Hello Thierry
Le 28/02/2022 à 22:20, Thierry Danard a écrit :
When I call new
MyCRSBuilder(....).getCoordinateOperationFactory().getOperationMethod("GeoTIFF:4");
I get
Exception in thread "main" org.opengis.util.NoSuchIdentifierException:
No operation method found for name or identifier “GeoTIFF:4”.
"GeoTIFF:4" stands for CT_ObliqueMercator_Laborde, which is not yet
implemented [1]. If replacing by "GeoTIFF:3" (which stands for
CT_ObliqueMercator), then it works.
I am unsure how the GeoTIFF:xxx operations get plugged in/recognized
by the code.
There is no initializer to call or configuration file, it should be
automatic. All authority codes (GeoTIFF, EPSG, NetCDF, etc.) are
declared in this directory:
core/sis-referencing/src/main/java/org/apache/sis/internal/referencing/provider/
Each file in this directory declares the identifier for a single
operation. For example:
* Mercator1SP.java declares EPSG:9804, GeoTIFF:7 and MapInfo:10.
* Mercator2SP.java declares EPSG:9805, MapInfo:26 and S-57:8.
The declarations appear in the Java code doing the initialization of the
PARAMETERS field in each class. Unfortunately we do not have a this time
a single place listing all GeoTIFF codes (for example) in a tabular
format. Something not too far (should be improved) is [2], which is
generated automatically from the declaration in above-cited Java codes.
I don't mind the hard-coded logic so much. I'd rather contribute a
standalone version of the CRSBuilder that essentially takes a map of
<Short, Object> or <Integer, Object> in its constructor. This would
make it easier to unit test, and directly reusable in my own use case.
My use case doesn't need the TIFF file parsing part of the Apache SIS
storage module, just the interpretation of the GeoTIFF meta data itself.
A possible approach could be that, after you got a version that
satisfies your needs, do a "diff" between that version and the current
CRSBuilder so we can see what could be the changes to apply?
Martin
[1] https://issues.apache.org/jira/browse/SIS-222
[2] https://sis.apache.org/tables/CoordinateOperationMethods.html
