# Plot lines in the gaps between subplots

**URL:** <https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172>\
**Category:** Visualization\
**Tags:** plots, layout-plots\
**Created:** [April 27, 2022, 9:38pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172 "2022-04-27T21:38:01Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![chunjiw](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chunjiw](https://discourse.julialang.org/u/chunjiw)\
**Post date:** [April 27, 2022, 9:38pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172/1 "2022-04-27T21:38:01Z")

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Is it possible to plot lines in the gaps between subplots? For example, the two black lines indicating that the bottom plot is a zoom-in view of the top plot:  
 ![a0e94433-2310-4e8c-bad7-27186103](https://global.discourse-cdn.com/julialang/original/3X/6/1/61d1a80810f21adf6dc8e90417ef54a8f4e38ab7.png)

Thanks for any help!

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**Author:** ![rafael.guerra](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rafael.guerra/32/216610_2.png) [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)\
**Post date:** [April 28, 2022, 7:28pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172/2 "2022-04-28T19:28:59Z")

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One way using Plots.jl layouts:

```julia
using Measures, Plots; gr()
l = @layout [a{0.45h}; b{0.05h}; c]
p1 = histogram(rand(1000), c=:reds, widen=false)
p2 = plot([0, 0.3, NaN, 0.75, 1], [0.0, 1, NaN, 1, 0], lc=:black, lw=3, frame=:none)
p3 = histogram(rand(100), c=:blues, widen=false)
plot(p1, p2, p3, layout=l, margin=0mm)

```

![Plots_layouts_lines_between_subplots](https://global.discourse-cdn.com/julialang/original/3X/b/e/bef66e6ab0aaf055d201c4f66c19291c181e3609.png)

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**Author:** ![chunjiw](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chunjiw](https://discourse.julialang.org/u/chunjiw)\
**Post date:** [April 28, 2022, 7:46pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172/3 "2022-04-28T19:46:33Z")

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Thank you! Eliminate the gap and squeeze into another subplot, simple but brilliant.

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<div class="post-metadata">

**Author:** ![chunjiw](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chunjiw](https://discourse.julialang.org/u/chunjiw)\
**Post date:** [May 2, 2022, 9:34pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172/4 "2022-05-02T21:34:04Z")

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I want to add that in order to completely close the gaps between subplots, I need to use `margin=-2mm`.