Why I am getting only points while plotting multiple graphs in single plot?

Question

Tapas 2014-4-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/125198-why-i-am-getting-only-points-while-plotting-multiple-graphs-in-single-plot

编辑： Star Strider 2014-4-10

Here is my code for plotting multiple curves in a single plot, but I dont understand why I am getting only points instead of a line. Please suggest me.

ct=0

for mu=-90:1:90

 ct=ct+1
for s= [1 2 3 4 5]

c(s)=gamma(s+1)/(gamma(s+0.5)*sqrt(pi))

d(ct)=c(s).*(cos(mu.*pi/180)).^(2.*s)

plot (mu,d(ct))

hold on

end

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Answer 1

Star Strider 2014-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/125198-why-i-am-getting-only-points-while-plotting-multiple-graphs-in-single-plot#answer_132891

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It plots points because you give it points in your loop.

Try this:

ct=0;
muv = -90:1:90;
for mu = muv
   ct=ct+1;
  for s= [1 2 3 4 5]
c(s)=gamma(s+1)/(gamma(s+0.5)*sqrt(pi));
d(ct,s)=c(s).*(cos(mu.*pi/180)).^(2.*s);
end
end
figure(1)
plot(muv, d(:,1))
hold on
for s = 1:5
plot(muv, d(:,s))
end
hold off
grid

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Tapas 2014-4-10

ok thanks for the answer. i have one more query, how can i change the line style(i mean -k,--k like this) for this kind of multiple plots.

Star Strider 2014-4-10

编辑：Star Strider 2014-4-10

在 MATLAB Online 中打开

My pleasure!

There are only four LineSeries options, so they need to be continuously recycled. Only the plot in figure(1) needs to be changed, the rest of your code remains as previously posted.

This works:

linsty = {'-', '--',  ':',  '-.'};
figure(1)
plot(muv, d(:,1), '-.b')
hold on
for s = 2:5
    cs = circshift(1:4,[0 s]);
    plot(muv, d(:,s), linsty{cs(1)})
end
hold off
grid