PyGDX
PyGDX is a Python 3 package for accessing data stored in GDX-formatted files, through the Python bindings for the GAMS GDX API. Inspired by the similar package, also named py-gdx, by Geoff Leyland, this version makes use of xarray to provide labelled data structures which can be easily manipulated with NumPy for calculations and plotting.
Documentation is available at http://pygdx.readthedocs.org, built automatically from the contents of the Github repository.
PyGDX is provided under the MIT License (see LICENSE
).
Example
With the following GAMS program:
set s 'Animals' /
a Aardvark
b Blue whale
c Chicken
d Dingo
e Elephant
f Frog
g Grasshopper
/;
set t 'Colours' /
r Red
o Orange
y Yellow
g Green
b Blue
i Indigo
v Violet
/;
set u 'Countries' /
CA Canada
US United States
CN China
JP Japan
/;
parameter p(s,t,u) 'Counts of nationalistic, colourful animals'
/ set.s.set.t.set.u 1 /;
execute_unload 'example.gdx'
The parameter p
can be accessed via:
>>> import gdx
>>> f = gdx.File('example.gdx')
>>> f.p[:,'y','CA']
a 1
b 1
c 1
d 1
e 1
f 1
g 1
dtype: float64