/[escript]/branches/stage3.0/doc/examples/usersguide/poisson_matplotlib.py
ViewVC logotype

Contents of /branches/stage3.0/doc/examples/usersguide/poisson_matplotlib.py

Parent Directory Parent Directory | Revision Log Revision Log


Revision 2584 - (show annotations)
Wed Aug 5 02:44:51 2009 UTC (9 years, 6 months ago) by jfenwick
File MIME type: text/x-python
File size: 1970 byte(s)
Merging Lutz' doco changes to release
1
2 ########################################################
3 #
4 # Copyright (c) 2003-2009 by University of Queensland
5 # Earth Systems Science Computational Center (ESSCC)
6 # http://www.uq.edu.au/esscc
7 #
8 # Primary Business: Queensland, Australia
9 # Licensed under the Open Software License version 3.0
10 # http://www.opensource.org/licenses/osl-3.0.php
11 #
12 ########################################################
13
14 __copyright__="""Copyright (c) 2003-2009 by University of Queensland
15 Earth Systems Science Computational Center (ESSCC)
16 http://www.uq.edu.au/esscc
17 Primary Business: Queensland, Australia"""
18 __license__="""Licensed under the Open Software License version 3.0
19 http://www.opensource.org/licenses/osl-3.0.php"""
20 __url__="https://launchpad.net/escript-finley"
21
22 from esys.escript import *
23 from esys.escript.linearPDEs import Poisson
24 from esys.finley import Rectangle
25 import numpy
26 import matplotlib
27
28 import pylab
29
30 #Testing whether we have a late enough version of matplotlib
31 try:
32 matplotlib.mlab.griddata
33 # generate domain:
34 mydomain = Rectangle(l0=1.,l1=1.,n0=40, n1=20)
35 # define characteristic function of Gamma^D
36 x = mydomain.getX()
37 gammaD = whereZero(x[0])+whereZero(x[1])
38 # define PDE and get its solution u
39 mypde = Poisson(domain=mydomain)
40 mypde.setValue(f=1,q=gammaD)
41 u = mypde.getSolution()
42
43 # interpolate u to a matplotlib grid:
44 x_grid = numpy.linspace(0.,1.,50)
45 y_grid = numpy.linspace(0.,1.,50)
46 x=mydomain.getX()[0].toListOfTuples()
47 y=mydomain.getX()[1].toListOfTuples()
48 z=interpolate(u,mydomain.getX().getFunctionSpace()).toListOfTuples()
49 z_grid = matplotlib.mlab.griddata(x,y,z,xi=x_grid,yi=y_grid )
50 # interpolate u to a rectangular grid:
51 matplotlib.pyplot.contourf(x_grid, y_grid, z_grid, 5)
52 matplotlib.pyplot.savefig("u.png")
53 # uncommend this line if you want to interact with a plot window
54 matplotlib.pyplot.show()
55
56 except AttributeError:
57 print "Your version of matplotlib does not provide the griddata method.\nSkipping example.\n"

  ViewVC Help
Powered by ViewVC 1.1.26