# Change number of scalers

**URL:** <https://discourse.slicer.org/t/change-number-of-scalers/26422>\
**Category:** Support\
**Created:** [November 24, 2022, 2:21pm UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422 "2022-11-24T14:21:59Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![RCJOSHI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rcjoshi/32/17456_2.png) [@RCJOSHI](https://discourse.slicer.org/u/RCJOSHI)\
**Post date:** [November 24, 2022, 2:21pm UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422/1 "2022-11-24T14:21:59Z")

</div>

I have \*.nrrd images and has “Number of scaler” parameter (under the volume information tab in 3-d-slicer) has value 8. I want change this file to the \*.nrrd file having “Number of scaler parameter” is equal to 1. Because it is creating the issue while executing those files having “number of scalers” greater than 1 to run on Pyradiomic platform.

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [November 24, 2022, 2:25pm UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422/2 "2022-11-24T14:25:15Z")

</div>

You can convert this 8-component (vector) image to a single-component (scalar) image using [Vector to scalar volume](https://slicer.readthedocs.io/en/latest/user_guide/modules/vectortoscalarvolume.html) module.

---

<div class="post-metadata">

**Author:** ![RCJOSHI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rcjoshi/32/17456_2.png) [@RCJOSHI](https://discourse.slicer.org/u/RCJOSHI)\
**Post date:** [November 24, 2022, 3:11pm UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422/4 "2022-11-24T15:11:41Z")

</div>

Thanks for the prompt response. My \*.nrrd image is not of vector type. The volume type for given image is “MRMLMulti” having the “Number of scalars” is equal to 8. I need to convert this image to a scalar with “number of scalars” equal to 1

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [November 25, 2022, 6:22am UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422/5 "2022-11-25T06:22:06Z")

</div>

You can either use MultiVolume module to copy the currently selected frame into a scalar volume, or load the volume as a “Volume Sequence” (you can choose how to load a node in the “Description” column in “Add data” window).

---

<div class="post-metadata">

**Author:** ![RCJOSHI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rcjoshi/32/17456_2.png) [@RCJOSHI](https://discourse.slicer.org/u/RCJOSHI)\
**Post date:** [November 25, 2022, 6:30am UTC](https://discourse.slicer.org/t/change-number-of-scalers/26422/6 "2022-11-25T06:30:32Z")

</div>

Thank you so much. It worked for me.