Matlab - Plotting the main lobe only using 'mesh'

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Plotting the main lobe only using 'mesh'

Mohammad AL-Saleh

2007-08-30, 8:59 pm

Hello,
I have plotted the 3-D pattern of a phased array using
'mesh'. I had 360 value for phi and 180 value for theta and
so the directivity matrices was 180x360. The total possible
values of directivity was 360x180 = 64800 point. Now, in the
figure I have a complete plot in 3-D, can you tell me please
how to extract the main lobe in the figure. The max
directivity was at theta=30, phi = 45 for example, so the
first quarter should fully have the main beam.
What I want is to plot the main lobe alone then rotate it
around the z-axis to show my advisor the scanning process.

If you write me what should I exactly add after my code I
will be very thankful.
Thanks

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