matlab indexing issue with range -pi:pi

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I have following code, which i need to plot for alpha versus theta.
But i am unable to index it properly.
Kindly help. Thanks in anticipation. Regards
amin=0.2;
for theta=-3.1416:1.5708:3.1416 (-pi:pi/2:pi)
for gamma=0:0.5:3
phi=amin-(-pi/2);
alpha((?),(gamma*2)+1)=(1-amin)*(((sin(theta-phi)+1)/2).^gamma)+amin;
end
end

采纳的回答

VBBV
VBBV 2022-5-20
编辑:VBBV 2022-5-20
amin=0.2;
theta = -pi:pi/2:pi;
gamma=0:0.5:3;
for T=1:length(theta)
for G = 1:length(gamma)
phi=amin-(-pi/2);
alpha(T,G)=((1-amin)*(((sin(theta(T)-phi)+1)/2).^gamma(G))+amin)/((gamma(G)*2)+1);
end
end
plot(theta,alpha)
xlabel('theta');ylabel('alpha')
  2 个评论
Chetan Fadnis
Chetan Fadnis 2022-5-26
Thank you,
But the maximum values i.e. at -pi and at pi should be 1.
and what will be the case, if amin is also variable between 0 and 1.
Walter Roberson
Walter Roberson 2022-5-26
The maximum value is 1 exactly and it is being plotted. You need to ylim([0 1.1])

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