# Does Glyph filter works with fixed number of points ?

**URL:** https://discourse.paraview.org/t/does-glyph-filter-works-with-fixed-number-of-points/3870
**Category:** ParaView Support
**Created:** [March 24, 2020, 1:45am UTC](https://discourse.paraview.org/t/does-glyph-filter-works-with-fixed-number-of-points/3870 "2020-03-24T01:45:52Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![lainegates](https://discourse.paraview.org/user_avatar/discourse.paraview.org/lainegates/32/2643_2.png) [@lainegates](https://discourse.paraview.org/u/lainegates)
#### Post date: [March 24, 2020, 1:45am UTC](https://discourse.paraview.org/t/does-glyph-filter-works-with-fixed-number-of-points/3870/1 "2020-03-24T01:45:52Z")

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I am trying to use glyph to display normals for points.  
But the number of points changes along time.  
i.e., At step 0, there is no points; at step 1, there maybe 3 points ; then at step 2, there are 4 points.

I organize time series data by .pvd file.

when I open .pvd file with paraview, and start time step animation, the problem comes.  
The glyph output were reset, and all arrow point with orientation (1,0,0)  
And If I set Glyph at step 1 which has 4 points. And increase time step by 1, but step 2 has only 3 points. The Glyph just disappeared.

So. Does Glyph assumes fixed number of points ?

[display.zip](https://discourse.paraview.org/uploads/short-url/2YcdEqjPK7pZotNESstNJdB3bVm.zip) (5.8 KB)

I aslo saw that there are “3D glyphs” choice in “Representation” of property widget. But its arrows always orients (1,0,0). How to use it correctly?

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### Author: ![lainegates](https://discourse.paraview.org/user_avatar/discourse.paraview.org/lainegates/32/2643_2.png) [@lainegates](https://discourse.paraview.org/u/lainegates)
#### Post date: [March 24, 2020, 8:08am UTC](https://discourse.paraview.org/t/does-glyph-filter-works-with-fixed-number-of-points/3870/2 "2020-03-24T08:08:24Z")

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I found the solution.

It works with `3D Glyphs` in “Representations” if I set a default point at step 0 .  
The `Vector` could be set in advanced properties.

But how to set size of arrows of Glyph? Currently the arrows of Glyph are really big.

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### Author: ![lainegates](https://discourse.paraview.org/user_avatar/discourse.paraview.org/lainegates/32/2643_2.png) [@lainegates](https://discourse.paraview.org/u/lainegates)
#### Post date: [March 24, 2020, 3:07pm UTC](https://discourse.paraview.org/t/does-glyph-filter-works-with-fixed-number-of-points/3870/3 "2020-03-24T15:07:33Z")

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I find it, in advanced options, there are “Scale Factor”, set it be inputting value gives me what I want.