(@(lam,epsy) L,[0 0.8 0.2 1]);
%h = ezplot(L,[0 0.8 0.2 1]);
%set(h,'color','k')
%view([90 -90])
end

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采纳的回答

James Wright
James Wright 2012-3-5
function [] = StabilityPWVL(n)
syms x
for k = 1:n
a = double(int(cos(x)*(cos(k*x)),x,0,2*pi)/pi);
b = double(int(cos(x)*(sin(k*x)),x,0,2*pi)/pi);
L = @(lam,epsy) ((2*lam/k)-1).^2 - (a^2 + b^2)*(3*epsy/4).^2;
figure(k)
ezplot(L,[0.2 1],[0 0.8])
end

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