polarFF
=======
```{function}  polarFF(nf2ff,varargin)
```
Full definition:
```{code-block} matlab
h = polarFF(nf2ff,varargin)
```

 plot polar far field pattern

input:
- nf2ff:      output of CalcNF2FF

variable input:
- 'freq_index':  use the given frequency index, see nf2ff.freq
                 default is 1
- 'xaxis':       'phi' (default) or 'theta'
- 'param':       array positions of parametric plot
                 if xaxis='phi', theta is parameter, and vice versa
                 default is 1
- 'normalize':   true/false, normalize linear plot
                 default is false, log-plot is always normalized!
- 'logscale':    if set, plot logarithmic polar
                 set the dB value for point of origin if scalar
                 set point of origin and maximum if 2-element array
                 values below minimum will be clamped
                 default is -20
- 'xtics':       set the number of tics for polar grid
                 default is 5

example:

    polarFF(nf2ff, 'freq_index', 2, ...
                   'xaxis', 'phi', 'param', [1 46 91] );

    polarFF(..., 'normalize', true );
    polarFF(..., 'logscale', -30 );
    polarFF(..., 'logscale', [-30 10]);

    polarFF(..., 'xtics', 10);

see examples/antenna/infDipol.m

See also CalcNF2FF, plotFFdB, plotFF3D



-----------------------
author: Thorsten Liebig, Stefan Mahr