# a problem of 3d data
**URL:** https://discourse.vtk.org/t/a-problem-of-3d-data/13740
**Category:** Support
**Created:** [April 18, 2024, 12:13pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740 "2024-04-18T12:13:30Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@czgchd](https://discourse.vtk.org/u/czgchd)
#### Post date: [April 18, 2024, 12:13pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740/1 "2024-04-18T12:13:30Z")
dear everyone 🙂
i have a txt file, data is following 🙂
x y z color
0 2 3 0.5
1 2 4 0.2
3 2 5 0.1
i want to build the 3d heatmap with VTK
but i do not know to perform it.
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 18, 2024, 12:36pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740/2 "2024-04-18T12:36:49Z")
This is three points. Just a triangle with color for each point. Where is the 3D heatmap coming from ?
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### Author:  [@czgchd](https://discourse.vtk.org/u/czgchd)
#### Post date: [April 18, 2024, 12:40pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740/3 "2024-04-18T12:40:55Z")
actually , x ,y,and z range is from 0 to 199
x y z color
0 0 0 0.5
1 0 0 0.2
0 1 0 0.2
…
199 199 199 0.8
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 18, 2024, 12:41pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740/4 "2024-04-18T12:41:42Z")
Open the file with ParaView then using TableToRectilinearGrid filter.
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### Author:  [@czgchd](https://discourse.vtk.org/u/czgchd)
#### Post date: [April 18, 2024, 12:46pm UTC](https://discourse.vtk.org/t/a-problem-of-3d-data/13740/5 "2024-04-18T12:46:15Z")
> [@mwestphal](#):
>
> TableToRectilinearGrid
thanks , i will try it based on your advice.