Yes, I can see the data in ParaView after I mess around digging in the
"Display" tab, clicking some checkbox, taking guess about what needs
to be enabled/disabled..
I was hoping my use-case would fall into the "Default" use case
where the first column represented the x-axis and subsequent columns
were y-axis values but I guess not this time. Yes, I agree that it
does only take a few clicks here and there but you first have to know
_what_ to click which is where the user experience is falling apart
for me. I have to teach a bunch of users to click here and there in
order to show their data.
Along those lines maybe I am not really understanding how a "Line
Chart" works. Maybe what I am really after is an "XY Scatter Plot" of
my data?
What would help me out would be what source file is the default
value of using the cell indices as the x-axis set? for my builds which
I distribute to my users maybe I can just set this to the other value
"Use Data Array" instead?
Thanks
___________________________________________________________
Mike Jackson www.bluequartz.net
Principal Software Engineer [email protected]
BlueQuartz Software Dayton, Ohio
On Nov 29, 2010, at 5:15 PM, pat marion wrote:
That's correct, the data objects at the vtk level cannot influence
how the chart will be displayed. It all happens in the gui &
servermanager level, at the proxy level. Are you at least able to
see your data in the XY Line Chart? It only takes two clicks in the
Display tab to assign the X axis.
It would be convenient if there was some way for the data object to
provide a hint to gui. Maybe we could make a rule that if an array
name ends with "xaxis_hint" or something, that could clue the gui to
use it automatically.
Pat
On Mon, Nov 29, 2010 at 4:47 PM, Michael Jackson <[email protected]
> wrote:
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 [email protected]
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 <[email protected]>
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
<[email protected]> 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 [email protected]
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
<[email protected]> 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 [email protected]
BlueQuartz Software Dayton, Ohio
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Please keep messages on-topic and check the ParaView Wiki at:
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