Changes between Version 1 and Version 2 of NetCDF_ProjectionTestingStatus


Ignore:
Timestamp:
Oct 17, 2011, 10:27:19 PM (13 years ago)
Author:
pds
Comment:

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  • NetCDF_ProjectionTestingStatus

    v1 v2  
    66
    77||'''Projection'''||'''Export- CF compliance'''||'''Export - openable by NetCDF Java'''||Updated||Note||
    8 ||AEA||Yes||Yes||18/10/11||Tested 2 Std Parallels export only||
     8||AEA||Yes||Yes||18/10/11||Tested regular 2SP version - see AEA note below.||
    99||AzEq||Yes||No||18/10/11||See (1) below||
    1010||LAzEqA||Yes||Yes||18/10/11||||
    11 ||LC-2SP||Yes||Yes||18/10/11||The OGC WKT Lambert_Conformal_Conic_2SP maps clearly to LC in CF-1 with 2 std parallels. Am not sure if OGC WKT Lambert_Conformal_Conic_1SP can be converted directly to LC in CF-1 using just 1 std parallel.||
    12 ||LCEA||Yes||No||18/10/11||Works for 1 std parallel version. CF-1 claims can use a scale_factor instead of std parallel, not sure WKT equiv||
     11||LC-2SP||Yes||Yes||18/10/11||Tested 2SP version - CF-1 claims to have a 1SP version, but params quite different to OGC WKT so not tested. See note below.||
     12||LCEA||Yes||No||18/10/11||Tested regular OGC WKT with 1 std parallel version (CF-1 has alternative, see notes below). See (1) below re NetCDF-Java loading.||
    1313||M-1SP||Yes||No||18/10/11||See (1) below||
    14 ||M-2SP||Yes||Yes*||18/10/11||Loads in NetCDF Java and IDV, but appears translated from expected position||
     14||M-2SP||Yes||Yes*||18/10/11||Parameters appear correct, loads in NetCDF Java and IDV, but appears translated from expected position||
    1515||Ortho||Yes||Yes||18/10/11||||
    16 ||Polar St||Yes*||?||18/10/11||See (2) below||
    17 ||Rot Pole||N||N||18/10/11||See (3) below||
     16||Polar St||Yes*||?||18/10/11||See projection comments below||
     17||Rot Pole||N||N||18/10/11||See projection comments below||
    1818||St||Yes||Yes||18/10/11||||
    1919||TM||Yes||Yes||18/10/11||||
    2020
    21 General notes:
     21'''General notes''':
    2222
    2323(1) For projections that won't load correctly as referenced grids in NetCDF Java, we've contacted the developers to ask for clarification/testing support. In most cases, the CF-1 attributes seem appropriate.[[BR]]
    24 (2) Polar stereographic: This projection's parameters in CF-1 are quite unusual, and significantly different from http://www.remotesensing.org/geotiff/proj_list/polar_stereographic.html. In particular finding a CF-1 equivalent for 'latitude of natural origin' is proving difficult.
    25 (3) Rotated pole: Not able yet to test: as seems GDAL needs support of advanced proj4 strings that can handle rotated coord systems.
     24
     25'''Issues with CF-1 implementation of specific projections''':
     26
     27 * AEA (Albers Equal Area): The OGC WKT version has 2 Std parallels - whereas the CF-1.5 version says it can have either 1 or 2 std parallels. How would the 2SP version be converted to a CF 1SP version, and vice-versa?
     28 * LCC (Lambert Conformal Conic): The OGC WKT 'Lambert_Conformal_Conic_2SP' maps clearly to LC in CF-1 with 2 std parallels. The CF-1 spec claims that a 1SP version can be used, but it doesn't include a 'scale_factor' as does the OGC WKT 'Lambert_Conformal_Conic_1SP'. Is there a way to do this conversion?
     29 * LCEA (Lambert Cylindrical Equal Area): The CF-1 conventions claim this can be encoded with a 'scale_factor_at_projection_origin' alternative to standard parallel - how would this conversion be done back from OGC WKT?
     30 * Polar St (Polar Stereographic): This projection's parameters in CF-1 are quite unusual, and significantly different from http://www.remotesensing.org/geotiff/proj_list/polar_stereographic.html. In particular finding a CF-1 equivalent for 'latitude of natural origin' is proving difficult.
     31 * Rot pole (Rotated Poke): Not able yet to test: as seems GDAL needs support of advanced proj4 strings that can handle rotated coord systems.