Re: [gdal-dev] UTM local correction for height and distance-to-reference-meridian ?

2025-01-21 Thread Thomas Knudsen via gdal-dev
If you plan to transform to a different system anyway, I would definitely prefer going to geographical coordinates, and computing the length of the geodesic between the two points. First step in converting between a projected system and the earth centered cartesian XYZ, is using the inverse of the

Re: [gdal-dev] LIBERTIFF / Thread-safe TIFF reader

2024-12-19 Thread Thomas Knudsen via gdal-dev
I think that sounds awesome wrt. PROJ dependency reduction, since the informal interpretation of TIFF as "Thousands of Incompatible File Formats" doesn't really apply to PROJ's use case ___ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osge

Re: [gdal-dev] Question on building multi band composite and going back to RGB GeoTiff

2024-04-23 Thread Thomas Knudsen via gdal-dev
Way back in a different career stage, I published this method for displaying colour-infrared as fairly convincing pseudo-true colour: https://www.researchgate.net/publication/242078137_A_simplified_method_for_generation_of_pseudo_natural_colours_from_colour_infrared_aerial_photos At least one comp

Re: [gdal-dev] [EXTERNAL] Re: Lack of srs importFromESRI integer function

2024-01-12 Thread Thomas Knudsen via gdal-dev
In the DK registry we used descriptive names, rather than numbers to refer to the transformations taking legacy systems to ETRS89. Essentially these transformations amounted to CRS definitions. Is it safe to assume a "crs_code" is strictly numeric? Den ons. 10. jan. 2024 kl. 20.46 skrev Meyer, Jes

Re: [gdal-dev] Requiring numpy for the Python bindings

2023-12-04 Thread Thomas Knudsen via gdal-dev
Den tirs. 5. dec. 2023 kl. 02.15 skrev Greg Troxel via gdal-dev < gdal-dev@lists.osgeo.org>: > Building the > rust compiler requires the *immediately preceding* compiler, which seems > unprecented, and I don't understand how people can think that's ok I don't think this is true - it's merely the