yt-users August 2008

yt-users@python.org

1 participants
3 discussions

iyt, IPython
by Matthew Turk 27 Aug '08

27 Aug '08

Hi guys, Earlier today Jeff Oishi committed a script called 'iyt' to trunk/scripts/ . If you've got IPython (http://ipython.scipy.org/) installed and you run iyt, it will load up an IPython session with the appropriate threading necessary to access the 'pylab' interface to Matplotlib, as well as all the yt modules pre-imported and in the current namespace. This, combined with the PlotCollectionInteractive object, simplify interactive exploration of data significantly. (IPython is pretty sweet -- I bet Jeff has some great tips; I'm not an expert on it.) If you're on branches/yt-1.0 , it'll be committed over there after it gets tested a bit. -Matt

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New means of simple interaction
by Matthew Turk 22 Aug '08

22 Aug '08

Hi guys, Are you tired of having to include lots of boilerplate code in your python scripts? I've committed a change (r737) in trunk/ that should help cut down on this -- but might also make things significantly more terse! The idea has long been that there were standard workflows in yt -- generating static outputs, adding these to plot collections, and making plots. These are now accessible from a pipe-like interface. For example: >>> from yt.mods import * >>> pf = "galaxy1200" | static >>> pf | slicer >>> pf | slicer(field="Temperature", width=(1.0,'kpc')) >>> pf | slicer_y(field="H2I_Fraction", width=(1.0,'au')) >>> pf | projector(field="Density", width=(1.0,'kpc'), name='hiya') or if you want to be ultra terse, forget the pf part: >>> from yt.mods import * >>> "galaxy1200" | slicer >>> pf | projector(field="Temperature", weight_field="Density", width=(1.0,'kpc'), name='hiya') I'm thinking about adding some more of these -- for contour finding among other things -- and using iterators to speed this whole workflow up. Let me know if you like this, or if there are problems, or whatever! There are likely some bugs, but I've run a bunch of tests and it seems to work. -Matt

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Reason improvement
by Matthew Turk 04 Aug '08

04 Aug '08

Greetings, Just a note -- in revision 719 -- I've committed a fix for the GUI component (reason) that was causing huge and inappropriate delays to projecting a dataset, if that dataset had more than about 10,000 grids. The GUI was updating every time a new grid was masked and examined, which was oftentimes many times more than once per second. It should be working now. Fixes have been committed to both trunk/ and branches/yt-1.0 . -Matt

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yt-users August 2008