# Blank Heatmaps in GLMakie

**URL:** https://discourse.julialang.org/t/blank-heatmaps-in-glmakie/61567
**Category:** Visualization
**Tags:** makie
**Created:** [May 21, 2021, 8:57am UTC](https://discourse.julialang.org/t/blank-heatmaps-in-glmakie/61567 "2021-05-21T08:57:16Z")
**Posts on this page:** 3
**Page:** 2

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### Author: ![tt1234567](https://avatars.discourse-cdn.com/v4/letter/t/dec6dc/32.png) [@tt1234567](https://discourse.julialang.org/u/tt1234567)
#### Post date: [May 21, 2021, 2:15pm UTC](https://discourse.julialang.org/t/blank-heatmaps-in-glmakie/61567/21 "2021-05-21T14:15:11Z")

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Hi @sdanisch. I’ve just removed 0.3.0 and added 0.2.9 and the heatmap seems to work OK.

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### Author: ![sdanisch](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/sdanisch/32/1406_2.png) [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [May 21, 2021, 5:14pm UTC](https://discourse.julialang.org/t/blank-heatmaps-in-glmakie/61567/22 "2021-05-21T17:14:56Z")

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Ok…  
Since there is no obvious problem with the heatmap shader and no errors, I don’t have much to play around with ☹

I tried to clean up the shaders a bit and double checked that all variables are initialized correctly - there is some small hope, that this may fix the problem:  
[https://github.com/JuliaPlots/GLMakie.jl/pull/191](https://github.com/JuliaPlots/GLMakie.jl/pull/191)  
If anyone can try out that branch, it would be great to know if that helped!  
`]add GLMakie#sd/cleanup`

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<div class="post-metadata">

### Author: ![tt1234567](https://avatars.discourse-cdn.com/v4/letter/t/dec6dc/32.png) [@tt1234567](https://discourse.julialang.org/u/tt1234567)
#### Post date: [May 21, 2021, 5:48pm UTC](https://discourse.julialang.org/t/blank-heatmaps-in-glmakie/61567/23 "2021-05-21T17:48:21Z")

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That seems to have fixed it. Thanks so much! I’ve been relying on Julia/GLMakie for streaming and displaying acoustic data from an ADC/FPGA.

```julia
heatmap(rand(5,5))

```

 ![hmfixed](https://global.discourse-cdn.com/julialang/original/3X/d/4/d4c6c808753bb68bbd198a61fc4e68058016c8da.png)

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