# Save derived DTI heatmap

**URL:** <https://discourse.slicer.org/t/save-derived-dti-heatmap/3319>\
**Category:** Support\
**Created:** [June 27, 2018, 6:03pm UTC](https://discourse.slicer.org/t/save-derived-dti-heatmap/3319 "2018-06-27T18:03:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ssyip](https://avatars.discourse-cdn.com/v4/letter/s/3d9bf3/32.png) [@ssyip](https://discourse.slicer.org/u/ssyip)\
**Post date:** [June 27, 2018, 6:03pm UTC](https://discourse.slicer.org/t/save-derived-dti-heatmap/3319/1 "2018-06-27T18:03:53Z")

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Hello, I have a question.

I was able to save my DTI 3D model as object (by saving it as vtk, obj, stl). In addition to the object file, I also want to save the heatmap. Specifically, I want to as the model and its corresponding heatmap (or colormap) so that I can open it using another program different from Slicer.

Does anyone know how to do that? Thank you!

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [June 27, 2018, 6:38pm UTC](https://discourse.slicer.org/t/save-derived-dti-heatmap/3319/2 "2018-06-27T18:38:53Z")

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(@ssyip I created a new topic)

> [@ssyip](#):
>
> Specifically, I want to as the model and its corresponding heatmap (or colormap) so that I can open it using another program different from Slicer.

You can assign a scalar to the model in the Tractography Display module:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/8/388b3faf885a8011b642aed84cec03c8018a3536.png)

Then use the export module discussed below, from the SlicerDMRI extension – it will preserve the assigned colors upon export:

> [@Tractography export by color](https://discourse.slicer.org/t/tractography-export-by-color/3191/2):
>
> Please try the Export tractography to PLY (mesh) module, available in the SlicerDMRI extension in nightly builds (since early April). Note that we use PLY specifically because it supports color. Most software with STL import also supports PLY, but if you specifically need OBJ (supports color) or STL (no color) you can [convert in MeshLab](https://github.com/SlicerDMRI/SlicerDMRI/wiki/How-to-export-atlas-or-tractography-for-visualization-in-Blender).