[Paraview] Contour from Table - how?

[Berk Geveci]

I think Delaunay 2D will be useful. There are better ways of doing it
but this should get you started.

> I will try the Delaunay filter but need a way to script these data
> views and to compare the results over multiple SQLite files - can
> Paraview accomplish this?

Definitely. Using the Python scripting support, you can do this pretty easily.

-berk

On Sun, Mar 15, 2009 at 10:44 PM, Steven Janzou <sjanzou at gmail.com> wrote:
> Berk,
>
> I am trying to construct a 24 (hour) by 365 (days) plot of energy
> values generated from a simulation and stored in SQLite.
>
> The query that constructs a data table with the the three columns for
> plotting is:
>
> select  [hour],(([Month]-1)*31+ [day]) as y, variablevalue
> from reportmeterdata rmd join timeindices ti on
> rmd.timeindex=ti.timeindex
> where recordindex=157
> group by [month],[day],[hour]
>
> This is used in the SQLDatabaseTableSource plugin and construct a
> table with the [hour], y and variableValue columns from the database -
> the plugin adds the idType fourth column.
>
> Then I use a TableToPoints filter to construct a Polygonal Mesh with 1
> cell with the correct X range (=[hour]), Y range (=y in query above)
> and variableValues from the query.
>
> I then try to construct a contour using the variableValue but that is
> not an option in the "Contour By" property of the Contour filter.
>
> I will try the Delaunay filter but need a way to script these data
> views and to compare the results over multiple SQLite files - can
> Paraview accomplish this?
>
> Thanks,
> Steve
>
> On Sun, Mar 15, 2009 at 5:49 PM, Berk Geveci <berk.geveci at kitware.com> wrote:
>> What kind of dataset is this and which variable are you contouring by?
>> Before you can contour a dataset, you have to create cells (triangles,
>> quads, tetrahedras etc.) so that VTK has a way of interpolating values
>> over the area/volume. You can do this by using one of the Delaunay
>> filters but the solutions may be more straightforward and efficient if
>> the dataset is actually in some way structured.
>>
>> -berk
>>
>> On Sun, Mar 15, 2009 at 8:25 AM, Steven Janzou <sjanzou at gmail.com> wrote:
>>> I have used the latest CVS version with Overview build and used the
>>> SQLDatabaseSource plugin to generate a table with four columns - 3
>>> data (x int, y int, z float) and one idtype
>>>
>>> I would like to construct a contour plot using the resulting table data.
>>>
>>> I have ran the Table data through the TableToPoints filter and
>>> generated a Polygonal Mesh with 1 cell and then applied the Contour
>>> filter to the TableToPoints results but have no selection available in
>>> the "Contour By" drop down.
>>>
>>> What do I need to do to construct a contour from the Table?
>>>
>>> Also, can I use lookmarks to compare several different sqlite source
>>> files with the contour plot?
>>>
>>> Thanks,
>>> Steve
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>