DumpFF2VTK
==========
```{function} DumpFF2VTK(filename, farfield, thetaRange, phiRange, varargin)
```
Full definition:
```{code-block} matlab
DumpFF2VTK(filename, farfield, thetaRange, phiRange, varargin)
```

 Dump 3D far field pattern to a vtk file

input:
- filename:      filename of VTK file, existing file will be overwritten
- farfield:      far field in V/m
- thetaRange:    theta range in deg
- phiRange:      phi range in deg

variable input:
- 'scale':       linear scale of plot, doesn't affect gain values
- 'logscale':    if set, show far field with logarithmic scale
                 set the dB value for point of origin
                 values below will be clamped
- 'maxgain':     add max gain in dB to normalized far field
                 only valid if logscale is set
                 default is 0dB

example:

     DumpFF2VTK(filename, farfield, thetaRange, phiRange, ...
                  'scale', 2, 'logscale', -20, 'maxgain', 3)

- see also examples/NF2FF/infDipol.m

See also CreateNF2FFBox, CalcNF2FF



-----------------------
author: Thorsten Liebig