SIAM CSE 2009 scientific visualisation for python John Hunter Tradelink Chicago

En presentation över ämnet: "SIAM CSE 2009 scientific visualisation for python John Hunter Tradelink Chicago"— Presentationens avskrift:

1 SIAM CSE 2009 scientific visualisation for python John Hunter Tradelink Chicago jdh2358@gmail.com

2 SIAM CSE 2009 Talk outline The matplotlib community matplotlib 3 ways: shell (pylab), scripts and embedding (GUIs)‏ Interactive demo

3 SIAM CSE 2009 The matplotlib community approx 15,000 downloads / month + linux, etc developers: 17 with commit rights, 4-5 active at one time mailing list: approx 1000 subscribers and 500+ posts / month institutional users – STScI, JPL, NOAA, NIST, Los Alamos,...

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5 nipy: pbrain

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8 basemap toolkit (courtesy of NOAA)‏

9 SIAM CSE 2009 cylindrical equidistant, mercator, lambert conformal conic, lambert azimuthal equal area, albers equal area conic and stereographic. basemap toolkit

10 SIAM CSE 2009 finance demo

11 SIAM CSE 2009 Hubble Space Telescope (courtesy of STScI)‏

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14 matplotlib 3 ways embedding in a webserver or GUI (Tk, GTK, WX, Cocoa, Qt, FLTK)‏ production scripting interactive shell (pylab / pyplot)‏

15 SIAM CSE 2009 matplotlib API from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas from matplotlib.figure import Figure fig = Figure()‏ canvas = FigureCanvas(fig)‏ ax = fig.add_subplot(111)‏ ax.plot([1,2,3]) a ax.set_title('hi mom')‏ ax.grid(True)‏ ax.set_xlabel('time')‏ ax.set_ylabel('volts')‏ fig.savefig('test')‏

16 SIAM CSE 2009 Copy the great architectures E Tufte

17 SIAM CSE 2009 pylab interface Plotting should just work Easy plots should be easy GUI / interactive complexity should be managed ipython to the rescue IPython 0.6.12_cvs -- An enhanced Interactive Python. ? -> Introduction to IPython's features. %magic -> Information about IPython's 'magic' % functions. help -> Python's own help system. object? -> Details about 'object'. ?object also works, ?? prints more. Welcome to pylab, a matplotlib-based Python environment help(matplotlib) -> generic matplotlib information help(pylab) -> matlab-compatible commands from matplotlib help(plotting) -> plotting commands In [1]: plot([1,2,3])‏

18 SIAM CSE 2009 interactive demo the interactive shell, rich data structures, numpy arrays, pylab mode rich text support, what you see is what you get, mathtext event handling, GUI embedding website - sphinx

19 SIAM CSE 2009 bar demo

20 SIAM CSE 2009 stacked bar

21 SIAM CSE 2009 pie demo

22 SIAM CSE 2009 subplot demo

23 SIAM CSE 2009 axes demo

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25 scatter demo

26 SIAM CSE 2009 legend demo

27 SIAM CSE 2009 histogram demo

28 SIAM CSE 2009 log demo

29 SIAM CSE 2009 polar demo

30 SIAM CSE 2009 text alignment

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32 matplotlib screenshot TeX support

33 SIAM CSE 2009 layer image

34 SIAM CSE 2009 Other visualization tools (and what they excel at)‏ Enthought chaco: fast real time plotting and highly interactive figures VTK / tVTK / mayavi2: 3D viz PyX : high powered, full featured Postscript and TeX integration PIL: image manipulation

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36 backends

37 SIAM CSE 2009 Fits your brain: “hello world” in 4 languages

38 SIAM CSE 2009 Third party libraries

39 SIAM CSE 2009 Fits your brain (part II): But I think this is the python