[Paraview] Equally spaced points on a slice (for the streamlines)

[kenichiro yoshimi]

Hi  Andrew,

Would you try to apply the set of filters with Smooth, Subdivide and
Mask Points to a slice surface? The smoothing process helps to secure
an evenly distribution of points on a slice.

Thanks

2017-11-22 21:17 GMT+09:00 Andrew <antech777 at gmail.com>:
> Hello.
> Sorry for being so slow, got lots of work with reports...
> Just tried Mandelbrot filter applied to a slice. With defaults, it created a
> kind of fractal rotated and translated relative to original slice. Should I
> use some particular settings to just resample? Also, tried Wavelet and
> Gaussian resample. These filters create volumes being appliet to the slice
> so it seems that they doesnt fit my needs. Any suggestions? Is there some
> simple filter to resample arbitrary surface in ParaView.
> Thanks for your attention. (Now I use Mask Points with the same problem of
> un-even point distribution, the best results are with Random sampling +
> randomised ID strides, but without limiting the maximum number of points;
> instead of this limit I preview points with glyphs and then feed these point
> to the Stream tracer with custom source)
>
> 2017-10-25 9:41 GMT+03:00 Andrew <antech777 at gmail.com>:
>>
>> Hello, sorry for being late.
>> The slice may be oriented arbitrary, it may be not a flat but cylinder
>> slice e.t.c. But often I need just axis-aligned slices. Thanks for
>> suggestion about sources.
>>
>> 2017-10-23 18:03 GMT+03:00 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>:
>>>
>>> Is the slice axis aligned? If so, you can use a regular source eg.
>>> Wavelet or Mandlebrot to generate the evenly spaced points by setting the
>>> extents appropriately.
>>>
>>> Utkarsh
>>>
>>> On Mon, Oct 23, 2017 at 2:41 AM, Andrew <antech777 at gmail.com> wrote:
>>>>
>>>> Hello.
>>>> I need to distribute points on a slice equally to start streamlines from
>>>> these points. The problem is that the Mask Points filter seems to not to
>>>> have such option. I tried all combinations of randomizing in this filter but
>>>> the problem persist. My mesh is unstructured tetra with inflation layers on
>>>> wall so there are lots of cells (points) at the wall and almost all
>>>> streamlines start in near-wall region while I need their starting points to
>>>> be equally distributed along the slice. Is there a way to do it in ParaView?
>>>> Thanks for attention...
>>>>
>>>> _______________________________________________
>>>> Powered by www.kitware.com
>>>>
>>>> Visit other Kitware open-source projects at
>>>> http://www.kitware.com/opensource/opensource.html
>>>>
>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>> http://paraview.org/Wiki/ParaView
>>>>
>>>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>>>
>>>> Follow this link to subscribe/unsubscribe:
>>>> http://public.kitware.com/mailman/listinfo/paraview
>>>>
>>>
>>
>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
>