# Have problem on render my data
**URL:** https://discourse.vtk.org/t/have-problem-on-render-my-data/10674
**Category:** Support
**Tags:** python
**Created:** [February 14, 2023, 3:18pm UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674 "2023-02-14T15:18:50Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@MushengWu](https://discourse.vtk.org/u/MushengWu)
#### Post date: [February 14, 2023, 3:18pm UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/1 "2023-02-14T15:18:50Z")
I am new for VTK, and recently my project need it,and i have many question waiting for resolution
Here is one:
when I load my data, i used the following code:
> def load\_Nifti(data):
> Nifti = vtkNIFTIImageReader()
> Nifti.SetFileName(data)
> Nifti.Update()
>
> ```
> volume = Nifti.GetOutput()
>
> return volume
>
> ```
And my data’s original size is (208, 240, 368)
When i render my data, the code is automatic do the resample to 1_1_1,which i didn’t want to.
Because i found that when i used:
> volume.GetBounds()
I get :
> (0.0, 157.15559297800064, 0.0, 157.66013169288635, 0.0, 100.6149368584156)
> obvious that is the resample size,which i had calculated
How can i render my original data?
---
### Author:  [@MushengWu](https://discourse.vtk.org/u/MushengWu)
#### Post date: [February 14, 2023, 3:34pm UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/2 "2023-02-14T15:34:05Z")
That is what mesh Axis see, it can show that the size become the resample size
---
### Author:  [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [February 14, 2023, 10:13pm UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/3 "2023-02-14T22:13:08Z")
Hello,
> [@MushengWu](#):
>
> the resample to 1_1_1
A 1x1x1 resample is no resampling (you render all the voxels). Why do you think the renderer is skipping data?
regards,
Paulo
---
### Author:  [@MushengWu](https://discourse.vtk.org/u/MushengWu)
#### Post date: [February 15, 2023, 2:03am UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/4 "2023-02-15T02:03:43Z")
> [@Paulo\_Carvalho](#):
>
> A 1x1x1 resample is no resampling (you render all the voxels). Why do you think the renderer is skipping data?
>
> regards,
Because the data original spacing and size are：
> (0.4282168745994568, 0.6596658229827881, 0.48606249690055847)
> (208, 240, 368)
And after render, the size is become (158, 158, 101), and that size is when resample to 1x1x1
---
### Author:  [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [February 15, 2023, 11:40am UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/5 "2023-02-15T11:40:14Z")
What class `volume` belongs to?
---
### Author:  [@MushengWu](https://discourse.vtk.org/u/MushengWu)
#### Post date: [February 15, 2023, 1:56pm UTC](https://discourse.vtk.org/t/have-problem-on-render-my-data/10674/6 "2023-02-15T13:56:15Z")
I figured it out.
After render，the volume become physical size，it didn’t do any other opera
And i hadn’t thought that before
Thank you very much for your help