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## EQDSK 2 HELENA ##
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Converts a G-EQDSK formatted Grad-Shafranov solution
on an R-Z mesh and converts it into a set of input files
for the HELENA fixed-boundary equilibrium solver.
Can be used to refine an equilibrium from EFIT for
input to a linear stability code like ELITE.
Usage
=====
Basic use:
IDL> eqdsk2helena, "input.geqdsk"
A graph will be plotted showing some contours of psi,
the contour used for the boundary shape (in red), and
the points equally spaced in theta as black crosses.
Settings
--------
psin = 0.995 Set the normalised psi for the boundary shape
mfm = 64 Number of points on the boundary.
Must be a power of 2
nrmap = 101 Number of radial points in final mesh
npmap = 129 Number of poloidal points in final mesh
/new Switch to change XML format (see below)
XML formats
===========
Different XML formats are used in HELENA: older versions use
an input_helena.xml which looks like:
....
<numerical_parameters>
<nr> 201 </nr>
<np> 129 </np>
....