[Paraview] vtkTable and LineChart

[Michael Jackson]

Thanks for more info.

   I do in fact have "Time" for one of my plots so that is easy to  
achieve. I just had to correctly set the name of the column from "Time  
Values" to "Time" and that should work. The other plots probably are  
more difficult at this point. I have Stress/Strain data where I need  
the Stress on the x-axis and strain on the y-axis. I do not think I am  
understanding how to set some value on the vtkTable class that when  
finally passed over to the GUI layer will set the some arbitrary  
column as the x-axis. I thought the proxy stuff was all done on the  
GUI side of things? I guess I need just a bit more hand holding.
___________________________________________________________
Mike Jackson                      www.bluequartz.net
Principal Software Engineer       mike.jackson at bluequartz.net
BlueQuartz Software               Dayton, Ohio



On Nov 29, 2010, at 4:31 PM, Marcus D. Hanwell wrote:

> Sorry, yes, I was in VTK world. There are a few column names with
> special meanings to ParaView that are hard coded in the proxy. You can
> get at the chart object if you wish to manipulate it directly, but you
> should be able to achieve everything you need to through the proxies.
>
> Marcus
>
> On Mon, Nov 29, 2010 at 4:28 PM, pat marion <pat.marion at kitware.com>  
> wrote:
>> I think by default it will plot a line for each column in the  
>> table.  It
>> will use the cell value as the Y value, and the row index as the X  
>> value.
>> To change the behavior, you have to change two representation  
>> properties:
>>
>>
>> rep.UseIndexForXAxis = 0
>>
>> rep.XArrayName = 'foo'
>>
>> This will plot all all the columns, except use the "foo" column as  
>> the X
>> values.  That means the line for the "foo" column is still  
>> displayed, and it
>> will be a diagonal line.
>>
>> I just looked, and Paraview has one cheat hard coded- if there is a  
>> column
>> named "Time" or "arc_length" then it will be used automatically for  
>> the X
>> axis.
>>
>> Pat
>>
>> On Mon, Nov 29, 2010 at 4:11 PM, Michael Jackson
>> <mike.jackson at bluequartz.net> wrote:
>>>
>>> Thanks for the idea. I was trying to figure out the flow from  
>>> reading the
>>> data into displaying the data hoping to reveal some sort of  
>>> default or
>>> something. I was going to generate some fake CSV data and see how  
>>> that
>>> reader does things hoping the CSV reader takes the first column as  
>>> the
>>> x-axis.
>>> ___________________________________________________________
>>> Mike Jackson                      www.bluequartz.net
>>> Principal Software Engineer       mike.jackson at bluequartz.net
>>> BlueQuartz Software               Dayton, Ohio
>>>
>>>
>>>
>>> On Nov 29, 2010, at 4:08 PM, pat marion wrote:
>>>
>>>> Hi Mike,
>>>>
>>>> I'm not up to speed with the current chart api so I can't answer  
>>>> your
>>>> question... but maybe you could try doing it in the gui with  
>>>> python trace
>>>> enabled, then translate the generated python code into c++ for  
>>>> your plugin?
>>>>  Customizing the chart should be a matter of setting properties  
>>>> on the
>>>> representation and view, the data object itself doesn't have much  
>>>> say.
>>>>
>>>> Pat
>>>>
>>>> On Mon, Nov 29, 2010 at 1:41 PM, Michael Jackson
>>>> <mike.jackson at bluequartz.net> wrote:
>>>> I have some XY data that I would like to plot in ParaView. I  
>>>> currently
>>>> have a plugin that reads the data from our HDF5 file and into  
>>>> vtkTable
>>>> objects. Along the lines of a "Line Chart 101" question how do I
>>>> programmatically set the x-axis and y-axis columns?
>>>>
>>>> Thanks
>>>> ___________________________________________________________
>>>> Mike Jackson                      www.bluequartz.net
>>>> Principal Software Engineer       mike.jackson at bluequartz.net
>>>> BlueQuartz Software               Dayton, Ohio
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>
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>>
>>
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>>
>> Visit other Kitware open-source projects at
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