Display a structure in matlab

This page described how to display a structure used in a CMU simulation in matlab or similar plotting software.

Extract the cylinder boundaries

Open your structure file in Winfield. Click more options, then "write pos file..." at the top right. Enter an appropriate file name, eg formatlab.dat. Click 'ok'.

Winfield will now write a text file containing 7 columns:

r theta radius ( Re(eps), Im(eps) ) a b

where each line describes an inclusion. r,theta are the cylindrical coordinates of the centre of the cylinder, radius is the radius of the cylinder. ( Re(eps), Im(eps) ) are the real and imaginary part of the permittivity of the inclusion, and a and b are integer numbers of no relevance for the present purpose.

If a cladding and jacket are present, two final lines will give their coordinates and radius.

Importing in matlab

You will need to write a matlab routine to read the above file and draw the appropriate circles in your matlab figure. If you have such a routine, feel free to upload it onto this wiki!