by Metin Guns » Sun, 28 Jul 1991 03:12:01
Metin Gunsay.
by Peter Kootsook » Mon, 29 Jul 1991 15:15:43
There is a similar problem in statistics, when the data to be analysed
are "circular" in nature (e.g. compass bearings). When the pdf's of in these sorts of problems have to be calculated, a "modulo" convolution operation
has to be defined. There is a book on this topic by K.V. Mardia, "Statistics of Directional Data", Academic Press, 1972.
I'm not sure whether this is of any use, but it sounds similar to the problem
as you've stated it.
Peter Kootsookos
I would like some suggestions here. I was trying to plot the
antenna field pattern. Which is calculated in terms of the
polar parameters theta and phi.
E(theta,phi)
In order to plot the 3-d polar plot i was obtaining the
transform value of each of the rectangular coordinates.
ie
Ez = E(i,:) .* cos(theta);
Ex = cos (phi(i))* (E(i,:) .* sin (theta));
Ey = sin (phi(i))* (E(i,:) .* sin (theta));
but this form is not very visually helpful, i was trying to obtain the same
3-d plot using the 'surf' plotting in matlab.
but i am finding it difficult to calculate the array which would correspond to
E(theta,phi) and give me the surface polar plot.
I hope i made some sense there.
pls do let me know if some one has any idea how to do this.
Regards,
Avishek
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