Hi Amanda, I hope this https://github.com/qgis/QGIS-Documentation/issues/6043#issuecomment-682768263 could be helpful to solve your issue.
Otherwise, try to follow this lesson https://docs.qgis.org/testing/en/docs/training_manual/vector_analysis/reproject_transform.html#hard-fa-creating-your-own-projection and test if it works for you. What Mars sinusoidal crs definition string are you using? Regards. Andrea -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user