Hi, ok, thanks.
> Do you know how that CRS was attributed to the layers ? (through some choice > in a list of predefined CRS ? no idea how Arc stuff works) No, a third party tool created the layer. If necessary I can contact the developer. > I believe this CRS should be identified as EPSG:31255 Yes, that is the correct code. > Which version of ArcMap / ArcGIS was used to produce this GDB ? ArcGIS Desktop 10.8.1 Simon Von: Even Rouault <even.roua...@spatialys.com> Gesendet: Freitag, 27. Jänner 2023 15:23 An: Simon Gröchenig <groeche...@zt-gis.at> Cc: gdal-dev@lists.osgeo.org Betreff: Re: AW: [gdal-dev] Bad GDB performance Hi Simon, the GDB is fine. GDAL struggles because it tries to identify the CRS definition from the GDB ( 'PROJCS["GK_31",GEOGCS["GCS_MGI",DATUM["D_MGI",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-5000000.0],PARAMETER["Central_Meridian",13.3333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]' ) with a known one (EPSG, ESRI) in PROJ CRS database. But there is no match for the GK_31 name so it has to go to slower methods. Do you know how that CRS was attributed to the layers ? (through some choice in a list of predefined CRS ? no idea how Arc stuff works) I believe this CRS should be identified as EPSG:31255, which in the current ESRI CRS database, is called MGI_Austria_GK_Central: PROJCS["MGI_Austria_GK_Central",GEOGCS["GCS_MGI",DATUM["D_MGI",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-5000000.0],PARAMETER["Central_Meridian",13.3333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]] Which version of ArcMap / ArcGIS was used to produce this GDB ? Even Le 27/01/2023 à 14:34, Simon Gröchenig a écrit : Hi Even, great, thank you! Is the GDB itself fine? Or is there something I can do to fix the database? Simon Von: Even Rouault <even.roua...@spatialys.com><mailto:even.roua...@spatialys.com> Gesendet: Freitag, 27. Jänner 2023 13:38 An: Simon Gröchenig <groeche...@zt-gis.at><mailto:groeche...@zt-gis.at>; gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org> Betreff: Re: [gdal-dev] Bad GDB performance Hi Simon, fix queued in https://github.com/OSGeo/gdal/pull/7131 Even Le 27/01/2023 à 06:49, Simon Gröchenig a écrit : Hi all, I am struggling with a bad performance at reading FileGeodatabases in QGIS. I hope, this is the place where I can find someone to help me find the bottleneck. I have uploaded a sample dataset here: https://mega.nz/file/nnxVULyC#QcuGJEHedayIC7b1i14J0X8OBExVfhcb55DnnVtGzuc Loading a QGIS project containing this GDB (layer Kataster/GST) results in a layer loading time of 5+ seconds according to the QGIS Debugging/Development Tools. I expect less than 1 second to load this dataset. I appreciate any help to find if it is a GDAL or a dataset issue? Simon ------------------------------------------------ Vermessungskanzlei Neumayr Simon Gröchenig - Geoinformation [cid:image001.jpg@01D93264.4D30EA30] Albin Egger-Str. 10 9900 Lienz Tel: +43 4852-68568-31 Email: groeche...@zt-gis.at<mailto:groeche...@zt-gis.at> Web: http://www.zt-gis.at/ _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org> https://lists.osgeo.org/mailman/listinfo/gdal-dev -- http://www.spatialys.com My software is free, but my time generally not. -- http://www.spatialys.com My software is free, but my time generally not.
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