# Scaling arrow heads in quiver function

**URL:** <https://discourse.julialang.org/t/scaling-arrow-heads-in-quiver-function/139101>\
**Category:** New to Julia\
**Created:** [August 30, 2026, 2:18pm UTC](https://discourse.julialang.org/t/scaling-arrow-heads-in-quiver-function/139101 "2026-08-30T14:18:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tjipke](https://avatars.discourse-cdn.com/v4/letter/t/b5e925/32.png) [@Tjipke](https://discourse.julialang.org/u/Tjipke)\
**Post date:** [August 30, 2026, 2:18pm UTC](https://discourse.julialang.org/t/scaling-arrow-heads-in-quiver-function/139101/1 "2026-08-30T14:18:20Z")

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I am having trouble with creating nice flow plots for a velocity vector field. I try to use the quiver command but cannot find how to scale the arrow heads properly. Below a picture of the plot, I want to have the heads make up less space in the hope it will be better readable.

 ![afbeelding](https://global.discourse-cdn.com/julialang/original/3X/2/5/25f539438f7df0c5ad3ef2edd8031071514929b4.png)

and here some code that makes it work (if I need to supply more let me know, I am new to this blog).

```Julia
    p4 = quiver(
        xs,
        ys,
        quiver = (vx_dir, vy_dir),
        xlabel = "x",
        ylabel = "y",
        title = "velocity directions",
        legend = false,
        xlims = (0, L),
        ylims = (-w, w),
    )

```

The velocities are also normalized, and I plot it with a magnitude plot side-by-side using Plots, so I would like the solution to be compatible with plots(p1, p2, …).

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**Author:** ![BeastyBlacksmith](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/beastyblacksmith/32/4741_2.png) [@BeastyBlacksmith](https://discourse.julialang.org/u/BeastyBlacksmith)\
**Post date:** [August 30, 2026, 2:39pm UTC](https://discourse.julialang.org/t/scaling-arrow-heads-in-quiver-function/139101/2 "2026-08-30T14:39:15Z")

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Should be `arrow = Arrow(0.1)` if the backens supports it

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**Author:** ![liuyxpp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/liuyxpp/32/9870_2.png) [@liuyxpp](https://discourse.julialang.org/u/liuyxpp)\
**Post date:** [August 30, 2026, 3:46pm UTC](https://discourse.julialang.org/t/scaling-arrow-heads-in-quiver-function/139101/3 "2026-08-30T15:46:53Z")

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Maybe try UniformStreamlines.jl?