https://community.esri.com/t5/arcgis-pro-questions/custom-crs-for-desktop-deployment/m-p/1600793#M94469 <P>Hello,</P><P>We want to help users with some custom coordinate systems to choose the right transformation to apply to their data.</P><P>We have a database of these CRS in a system similar to <A href="https://epsg.org/home.html" target="_blank">EPSG Geodetic Parameter Dataset</A>. We create some "bound CRS" with a specific custom code and a specific authority to make a transformation preference.</P><P>We have already implemented these bound CRS as new CRS in proj to use them with some open source libraries (proj, part of gdal/rasterio), software (QGIS), and databases (PostGIS) with the same base of proj for all these apps.</P><P>We are trying to find a way to do this in Esri and we found this: &nbsp;<A href="https://pro.arcgis.com/fr/pro-app/latest/help/mapping/properties/arcgis-coordinate-systems-data.htm" target="_blank">Installer des fichiers de système de coordonnées supplémentaires—ArcGIS Pro | Documentation</A>. Unfortunately, there is no documentation.</P><P>We also tried to implement some prj files in the user folder but:</P><UL><LI>We would prefer a generic solution in the program file or program data to apply after installation.</LI><LI>CRS implemented in prj files did not contain wkid information.</LI></UL><P>Do you have any solutions to propose to us to improve the management of CRS for our users?</P><P>Thanks for your help</P><P>Guillaume</P> Mon, 31 Mar 2025 11:55:40 GMT GuillaumeARNAUD_31 2025-03-31T11:55:40Z https://community.esri.com/t5/arcgis-pro-questions/custom-crs-for-desktop-deployment/m-p/1600793#M94469 <P>Hello,</P><P>We want to help users with some custom coordinate systems to choose the right transformation to apply to their data.</P><P>We have a database of these CRS in a system similar to <A href="https://epsg.org/home.html" target="_blank">EPSG Geodetic Parameter Dataset</A>. We create some "bound CRS" with a specific custom code and a specific authority to make a transformation preference.</P><P>We have already implemented these bound CRS as new CRS in proj to use them with some open source libraries (proj, part of gdal/rasterio), software (QGIS), and databases (PostGIS) with the same base of proj for all these apps.</P><P>We are trying to find a way to do this in Esri and we found this: &nbsp;<A href="https://pro.arcgis.com/fr/pro-app/latest/help/mapping/properties/arcgis-coordinate-systems-data.htm" target="_blank">Installer des fichiers de système de coordonnées supplémentaires—ArcGIS Pro | Documentation</A>. Unfortunately, there is no documentation.</P><P>We also tried to implement some prj files in the user folder but:</P><UL><LI>We would prefer a generic solution in the program file or program data to apply after installation.</LI><LI>CRS implemented in prj files did not contain wkid information.</LI></UL><P>Do you have any solutions to propose to us to improve the management of CRS for our users?</P><P>Thanks for your help</P><P>Guillaume</P> Mon, 31 Mar 2025 11:55:40 GMT https://community.esri.com/t5/arcgis-pro-questions/custom-crs-for-desktop-deployment/m-p/1600793#M94469 GuillaumeARNAUD_31 2025-03-31T11:55:40Z