dolfin team mailing list archive

[Ola Skavhaug <skavhaug@xxxxxxxxx>]

On Wed, Aug 12, 2009 at 6:13 PM, Anders Logg<logg@xxxxxxxxx> wrote:
> It might be something with the call to SetVoidArray in make_vtk_grid
> in viper.py. Commenting out the line
>
>  ita.SetVoidArray(a, len(a), 1)
>
> it does not crash anymore and I get a plot, but the plot is empty.
>
> Ola?

As long as a is not lost afterwards (i.e. a reference is kept) this
should be correct.

Ola

> --
> Anders
>
>
> On Tue, Aug 11, 2009 at 05:30:18PM -0400, Shawn Walker wrote:
>> That fits with the error I got when I tried to run the Stokes demo.
>> It plotted the vector velocity with no problem.  But when it tried
>> to plot the pressure, it gave me that error.
>>
>> I've tried googling about the error, but I could not find anything
>> definitive.
>>
>> - Shawn
>>
>> On Tue, 11 Aug 2009, Anders Logg wrote:
>>
>> >On Tue, Aug 11, 2009 at 09:26:13PM +0200, Anders Logg wrote:
>> >>Yet another update: Same problem with VTK 5.4 and I can use VTK from
>> >>Python directly without problem (when not going through Viper).
>> >
>> >The plot thickens. I can plot vector-valued functions with Viper but
>> >not scalars, and not meshes. In particular, I can do
>> >
>> > plot(grad(u))
>> >
>> >in the Poisson demo, but not
>> >
>> > plot(u)
>> >
>
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-- 
Ola Skavhaug