Make a polar plot from data
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I am trying to make a polar plot of a set of data in file called 't8m'. I am calculating parameters as:
- theta angle = arccos (column 4)
- bin width = 10 (making a total of 18 bins between 0 and 180deg).
- length of each bin should be = (number of the theta angles that fall in the bin)/total number of all angles between 0 and \pi. This can be seen as length of array within the bin/length of array in that frame.
I am having problems with the for loop and the polar plot command. Can someone help out with this loop? Here is what I have now:
izm=length(t8m)
theta = acosd(nz) ;
for i = drange(0:10:180)
k= 0.0
for j = 1:izm
if theta == i
k = k+1
lth1 = k/length(k)
end
end
end
polar(theta,lth1,'--r')
采纳的回答
Thorsten
2013-2-12
theta = pi*rand(1, 100);
th = linspace(pi/10, pi, 10);
hi = hist(theta, th);
polar(th, hi/numel(theta))
2 个评论
kayak
2013-2-13
Sorry for the confusion. I just generated some sample data (because I do not have nz), using
theta = pi*rand(1, 100);
Of course you have to use
theta = acos(nz);
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