Q&A - Question How to add projections at http://spatialreference.org. Question ilkk asked on January 15, 2018, keyword: Developer Kernel Turkey SR-ORG: 7931: ITRF96 / TM27, SR-ORG: 7932: ITRF96 / TM30, SR-ORG: 7933: ITRF96 / TM33, SR-ORG: 7934: ITRF96 / TM36, SR-ORG: 7935: ITRF96 / TM39, SR-ORG: 7936: ITRF96 / TM42, SR-ORG: 7937: ITRF96 / TM45 projections (ITRF96) are used. These are defined as tatukgis. How can I add if it is not defined. http://spatialreference.org/ref/?search=ITRF96 Answers Tomasz Kosinski (TatukGIS) replied January 15, 2018 You can just use a WKT definition like http://spatialreference.org/ref/sr-org/7931/ogcwkt/ But are those definition equal to TUREF (lke EPSG:5253)? Visit http://www.epsg-registry.org and search for TUREF ilkk replied January 15, 2018 TUREF TM27 (epsg: 5253) and SR-ORG: 7931: ITRF96 / TM27 are not the same. Coordinate transformations etc. it is an error. If you would like to answer the question please Sign In. * * Stay signed in on this computer Please review our recent Privacy Policy.If you have any questions or requests, please contact us. Forgotten password Rules The Questions and Answers (Q & A) is intended to provide a means of communication between TatukGIS customers. Licensed users (with active maintenance play) of TatukGIS products may contribute to the Q & A content. Read-only access is available to anyone. Keep the content positive and professional. Be courteous to others by posting information when a question or issue asked on the Q & A is answered or resolved by other means (such as with help from TatukGIS technical support). Offer others at least a hint how the posted question was answered or the issue was resolved. The Q & A is not a replacement for TatukGIS technical support. TatukGIS team may or may not regularly follow or contribute content.