gmane.comp.python.enthought.devel

Traits-aware Sphinx

Phil Thompson — 2008-12-01T14:13:49

Was any progress made with making Sphinx traits-aware? What's the current state? Thanks, Phil

Specifying colors for a mesh

Anne Archibald — 2008-12-01T04:46:16

This seems like a terribly obvious question, but I have had no luck finding instructions on how to do it in the documentation: Can I specify my own colors for a mesh? That is, I have an RGB value for each point. The color= keyword argument appears to require specifically a single tuple. If this is for some reason impossible, can I supply my own colormap? In fact the colors are obtained from temperatures using a blackbody curve, so I could easily produce a look-up table to use. But it appears that I can only pass in the name of an existing look-up table. I've been using the mlab interface, because that's what's documented on the web. I'm also using version 2.2.0 because that's what's in Ubuntu Intrepid. Thanks, Anne

Installing ETS-3.0.3 in Sage

Jaap Spies — 2008-11-30T19:47:05

Trying to do a source install of ETS-3.0.3 in Sage-3.2.1.rc0. Mayavi2 is doing well, but chaco fails to run. Some time ago there was a thread on this list with comparable problems with chaco installed on debian. The resolution was to say at least, rather the debian way. I'm using Fedora 9 and Fedora 10. Let me try to explain what I do: I install the following experimental Sage packages: pyrex-0.9.4.1.spkg (not needed under linux?) swig-1.3.31.spkg vtk-5.2.spkg wxPython-2.8.9.1.spkg pil-1.1.6 Reportlab_2_2 in order to meet the external dependencies. I grab the sources from svn with ets co ETS, etcetera. put in egg_builder.py run a install script: No errors: Mayvi2 is working as expected (thanks Prabhu!). The examples in Chaco_3.0.1 fail: Any thoughts? Jaap

mayavi problem in EPD py25-4.0.30002

Robert Cimrman — 2008-11-27T15:54:28

Hi (Prabhu), I am trying to run mayavi in EPD py25-4.0.30002 on windows XP. The examples without the GUI work fine, the examples showing the splash screen fail with the traceback below. (sorry for the messed output, I am testing it on another computer and got it by e-mail this way.) r. > pythonw -u "streamline.py" Traceback (most recent call last): File "streamline.py", line 70, in main() File "C:Program FilesPython25libsite-packagesmayavi-3.0.3-py2.5-win32.eggenthoughtmayaviscriptsmayavi2.py", line 572, in wrapper m.main() File "C:Program FilesPython25libsite-packagesmayavi-3.0.3-py2.5-win32.eggenthoughtmayavipluginsapp.py", line 167, in main self.setup_logger() File "C:Program FilesPython25libsite-packagesmayavi-3.0.3-py2.5-win32.eggenthoughtmayavipluginsapp.py", line 174, in setup_logger setup_logger(logger, 'mayavi.log', mode=self.log_mode) File "C:Program FilesPython25libsite-packagesmayavi-3.0.3-py2.5-win32.eggenthoughtmayavipluginsapp.py", li

pygtk

Karsten W. Jacobsen — 2008-11-27T14:58:42

Dear enthought-dev. Does anybody know how to get gtk to work with the python in EPD on MacOS X? Using macports one can get a python including gtk but I hope it will be easy to get gtk to work with EPD-python since it has so many other nice packages included. Are there any plans of including gtk in EPD? Thanks. Karsten.

Getting a pyglet window w/ Enable

Dav Clark — 2008-11-25T21:22:50

Architecture question: I would like to have a stimulus presentation screen for running behavioral experiments, as well as an "experimenter console" screen with oscilloscope type display of the response apparatus outputs. What would be the best way to do this? Some ideas: - Create all pyglet contexts from Enable, handing a window off to the stimulus presentation logic. - Create windows in pyglet, and pass one (physical) screen along to Enable (or Chaco). One difficulty arises from how the event loop will manage these things... I need to have very precise control over the stimulus presentation window (frame-by-frame) as well as accurate registration of the responses. This would be OpenGL rendering stuff (probably using some derivation of VisionEgg). The Chaco updating could be handled simply by updating a Trait, and doesn't need to be nearly so frame-by-frame accurate. I plan to start playing with this over the weekend, so if I get something done before I get an answer, I'll chim

split processing pipeline (filters) in the code

Yaroslav Halchenko — 2008-11-24T19:23:47

I am trying to accomplish a very simple mission, but I fail to do that in code (I can move this in the GUIsh tree), could anyone help me out? So, I want to have /-> ImageFourierCenter -> some modules to visualize data -> FFT -> Filter -> RFFT -> more processing The thing is that I can't manage to say that both RFFT and ImageFourierCenter be on the same "level" to get input from the Filter (like in mv-pipe2.png). I tried to alter it by changing .inputs .outputs but it has no effect (result is in mv-pipe1.png) in the visual flow displayed by mayavi2. Here is relevant snippet of code: fft = UserDefined(filter=tvtk.ImageFFT(), name='FFT') fft.filter.dimensionality = 3 rfft = UserDefined(filter=tvtk.ImageRFFT(), name='rFFT') cfourier = UserDefined(filter=tvtk.ImageFourierCenter(), name='FourierCenter') ffilter = UserDefined(filter=tvtk.ImageButterworthLowPass(),

Simple Chaco Question

2008-11-24T15:18:14

Hello everyone, I'm looking at the Chaco documentation and doing some tests. I would appreciate if someone could have a look at this code and tell me why "axis_line_weight" and "axis_line_visible" only update when "index_range_value" does? Run the code and play with the values of the three variables at the bottom of the GUI and you'll understand what I mean. Regards, Sylvain from enthought.traits.ui.api import View, Item from enthought.traits.api \ import HasTraits, Instance, Bool, Range, on_trait_change from enthought.chaco.api import ArrayPlotData from enthought.chaco.plot import Plot from enthought.enable.component_editor import ComponentEditor from numpy import * from scipy import * class PlotTest(HasTraits): plot = Instance(Plot) index_range_value = Range(low=0.,high=100.,value=20.) axis_line_weight = Range(low=0.,high=20.,value=6.) axis_line_visible = Bool(True) traits_view = View( Item('plot', editor=ComponentEditor(), show_label=True), Item('index_rang

mayavi2 Surface() vs Vectors() origin

Andrew Straw — 2008-11-23T22:42:02

Hi, this is a mayavi2 newbie question. I'm trying to plot some lines specified by:: pd = tvtk.PolyData(points=points, lines=lines) Then I do:: e.add_source( VTKDataSource(data=pd,name='my lines') ) Now, if I show the vertices using Vectors(), all is well, except that I really want to plot the lines:: v = Vectors() v.glyph.scale_mode = 'data_scaling_off' v.glyph.glyph_source = tvtk.SphereSource(radius=.02) e.add_module(v) To plot lines, I have tried the following instead of the above 4 lines. This works, in that it plot lines with an appearance I like, but now the data are plotted with a translational offset of about (-1,0,0) (the scale and rotation are fine):: s = Surface() e.add_module(s) This translational offset is relative to other data I have already plotted in the scene with another source and another module (Vectors). So, my question is, why do the data plotted by Surface and Vectors have different origins? How can I make my Surface plot with the same origin as my Vectors? I

Font Problems

James Pruitt — 2008-11-23T21:08:37

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Mayavi feature request

Ross Harder — 2008-11-23T04:39:58

Hi We've been using Mayavi2 for a couple of weeks now, out of the EPD. Really getting spoiled by it! One feature we miss from mayavi 1.5 was the picker keeping a list of the picked points. We use the picker all the time in our work and miss the way mayavi 1.5 displayed the points in a list that we could scroll back through. Ross

Mac OS install from eggs

Ross Harder — 2008-11-23T04:08:17

I've had no luck installing ETS from eggs below is a chronicle of my experience. easy_install -f http://code.enthought.com/enstaller/eggs/macosx/10.5 "ets[nonets]==2.7.1" as it tells me to do on https://svn.enthought.com/enthought/wiki/Install/ETS_2.7.1/Py2.5/MacOS_10.5_x86_64 ######################################### When I start, the site-packages dir contains Pyrex-0.9.8.5-py2.5.egg README VTK-5.3.0-py2.5.egg easy-install.pth matplotlib-0.98.3-py2.5-macosx-10.3-i386.egg numpy-1.3.0.dev5934-py2.5-macosx-10.3-i386.egg scipy-0.7.0.dev4645-py2.5-macosx-10.3-i386.egg setuptools-0.6c9-py2.5.egg setuptools-0.6c9dev_r66750-py2.5.egg setuptools.pth vtkPipeline wxredirect.pth maybe a few things left over from previous attempts. ####################################### It chugs away for a while and stalls on Installed /Library/Python/2.5/site-packages/enthought.tvtk-2.1.0-py2.5-macosx-10.5-i386.egg error: Could not find required distribution enthought.kiva[nonets] It seems to be installing a lot of packages fr

Another simple traits question

Alan Jackson — 2008-11-21T20:23:29

I'm trying to build a product that has a set of help items under a help menu. I've been trying to figure out how to get HelpAction to work, since that *seems* like the right thing to do, but I have so far come up short. Does anyone have an example of setting up popup help off a help menu, or of using HelpAction? I've been surprised that extensive googling hasn't turned up anything. Thanks! - Alan

Cannot save Mayavi scene + cutting with a 3D surface

Marcos — 2008-11-21T19:09:14

Hi, When running the Mayavi2 application I have not been able to save the Visualization so that I can work on it later. After I have given it a filename and I click on ok go continue, it raises an exception which has to do with apptools-3.0.0-py2.5.egg\enthought...\state_pickler.py line 379 in _do_instance state= value._getstate_() Typeerror: unbound method _getstate_() must be called with InstanceChoice instance as first argument got nothing instead Different query altogether. In archaeology we identify boundary layers as representing different geomorphological episodes (different episodes or erosion and/or deposition). I was wondering if it would be possible to 'cut' a volume (i.e. cut either a structured points or grid) with an interpolated surface and see the filled contours the same way that we are able to do this using a scalar cut plane.The idea is that I would have a set of 3D points that would define one of these boundary layers and that I would interpolate in order to create a 3D surface. I

Updating a Range slider

David Fokkema — 2008-11-20T22:52:44

Hi all, Another question: my application needs to allow users to select a date. Since I can't find a nice Date Trait (although python has a class and the used gui backends all have nice selector widgets, as far as I know) I need to construct my own. My minimal example: from enthought.traits.api import HasTraits, Enum, Range, on_trait_change from enthought.traits.ui.api import View, Item from datetime import date, timedelta from calendar import month_name, monthrange class Date(HasTraits): year = Enum(range(2004, date.today().year+1)) month = Enum(month_name[1:]) day = Range(1, 31) def __init__(self): super(Date, self).__init__() yesterday = date.today() - timedelta(days=1) self.year = yesterday.year self.month = month_name[yesterday.month] self.day = yesterday.day def num_month(self): return month_name[:].index(self.month) < at >on_trait_change('year, month') def calc_number_of_days(self): days = monthrange(self.year, sel

How to rebuild debian packages from source for yourarchitecture

Varun Hiremath — 2008-11-20T19:11:19

Hi all, I wrote this mail sometime back to Fred, explaining him the steps involved in rebuilding a debian package from source. I thought it might be helpful for others also, so I'm mailing this to the list. HTH, -Varun On Sun, 28 Sep, 2008 at 06:34:00PM -0400, Varun Hiremath wrote: | > | > 1) $$ apt-get install build-essential | > 2) The sources are available on my repo, so add this line to | > sources.list: | > deb-src http://newpeople.debian.org/~varun/ ./ | > | > 3) $$ apt-get update | > 4) Lets say you want to build python-chaco then run this: | > $$ apt-get source python-chaco | > 5) You should get 3 files - .dsc, .diff and .tar and an unpacked | > folder "python-chaco-3.0.0" in the current working directory. | > 6) $$ cd python-chaco-3.0.0 | > 7) $$ dpkg-buildpackage -uc -us | > 8) After this you should have the i386 deb and i386 changes file in | > the parent directory. | >

Can't select items in Envisage workbench combo box

Jed Frechette — 2008-11-20T18:15:48

When running (some) Envisage workbench applications I can't select items from combo boxes on OS X. For example in the Lorenz example I can't change the type of output plot that is displayed. Selecting the combo box drops down the list of available options but clicking on one simply closes the combo with no other effect. I have only observed this on OS X. ETS 3.0.2 and supporting libs were installed via EPD (Python 2.5.2 and wx 2.8.7.1). Testing on a Debian box with the same software versions did not expose the bug. In addition to the Lorenz example I have also seen the behaviour in another workbench app. In contrast Mayavi works fine as do the various Traits UI demos that use combo boxes. Could this be a bug in how Lorenz is setup? I haven't installed trunk recently and can't seem to get it to build on my Mac at the moment so I haven't tested the latest and greatest. Any chance this is a known issue and/or has been fixed? I couldn't find anything obviously relevent in the tracker

problem with easy_install ETS

2008-11-20T12:29:34

Mary Lou, I also try to install ets 3.0.2 on a Windows XP and run into the same problems. I created the file "C:\Python25\lib\distutils\distutils.cfg" that contains: [build] compiler=mingw32 I tried easy_install and got a sandbox error. I ran it again and got: ImportError: no module named vtk. I'll try to fix that. If you're more successful than me, please let me know. Cheers, Sylvain

How to quote mayavi2 in publications?

Lorenzo Isella — 2008-11-20T09:51:00

Dear All, I think that the email title says it all: how am I supposed to quote mayavi2 in a publication? Cheers Lorenzo

traits/chaco struggle

Alan Jackson — 2008-11-19T22:44:38

I feel like I must be really close, but I must be missing something really simple. This rather long example has a traits enabled menu that changes the x-y coordinates of a rectangle as the rotation angle of it is changed. For reasons I can't fathom, the drawing bit of the program isn't getting the signal that the coordinates have changed, so I'm not getting a redraw. What am I missing? Are my handlers incomplete? ------------------------------ #!/usr/bin/python # Standard library imports from optparse import OptionParser import sys import string import numpy as np from enthought.enable.component_editor import ComponentEditor from enthought.traits.api import HasTraits, CFloat, CInt, Property, Instance, Enum, Event from enthought.traits.ui.api import View, Item, VGroup, HGroup, Label, Group, Handler from enthought.traits.ui.menu import Action, CloseAction, Menu, \ MenuBar, NoButtons, Separator, OKCancelButtons # Chaco imports from enthought.chaco.api import ArrayData

easy_install ETS[nonets]

2008-11-19T20:52:12

Hello, I've been programming on Python with ets for some time. I currently have ets-2.2.0 on Windows XP. I would like to install ets3.0.2. My first concern is: what will happen with ets2.2.0 in the site-packages? Will it get updated or should I remove anything before installing ets3.0.2? I gave a try with the installation, following the instruction given on the website. I first deleted my previous version of setuptool and got the new one, which gives me easy_install. I then install all the prerequisites mentioned on Enthought Installation Home Page. Hopefully, I did it right. I then gave a try with easy_install ets[nonets] and didn't get really far. Here is what I got: C:\Python25>easy_install ETS[nonets] C:\Python25\Scripts\easy_install-script.py:5: UserWarning: Module site was alrea dy imported from C:\Python25\lib\site.pyc, but c:\python25\lib\site-packages is being added to sys.path from pkg_resources import load_entry_point Searching for ETS[nonets] Traceback (most recent call last): File "C:\Pyt