Convert_VF_DiscMaterial
=======================
```{function} function Convert_VF_DiscMaterial(raw_filesuffix, mat_db_file, out_filename, varargin)
```
Full definition:
```{code-block} matlab
function Convert_VF_DiscMaterial(raw_filesuffix, mat_db_file, out_filename, varargin)
```

function to convert the virtual family raw voxel data to a disc material
property required by CSXCAD/openEMS

Note: The conversion is (currently) done, converting the broad-band data
into a relative permittivity and conductivity for a given frequency of
interest. Thus the converted model is only valid within a small frequency
range around the used conversion frequency.

required arguments:
- raw_filesuffix:     suffix for the virtual family body model files
                      the files:
                      <raw_filesuffix>.txt and <raw_filesuffix>.raw
                      must be found!
                      example: '/tmp/Ella_26y_V2_1mm'
- mat_db_file:        tissue database file (incl. full path if necessary)
                      example: '/tmp/DB_h5_20120711_SEMCADv14.8.h5'
- out_filename:       outfile name, e.g. 'Ella_298MHz.h5'

variable arguments (key/value):
- 'Frequency':        specifiy the frequency of interest (required!)
- 'Center':           0/1 make the model centered around (0,0,0)
                      (default is off)

Requirements:
  - Matlab, Octave is currently not supported due to missing hdf5 write
  functions
  - ~6GB of RAM to convert the largest voxel model
  - Virtual Family voxel models
      e.g. Duke_34y_V5_1mm.raw and .txt
      See http://www.itis.ethz.ch/itis-for-health/virtual-population/overview/
  - Virtual Family tissue database
      e.g. DB_h5_20120711_SEMCADv14.8.h5
      Download from: http://www.itis.ethz.ch/assets/Downloads/TissueDb/DBh5_20120711_SEMCADv14.8.zip

example:

    Convert_VF_DiscMaterial('/tmp/Ella_26y_V2_1mm', ...
                            '/tmp/DB_h5_20120711_SEMCADv14.8.h5', ...
                            'Ella_centered_298MHz.h5', ...
                            'Frequency', 2.4e9);

(c) 2013 Thorsten Liebig