Adding NZGD2000 deformation model (versions 2000-01-01 to 2018-07-01) #22
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rouault
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May 29, 2020
…abase Related to OSGeo/PROJ-data#22 An entry is added in the ``other_transformation`` table, using a raw PROJ string. Later, once the deformation model has been registered in EPSG, we'll have to add code to map the EPSG transformation method and parameters to +proj=defmodel In the meantime, this works pretty well: ``` $ src/projinfo -s EPSG:4959 -t EPSG:7907 Candidate operations found: 1 ------------------------------------- Operation No. 1: PROJ:NZGD2000-20180701, NZGD2000 to ITRF96 deformation model, unknown accuracy, New Zealand PROJ string: +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg WKT2:2019 string: COORDINATEOPERATION["NZGD2000 to ITRF96 deformation model", VERSION["20180701"], SOURCECRS[ GEOGCRS["NZGD2000", DATUM["New Zealand Geodetic Datum 2000", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",4959]]], TARGETCRS[ GEOGCRS["ITRF96", DATUM["International Terrestrial Reference Frame 1996", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",7907]]], METHOD["PROJ-based operation method: +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg"], USAGE[ SCOPE["unknown"], AREA["New Zealand"], BBOX[-55.95,160.6,-25.88,-171.2]], ID["PROJ","NZGD2000-20180701"], REMARK["New Zealand Deformation Model. Defines the secular model (National Deformation Model) and patches for significant deformation events since 2000"]] ``` ``` $ echo "-41 173 0 2016.5" | PROJ_NETWORK=ON src/cct -d 8 +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg -40.99999402 172.99999938 0.00130333 2016.5000 ``` ``` $ echo "-41 173 0 2016.5" | PROJ_NETWORK=ON src/cs2cs -f "%.8f" EPSG:4959 EPSG:7907 -40.99999402 172.99999938 0.00130333 2016.5 ```
rouault
added a commit
to rouault/PROJ
that referenced
this pull request
May 30, 2020
…abase Related to OSGeo/PROJ-data#22 An entry is added in the ``other_transformation`` table, using a raw PROJ string. Later, once the deformation model has been registered in EPSG, we'll have to add code to map the EPSG transformation method and parameters to +proj=defmodel In the meantime, this works pretty well: ``` $ src/projinfo -s EPSG:4959 -t EPSG:7907 Candidate operations found: 1 ------------------------------------- Operation No. 1: PROJ:NZGD2000-20180701, NZGD2000 to ITRF96 deformation model, unknown accuracy, New Zealand PROJ string: +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg WKT2:2019 string: COORDINATEOPERATION["NZGD2000 to ITRF96 deformation model", VERSION["20180701"], SOURCECRS[ GEOGCRS["NZGD2000", DATUM["New Zealand Geodetic Datum 2000", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",4959]]], TARGETCRS[ GEOGCRS["ITRF96", DATUM["International Terrestrial Reference Frame 1996", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",7907]]], METHOD["PROJ-based operation method: +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg"], USAGE[ SCOPE["unknown"], AREA["New Zealand"], BBOX[-55.95,160.6,-25.88,-171.2]], ID["PROJ","NZGD2000-20180701"], REMARK["New Zealand Deformation Model. Defines the secular model (National Deformation Model) and patches for significant deformation events since 2000"]] ``` ``` $ echo "-41 173 0 2016.5" | PROJ_NETWORK=ON src/cct -d 8 +proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=axisswap +order=2,1 +step +proj=defmodel +model=nz_linz_nzgd2000-20180701.json +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=rad +xy_out=deg -40.99999402 172.99999938 0.00130333 2016.5000 ``` ``` $ echo "-41 173 0 2016.5" | PROJ_NETWORK=ON src/cs2cs -f "%.8f" EPSG:4959 EPSG:7907 -40.99999402 172.99999938 0.00130333 2016.5 ```
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This pull request adds the files implementing 7 versions of the NZGD2000 deformation model.
This deformation models is used to transform NZGD2000 with ITRF96 (the underlying ITRF for the New Zealand datum).