[Paraview] JavaScript API - ParaViewWeb - how to call function

Tue May 15 12:05:04 EDT 2012

Using directly a VTK class on the python layer does not make it a
proxy... You need to stick to the ParaView proxy that are defined
inside the XML.

OpenDataFile should be the correct method to call. Try to debug your
script inside the Python shell of ParaView to see why it is
complaining for.
And once your python is OK, then use it inside ParaViewWeb...

Seb

On Tue, May 15, 2012 at 9:58 AM, Tuan Ha Tran <tuan-ha.tran at insa-lyon.fr> wrote:
> Thank you Seb,
> I tried to use OpenDataFile() in the simple.py but I think that it's not the
> right reader to use (it weird because the comment say that OpenDataFile will
> search for the right reader).
> Now I want to use MetaFileSeriesReader('fileName'), a reader of VTK.
> So I write a loadFile.py as followed
>
>
> from paraview.simple import *
> from paraview import vtk
>
>
> def MetaImageReader(file):
>     return vtk.vtkMetaFileSeriesReader('/home/thtran/'+file);
> I tried return vtk.vtkMetaFileSeriesReader ... as well as return
> vtk.MetaFilSeriesReader
> but always Uncaught 'module' object has no attribute 'MetaFileSeriesReader'
>
> I think that the proxy I provided is wrong. but I don't have any idea about
> how it'll be.
> Do you have any idea?
> Thank you in advance
>
>
>
>
>
> ----- Original Message -----
> From: Sebastien Jourdain <sebastien.jourdain at kitware.com>
> To: Tuan Ha Tran <tuan-ha.tran at insa-lyon.fr>
> Cc: paraview at paraview.org
> Sent: Tue, 15 May 2012 13:56:09 +0200 (CEST)
> Subject: Re: [Paraview] JavaScript API - ParaViewWeb - how to call function
>
> Hi Tuan,
>
> The 'missing' documentation that you are looking for is inside the
> appendix of http://paraview.org/Wiki/ParaView/Users_Guide/Table_Of_Contents
> under "List of ...".
> Those API's are defined by some XML files that describe all the
> ParaView proxies. ParaView does not use VTK class directly but instead
> use Proxy to abstract the location and distribution of the real VTK
> class instance.
>
> Regarding the plugin part, I was talking about ParaViewWeb plugin
> (Python), not ParaView plugin (XML/C++) but in any case you can use
> both if you need to.
>
> Moreover, depending on what you are doing you shouldn't need to use
> VTK classes directly and you should stick to the ParaView proxy
> paradigm.
>
> Seb
>
> On Tue, May 15, 2012 at 4:31 AM, Tuan Ha Tran wrote:
>> Thank you very much Seb,
>> I have another question : I read the simple.py and certainly, I found all
>> the function about rendering, read file, etc. but I didn't find out
>> anything
>> about all the filters.
>> So if a want to use these filter, in python and after, in javascript.
>> Where
>> can I find the header (to know how to use these functions - some files
>> like
>> simple.py)? Do I have to import the vtk Library or something like that so
>> we
>> can use them in ParaViewWeb?
>> About the plugin, I (suppose) write a plugin, with the .xml and .cxx file
>> (as instructed in the Wiki page), write .py file and place it into the
>> folder plugins of working-directory.
>> So, in the PWConsole, I suppose to load the plugin so it can be use in
>> PWConsole? I wonder if i'm right.
>> Thank you once more.
>>
>>
>>
>>
>> ----- Original Message -----
>> From: Sebastien Jourdain
>> To: Tuan Ha Tran
>> Cc: paraview at paraview.org
>> Sent: Mon, 14 May 2012 15:22:55 +0200 (CEST)
>> Subject: Re: [Paraview] JavaScript API - ParaViewWeb - how to call
>> function
>>
>> For that you will need to know the name of the ParaView Proxy. You can
>> find-out by using ParaView and the trace function.
>> Then by referring to
>> http://www.paraview.org/Wiki/What_is_the_full_JavaScript_API , you
>> should be able to convert the Python trace to a JavaScript code.
>> Moreover, if you use directly the JavaScript console of Firebug or
>> Chrome, you have the completions on the ParaView object.
>>
>> I think in your case you should write your code as follow:
>>
>> p = paraview();
>> var reader = plugin.load('myFile.mhd');
>> filter = p.Threshold( {proxy:reader} ); // The arg is optional as the
>> reader is currently active
>> representation = p.Show()
>> p.Render()
>>
>> Seb
>>
>> On Mon, May 14, 2012 at 5:27 AM, Tuan Ha Tran wrote:
>>> Hi everybody,
>>>     I have a question about the using of JavaScript API in ParaViewWeb.
>>>     I succeeded in loading a file using OpenDataFile via a plugin.
>>>
>>>   And now I want to apply a filter to my files.
>>>   When I tried to call, for example ImageThreshold
>>>
>>>   p = paraview();
>>>   var reader = plugin.load('myFile.mhd');    //I succeeded in loading
>>> this
>>> file
>>>   reader = p.ImageThreshold(reader);                    // it's here I
>>> want
>>> to apply a filter, but I have the followed error : Object # has no
>>
>>> method 'ImageThreshold'  I also tried with reader = p.vtkImageThreshold
>>> but
>>> the same error.
>>>
>>>   So I want to know how to call a ParaView function in JavaScript
>>> Terminal
>>> of PWConsole?
>>>   Thank in advance
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>