# How to get pixel coordinate from nrrd file.

**URL:** https://discourse.vtk.org/t/how-to-get-pixel-coordinate-from-nrrd-file/1077
**Category:** Support
**Created:** [June 4, 2019, 6:33am UTC](https://discourse.vtk.org/t/how-to-get-pixel-coordinate-from-nrrd-file/1077 "2019-06-04T06:33:34Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Script\_K](https://discourse.vtk.org/user_avatar/discourse.vtk.org/script_k/32/476_2.png) [@Script\_K](https://discourse.vtk.org/u/Script_K)
#### Post date: [June 4, 2019, 6:33am UTC](https://discourse.vtk.org/t/how-to-get-pixel-coordinate-from-nrrd-file/1077/1 "2019-06-04T06:33:34Z")

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Now I want to get coordinate and pixel value from nrrd file.

but I don’t know how to access file’s information.

My nrrd file has annotation Result (Like circle).

How to get pixel coordinate from nrrd file.

Help me please.

Thanks.

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### Author: ![cory.quammen](https://discourse.vtk.org/user_avatar/discourse.vtk.org/cory.quammen/32/6751_2.png) [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [June 4, 2019, 4:47pm UTC](https://discourse.vtk.org/t/how-to-get-pixel-coordinate-from-nrrd-file/1077/2 "2019-06-04T16:47:03Z")

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Your original question may get more response at either the [Slicer3D](https://discourse.slicer.org/) or [ITK](https://discourse.itk.org/) forums.

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### Author: ![Script\_K](https://discourse.vtk.org/user_avatar/discourse.vtk.org/script_k/32/476_2.png) [@Script\_K](https://discourse.vtk.org/u/Script_K)
#### Post date: [June 4, 2019, 11:31pm UTC](https://discourse.vtk.org/t/how-to-get-pixel-coordinate-from-nrrd-file/1077/3 "2019-06-04T23:31:20Z")

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Okay Thanks