From 55452f6f7af868413e34882e4ec999f3082f3243 Mon Sep 17 00:00:00 2001 From: Jonathan Gregory Date: Wed, 6 Nov 2024 23:23:56 +0000 Subject: [PATCH 1/2] Update link to CR-WKT mapping --- appf.adoc | 8 ++++---- bibliography.adoc | 1 + 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/appf.adoc b/appf.adoc index 063450dd..b75b7b97 100644 --- a/appf.adoc +++ b/appf.adoc @@ -173,7 +173,7 @@ link:$$https://proj.org/operations/projections/cea.html$$[https://proj.org/opera and link:$$http://geotiff.maptools.org/proj_list/cylindrical_equal_area.html$$[http://geotiff.maptools.org/proj_list/cylindrical_equal_area.html] ("Lambert Cylindrical Equal Area" or EPSG 9834 or EPSG 9835). -Detailed formulas can be found in <> pages 76-85. +Detailed formulas can be found in <> pages 76-85. === Latitude-Longitude @@ -449,7 +449,7 @@ This attribute and **`geoid_name`** cannot both be specified. | **`horizontal_datum_name`** | S | The name of the geodetic (horizontal) datum, which corresponds to the procedure used to measure positions on the surface of the Earth. -Valid datum names and their associated parameters are given in https://github.com/cf-convention/cf-conventions/wiki/Mapping-from-CF-Grid-Mapping-Attributes-to-CRS-WKT-Elements (horiz_datum.csv, OGC_DATUM_NAME column) and are obtained by transforming the EPSG name using the following rules (used by OGR and Cadcorp): convert all non alphanumeric characters (including +) to underscores, then strip any leading, trailing or repeating underscores. +Valid datum names and their associated parameters are given in <> (horiz_datum.csv, OGC_DATUM_NAME column) and are obtained by transforming the EPSG name using the following rules (used by OGR and Cadcorp): convert all non alphanumeric characters (including +) to underscores, then strip any leading, trailing or repeating underscores. This is to ensure that named datums can be correctly identified for precise datum transformations (see https://github.com/cf-convention/cf-conventions/wiki/OGC-WKT-Coordinate-System-Issues for more details). Corresponds to a OGC WKT DATUM node name. @@ -501,7 +501,7 @@ Used by perspective-type map projections, for example the Vertical Perspective P | **`prime_meridian_name`** | S | The name of the prime meridian associated with the geodetic datum. -Valid names are given in https://github.com/cf-convention/cf-conventions/wiki/Mapping-from-CF-Grid-Mapping-Attributes-to-CRS-WKT-Elements (prime_meridian.csv). +Valid names are given in <> (prime_meridian.csv). Corresponds to a OGC WKT PRIMEM node name. |**`projected_crs_name`** | S @@ -510,7 +510,7 @@ Corresponds to a OGC WKT PROJCS node name. | **`reference_ellipsoid_name`** | S | The name of the reference ellipsoid. -Valid names are given in https://github.com/cf-convention/cf-conventions/wiki/Mapping-from-CF-Grid-Mapping-Attributes-to-CRS-WKT-Elements (ellipsoid.csv). +Valid names are given in <> (ellipsoid.csv). Corresponds to a OGC WKT SPHEROID node name. | **`scale_factor_at_central_meridian`** | N diff --git a/bibliography.adoc b/bibliography.adoc index 3e0b5f9b..ab41aff5 100644 --- a/bibliography.adoc +++ b/bibliography.adoc @@ -4,6 +4,7 @@ === References - [[[CFDM]]] link:$$https://doi.org/10.5194/gmd-10-4619-2017$$[A data model of the Climate and Forecast metadata conventions (CF-1.6) with a software implementation (cf-python v2.1)]. Hassell, D., Gregory, J., Blower, J., Lawrence, B. N., and Taylor, K. E.: _Geosci. Model Dev._, 10, 4619-4646, 2017. +- [[[CF-WKT]]] link:$$https://cfconventions.org/wkt-proj-4.html$$[Mapping from CF Grid Mapping Attributes to CRS WKT Elements]. - [[[COARDS]]] link:$$https://ferret.pmel.noaa.gov/Ferret/documentation/coards-netcdf-conventions$$[Conventions for the standardization of NetCDF Files]. Sponsored by the "Cooperative Ocean/Atmosphere Research Data Service," a NOAA/university cooperative for the sharing and distribution of global atmospheric and oceanographic research data sets. May 1995. - [[[DCG19]]] link:$$https://doi.org/10.5194/gmd-12-4099-2019$$[Evaluation of lossless and lossy algorithms for the compression of scientific datasets in netCDF-4 or HDF5 files]. Delaunay, X., A. Courtois, and F. Gouillon: _Geosci. Model Dev._, 12, 4099-4113, 2019. From 5be6da92ef2623bce8ccb1c79a0c6dbb9cd01547 Mon Sep 17 00:00:00 2001 From: JonathanGregory Date: Sat, 9 Nov 2024 18:58:35 +0000 Subject: [PATCH 2/2] following revision of the cf/wkt page --- appf.adoc | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/appf.adoc b/appf.adoc index b75b7b97..ab94a480 100644 --- a/appf.adoc +++ b/appf.adoc @@ -449,8 +449,9 @@ This attribute and **`geoid_name`** cannot both be specified. | **`horizontal_datum_name`** | S | The name of the geodetic (horizontal) datum, which corresponds to the procedure used to measure positions on the surface of the Earth. -Valid datum names and their associated parameters are given in <> (horiz_datum.csv, OGC_DATUM_NAME column) and are obtained by transforming the EPSG name using the following rules (used by OGR and Cadcorp): convert all non alphanumeric characters (including +) to underscores, then strip any leading, trailing or repeating underscores. -This is to ensure that named datums can be correctly identified for precise datum transformations (see https://github.com/cf-convention/cf-conventions/wiki/OGC-WKT-Coordinate-System-Issues for more details). +Valid datum names and their associated parameters are given in **`horiz_datum.csv`** (OGC_DATUM_NAME column), following Table 2 in <>. +The valid names are obtained by transforming the EPSG name using the following rules (used by OGR and Cadcorp): convert all non alphanumeric characters (including +) to underscores, then strip any leading, trailing or repeating underscores. +This is to ensure that named datums can be correctly identified for precise datum transformations (see <> for more details). Corresponds to a OGC WKT DATUM node name. | **`inverse_flattening`** | N @@ -501,7 +502,7 @@ Used by perspective-type map projections, for example the Vertical Perspective P | **`prime_meridian_name`** | S | The name of the prime meridian associated with the geodetic datum. -Valid names are given in <> (prime_meridian.csv). +Valid names are given in **`prime_meridian.csv`**, following Table 2 in <>. Corresponds to a OGC WKT PRIMEM node name. |**`projected_crs_name`** | S @@ -510,7 +511,7 @@ Corresponds to a OGC WKT PROJCS node name. | **`reference_ellipsoid_name`** | S | The name of the reference ellipsoid. -Valid names are given in <> (ellipsoid.csv). +Valid names are given in **`ellipsoid.csv`**, following Table 2 in <>. Corresponds to a OGC WKT SPHEROID node name. | **`scale_factor_at_central_meridian`** | N