[Paraview] Attach arrows onto streamlines/stream tubes more smoothly

[Liang Wang]

Indeed, using Cone glyph gives much better results, and tweaking by
"Stride" is very helpful!

Thank you, Andy and Utkarsh.

On Wed, Mar 15, 2017 at 8:14 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> To control spacing of the glyphs, on the Glyph's properties panel you
> can change the Glyph Mode to "Every Nth Point" and then tweak the
> "Stride".
>
> On Wed, Mar 15, 2017 at 8:12 PM, Utkarsh Ayachit
> <utkarsh.ayachit at kitware.com> wrote:
> > Try changing the "Glyph Type" to Cone. See attached image.
> >
> > On Wed, Mar 15, 2017 at 6:16 PM, Andy Bauer <andy.bauer at kitware.com>
> wrote:
> >> I think it is because you have set the Shaft radius to 0. The start of
> the
> >> arrow doesn't appear because of this and I'm suspecting that the start
> of
> >> the arrow is centered along the streamline. Maybe try using using
> either a
> >> non-zero value for the Shaft radius that is bigger than the Tube radius
> or
> >> use the Cone glyph type instead.
> >>
> >> On Wed, Mar 15, 2017 at 5:59 PM, Liang Wang <frank0734 at gmail.com>
> wrote:
> >>>
> >>> Hi Andy,
> >>>
> >>> The results are similar if I apply glyph on streamlines directly (see
> the
> >>> attached image).
> >>>
> >>> I guess the difficulty part is that arrow heads are not easily
> centered on
> >>> lines/tubes?
> >>>
> >>> On Wed, Mar 15, 2017 at 5:50 PM, Andy Bauer <andy.bauer at kitware.com>
> >>> wrote:
> >>>>
> >>>> Hi,
> >>>>
> >>>> How does it look if you Glyph the streamlines themselves instead of
> the
> >>>> tubes?
> >>>>
> >>>> On Wed, Mar 15, 2017 at 5:40 PM, Liang Wang <frank0734 at gmail.com>
> wrote:
> >>>>>
> >>>>> By using the arrow glyph filter on the lines/tubes, the arrows are
> often
> >>>>> slightly dislocated (and thus slightly misaligned) from the tubes
> themselves
> >>>>> (see the attached image).
> >>>>>
> >>>>> In comparison, I am trying to get images like
> >>>>> http://www.tecplot.com/wp-content/uploads/2016/01/fstream.jpg or
> >>>>> https://i.stack.imgur.com/z8nkm.png
> >>>>>
> >>>>> Logically, the arrows could have been an attribute of the
> >>>>> streamlines/stream tubes?
> >>>>>
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> >>>>
> >>>
> >>
> >>
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> >>
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> >>
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