[Paraview] Volumes of Interest

[Berk Geveci]

Can someone add a feature request in the bug tracker? Utkarsh: should we
shoot for 3.8 or 4.0?

On Thu, Feb 18, 2010 at 2:07 PM, pat marion <pat.marion at kitware.com> wrote:

> If you set a variable in the paraview python console before running a
> script, the script will have access to that variable.  So you can pass
> arguments to a python script by just setting sys.argv in the python console
> before running the script.
>
> Sean... I happen to have a patch that allows raw_input() to work from the
> paraview gui.  Patch is attached.  When the script calls raw_input() it
> causes a focused qt text entry box to appear at the cursor.  The entire
> paraview gui is blocked until the user hits enter.  Not perfectly elegant,
> but works pretty well.
>
> The pvblot plugin I wrote makes extensive use of querying the user for
> input from the gui.  I decided not to use raw_input() because it blocks the
> gui.  Instead I cooked up a fancy asynchronous input scheme using python
> generators, decorators, and the yield statement.  It works really well, but
> requires that you write your script using yield instead of raw_input().
>
> Berk, I think we could add a method to the paraview.simple module that does
> a callback to the gui for a file dialog, it would be similar to my attached
> raw_input() patch.
>
> Pat
>
>
> On Thu, Feb 18, 2010 at 12:27 PM, Sean Ziegeler <
> sean.ziegeler at nrlssc.navy.mil> wrote:
>
>> Actually, that isn't a bad idea.  There doesn't seem to be a way of
>> getting input to a Python script, as raw_input() doesn't appear to work in
>> the Python Shell (in the PV GUI, at least) either.
>>
>>
>> On 02/18/10 08:19, Berk Geveci wrote:
>>
>>> I didn't mention Python because it doesn't give you a way of popping up
>>> a file chooser - you have to edit the script and change the file name.
>>> Maybe we should add a Python command to pop up the file chooser... It is
>>> not super easy but if there is enough demand, we can do it. Feel free to
>>> add a feature request to the bug tracker or uservoice.
>>>
>>> -berk
>>>
>>> On Thu, Feb 18, 2010 at 8:06 AM, Jean M. Favre <jfavre at cscs.ch
>>> <mailto:jfavre at cscs.ch>> wrote:
>>>
>>>    Natalie Happenhofer wrote:
>>>     > Another topic - selecting volumes of interest: I can do that for
>>>    one file, and it works well. But is it really necessary to repeat
>>>    this procedure for every file I open in Paraview? Is it possible to
>>>    select a volume of interest and for every file I open afterward,
>>>    just this VoI is displayed?
>>>     >
>>>     >
>>>    I would suggest doing this in Python in order to avoid reading the
>>> full
>>>    resolution dataset by default. When opening a file, paraview forces
>>> you
>>>    to click Apply before you can do anything else (such as creating an
>>>    Extract Subset filter). Thus, the data reader uses
>>>    UPDATE_EXTENT=WHOLE_EXTENT and you may run out of memory before being
>>>    able to subset the grid.
>>>
>>>    if instead, you instantiate your reader, do not execute it, do not
>>>    create a representation for it, then create an Extract Subset with the
>>>    VOI you desire, and then execute the whole thing, you will end-up
>>>    passing the VOI extents upstream directly to the reader, and your
>>> reader
>>>    will only execute once with the correct extents.
>>>
>>>    Use the python shell and the followin example:
>>>
>>>    reader = XMLImageDataReader( FileName= '/path/to/data/foo.vti'] )
>>>    reader.PointArrayStatus = ['data1']
>>>
>>>    ExtractSubset1 = ExtractSubset()
>>>
>>>    ExtractSubset1.VOI = [2000, 2255, 2000, 2255, 2000, 2255]
>>>
>>>    DataRepresentation2 = Show(ExtractSubset1)
>>>
>>>    Render()
>>>
>>>    Jean--
>>>    Swiss National Supercomputing Center
>>>    _______________________________________________
>>>    Powered by www.kitware.com <http://www.kitware.com>
>>>
>>>
>>>    Visit other Kitware open-source projects at
>>>    http://www.kitware.com/opensource/opensource.html
>>>
>>>    Please keep messages on-topic and check the ParaView Wiki at:
>>>    http://paraview.org/Wiki/ParaView
>>>
>>>    Follow this link to subscribe/unsubscribe:
>>>    http://www.paraview.org/mailman/listinfo/paraview
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the ParaView Wiki at:
>>> http://paraview.org/Wiki/ParaView
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.paraview.org/mailman/listinfo/paraview
>>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.paraview.org/pipermail/paraview/attachments/20100218/b7bed5f8/attachment-0001.htm>