# Custom Coordinate System

**URL:** <https://community.pix4d.com/t/custom-coordinate-system/19750>\
**Category:** PIX4Dmapper\
**Created:** [September 21, 2021, 5:14pm UTC](https://community.pix4d.com/t/custom-coordinate-system/19750 "2021-09-21T17:14:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![manny.hernandez](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/32.png) [@manny.hernandez](https://community.pix4d.com/u/manny.hernandez)\
**Post date:** [September 21, 2021, 5:14pm UTC](https://community.pix4d.com/t/custom-coordinate-system/19750/1 "2021-09-21T17:14:41Z")

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Hello everyone, i had a quick question. I am using pix4dmapper to take images of large areas for inspections. We are also using our own coordinate system. i was hoping someone could help me out in achieving this. we use a variety of software/programs here and each one is linked to our coordinate system. Can someone help and explain on how to do this. what will i need? what information could you use to further help my situation. thank you in adnvance.

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**Author:** ![Mike\_K](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/mike_k/32/4697_2.png) [@Mike\_K](https://community.pix4d.com/u/Mike_K)\
**Post date:** [September 21, 2021, 6:57pm UTC](https://community.pix4d.com/t/custom-coordinate-system/19750/2 "2021-09-21T18:57:50Z")

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Hello,  
Yes, PIX4Dmapper can easily handle arbitrary coordinate systems. When you first start your project you will have to use the Basic Editor in the GCP/MTP Manager to set your GCPs. Once this is completed you can create a Site Calibration file to define the transformation from the image coordinate system to an arbitrary output coordinate system. The article below describes the workflow.

> **[How to compute the Site Calibration for GCPs in an Arbitrary Coordinate System](https://support.pix4d.com/hc/en-us/articles/204515169-How-to-compute-the-Site-Calibration-for-GCPs-in-an-Arbitrary-Coordinate-System)**
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> The site calibration defines the transformation from the image coordinate system to an arbitrary output coordinate system. It can be computed using a project with image geolocation in a known coord...

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**Author:** ![manny.hernandez](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/32.png) [@manny.hernandez](https://community.pix4d.com/u/manny.hernandez)\
**Post date:** [September 27, 2021, 8:50pm UTC](https://community.pix4d.com/t/custom-coordinate-system/19750/3 "2021-09-27T20:50:55Z")

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thank you! im still a little intimidated so ill real through the article you left. i appreciate your help and thanks again!