comment on this radiation pattern

hi all
I got this radiation pattern for an omnidirectional antenna
can u tell this is correct or not
../imgqa/eboard/Antenna/rf-vel1ixvbchw.png
kindly look to the db values in circle
how should i plot Eplane cross and copolar components
regards
kartik

- - - Updated - - -

hi
reply plz

do you mean the purple line plot or the redline plot ?

redline is clearly omnidirectional, while the purple looks like a dipole plot.

If the red is from azimuthal plane and the purple is from elevation, both will be correct.
Pattern of a dipole is omnidirectional like that.

ah yes ok. I missed that phi value in the caption

I need to know that how to plot the co and cross polar conponents in H and E plane