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Diffstat (limited to 'data/CH')
| -rw-r--r-- | data/CH | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/data/CH b/data/CH new file mode 100644 index 00000000..af77ae48 --- /dev/null +++ b/data/CH @@ -0,0 +1,23 @@ +# This init file provides definitions for CH1903 and CH1903/LV03 +# projections using the distortion grids developed by Swisstopo. +# See: https://shop.swisstopo.admin.ch/en/products/geo_software/GIS_info +# +# You'll need to download the grids separately and put in a directory +# scanned by libproj. Directories may be added to the scan list through +# the PROJ_LIB environment variable +# +# Note that an independent effort was made to derive an usable grid +# from the CH1903->CH1903+ grid initially available from the Swisstopo +# website. You can read about this other effort here: +# http://lists.maptools.org/pipermail/proj/2012-February/006093.html +# It may be of interest because the latter was by some reported as being +# more accurate than the former: +# http://lists.maptools.org/pipermail/proj/2012-February/006119.html +# +# This init file uses the official one +# +<metadata> +origin=Swisstopo +lastupdate=2012-02-27 +# CH1903/LV03 +<1903_LV03> +proj=somerc +lat_0=46.95240555555556 +lon_0=7.439583333333333 +k_0=1 +x_0=600000 +y_0=200000 +ellps=bessel +units=m +nadgrids=CHENYX06_etrs.gsb +no_defs +# CH1903 +<1903> +proj=longlat +ellps=bessel +nadgrids=CHENYX06_etrs.gsb +no_defs <> |