# Ploting LARGE heatmaps? Plots.jl in GPU?
**URL:** https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033
**Category:** General Usage
**Tags:** package, plots, glmakie
**Created:** [February 4, 2023, 9:46am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033 "2023-02-04T09:46:32Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 4, 2023, 9:46am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/1 "2023-02-04T09:46:32Z")
Hi all.
I have this matrix that has a size of 3250x55650 and it is just a sample of my raw data.
I have a few files much larger.
I need to make heatmaps but Plots.jl is a bit slow on CPU when I run these lines
> p1=heatmap(tticks,offset,strainrate,color=:viridis, clims=(-2000,2000))
> plot(p1,size=(1600,800))
Is it maybe a best way to handle very big matrix for fast plotting? Maybe plotting on GPU (I have a MacBook Air with an M1 Chip).
Thanks in advance 🙂
---
### Author:  [@rveltz](https://discourse.julialang.org/u/rveltz)
#### Post date: [February 4, 2023, 9:56am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/2 "2023-02-04T09:56:35Z")
Makie?
---
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 4, 2023, 10:01am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/3 "2023-02-04T10:01:55Z")
Never tried Makie. Is it fast and does it work with GPU?
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### Author:  [@Salmon](https://discourse.julialang.org/u/Salmon)
#### Post date: [February 4, 2023, 10:20am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/4 "2023-02-04T10:20:10Z")
GLmakie uses the GPU and should be quite fast although I have never used it on this kind of scale
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### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [February 4, 2023, 11:43am UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/5 "2023-02-04T11:43:45Z")
Fyi, the [InteractiveViz](https://docs.juliahub.com/InteractiveViz/AYpiK/0.1.3/) package looks very interesting.
It takes ~1 s to display a 3250 x 55650 heatmap (~180M points, not all displayed as it is pointless) and zooming in and out is instantaneous (bringing more points in, as needed):
```julia
using InteractiveViz, GLMakie
strainrate = sind.((1:3250) .* (1:55650)'/5e4)
iheatmap(strainrate; cursor=true)
```
with interactive zoom-in and cursor info:
---
### Author:  [@Ahmed\_Salih](https://discourse.julialang.org/u/Ahmed_Salih)
#### Post date: [February 4, 2023, 8:54pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/6 "2023-02-04T20:54:05Z")
Does it have 3D?
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### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [February 4, 2023, 9:06pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/7 "2023-02-04T21:06:04Z")
No
---
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 5, 2023, 6:58pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/8 "2023-02-05T18:58:07Z")
> [@marianoarnaiz](#):
>
> Hi all.
> I have this matrix that has a size of 3250x55650 and it is just a sample of my raw data.
> I have a few files much larger.
>
> I need to make heatmaps but Plots.jl is a bit slow on CPU when I run these lines
>
> > p1=heatmap(tticks,offset,strainrate,color=:viridis, clims=(-2000,2000))
> > plot(p1,size=(1600,800))
>
> Is it maybe a best way to handle very big matrix for fast plotting? Maybe plotting on GPU (I have a MacBook Air with an M1 Chip).
>
> Thanks in advance 🙂
This is great but there are some limitations like no color bar ☹
---
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 5, 2023, 6:58pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/9 "2023-02-05T18:58:58Z")
Not really working on my computer (MacBook Air M1) getting this error when using large data sets:
UNSUPPORTED (log once): POSSIBLE ISSUE: unit 1 GLD\_TEXTURE\_INDEX\_1D is unloadable and bound to sampler type (Float) - using zero texture because texture unloadable
---
### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [February 5, 2023, 9:36pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/10 "2023-02-05T21:36:50Z")
> [@marianoarnaiz](#):
>
> This is great but there are some limitations like no color bar ☹
Indeed, but I guess fixing it should be a piece of cake for the Makie gurus.
Now I can’t run the code anymore, I get errors:
```julia
ERROR: No backend available (GLMakie, CairoMakie, WGLMakie)!
```
But I think the following commands add a colorbar on the left side:
```julia
fig = Figure()
iheatmap(strainrate; cursor=true);
Colorbar(fig[1,-1], limits=(-1, 1), colormap=:viridis, flipaxis=false)
```
Perhaps some left padding can be added to the plot.
---
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 13, 2023, 12:57pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/11 "2023-02-13T12:57:52Z")
> [@rafael.guerra](#):
>
> ```julia
> fig = Figure()
> iheatmap(strainrate; cursor=true);
> Colorbar(fig[1,-1], limits=(-1, 1), colormap=:viridis, flipaxis=false)
>
> ```
Did not work for me ☹
---
### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [February 13, 2023, 3:20pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/12 "2023-02-13T15:20:48Z")
> [@marianoarnaiz](#):
>
> Did not work for me
```julia
Colorbar(fig[-1,-1], limits=(-1, 1), colormap=:viridis, flipaxis=false)
```
Produces a colorbar, but it is on top of the y-axis:
---
### Author:  [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)
#### Post date: [February 13, 2023, 7:20pm UTC](https://discourse.julialang.org/t/ploting-large-heatmaps-plots-jl-in-gpu/94033/13 "2023-02-13T19:20:37Z")
It worked this time. I was trying to link it to Axis in Makie, but it didn´t work. It is a great package, it is a shame it is still in development hehe. Thanks @rafael.guerra