/[escript]/trunk/pyvisi/examples/seismicOffsetPlotExample.py
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Contents of /trunk/pyvisi/examples/seismicOffsetPlotExample.py

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Revision 605 - (show annotations)
Mon Mar 20 07:16:27 2006 UTC (14 years, 3 months ago) by gross
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pyvisi with vtk runs noe on the altix
1 # $Id: seismicOffsetPlotExample.py,v 1.3 2005/11/08 05:11:40 paultcochrane Exp $
2 """
3 Example of plotting multiple curves offset from each other with pyvisi
4
5 This is an example with simulated seismic data
6 """
7
8 # set up some data to plot
9 from Numeric import *
10
11 # read in the data (being fortunate we know how much data there is)
12 fp = open('waves.dat')
13 t = zeros((100), typecode=Float)
14 x = zeros((13), typecode=Float)
15 data = zeros((100,13), typecode=Float)
16 for i in range(100):
17 for j in range(13):
18 line = fp.readline()
19 arr = line.split()
20 t[i] = float(arr[0])
21 x[j] = float(arr[1])
22 data[i,j] = float(arr[2])
23 fp.close()
24
25 # example code for how a user would write a script in pyvisi
26 from esys.pyvisi import * # base level visualisation stuff
27 #from esys.pyvisi.utils import * # pyvisi specific utils
28 # import the objects to render the scene using the specific renderer
29 #from esys.pyvisi.renderers.gnuplot import * # gnuplot
30 from esys.pyvisi.renderers.vtk import * # vtk
31
32 # define the scene object
33 # a Scene is a container for all of the kinds of things you want to put
34 # into your plot for instance, images, meshes, arrow/vector/quiver plots,
35 # contour plots, spheres etc.
36 scene = Scene()
37
38 # create a LinePlot object
39 plot = LinePlot(scene)
40
41 # add some helpful info to the plot
42 plot.title = 'Sample seismic data'
43 plot.xlabel = 't'
44 plot.ylabel = 'y'
45
46 plot.linestyle = 'lines'
47
48 # assign some data to the plot
49 plot.setData(t, data[:,0], data[:,1], data[:,2], data[:,3],
50 data[:,4], data[:,5], data[:,6], data[:,7], data[:,8],
51 data[:,9], data[:,10], data[:,11], data[:,12], offset=True)
52
53 # render the scene to screen
54 scene.render(pause=True, interactive=True)
55
56 # save the scene to file
57 # save as png
58 plot.setData(t, data[:,0], data[:,1], data[:,2], data[:,3],
59 data[:,4], data[:,5], data[:,6], data[:,7], data[:,8],
60 data[:,9], data[:,10], data[:,11], data[:,12], offset=True)
61 # have to do this now because we've already
62 # render()ed the scene. This requirement
63 # will be removed in the future.
64 scene.save(fname="seismicOffsetPlotExample.png", format=PngImage())
65
66 # save as postscript
67 plot.setData(t, data[:,0], data[:,1], data[:,2], data[:,3],
68 data[:,4], data[:,5], data[:,6], data[:,7], data[:,8],
69 data[:,9], data[:,10], data[:,11], data[:,12], offset=True)
70 # have to do this now because we've already
71 # save()d the scene. This requirement will
72 # be removed in the future.
73 scene.save(fname="seismicOffsetPlotExample.ps", format=PsImage())
74
75 # vim: expandtab shiftwidth=4:
76

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