about negative polar plots

Erik Max Francis max at alcyone.com
Tue Aug 14 09:42:55 CEST 2007

yadin wrote:

> hi am doing a polar plot of the radiation pattern of an antenna.
> the polar plots represents the value of the power in dB's and the dB
> go from -40dB to 0dB
> as the angle theta changes from 0 to 2*pi rads
> the polar plot in python goes with positive values
> how can i solve this problem
> rough example
> example:
> power = arange(-40,0,-10)
> theta = arange(0, 2pi,pi/12)
> polar(power,theta)
> title.....?
> how can i show the step on the polar plot  plot(-40, -30,-20,-10,0)

What is arange?  What is polar?  What is plot?  You're going to have to 
give more information about what you're doing, what you're using to do 
it, and where it's giving you unexpected or undesired results if you 
want help solving your problem.

Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   So look into my eyes / I won't tell you lies
    -- Neneh Cherry

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