Hello Michael

Le 07/04/2020 à 17:16, Michael Arneson a écrit :

However when we try to create a Modified Azimuthal Equidistant projection using the following code segments a NoSuchAuthorityCode Exception is thrown

For the first case (create from code), it is because "EPSG:9832" is the code of the operation method, not a CRS code. An example of CRS code using that operation method is EPSG:3295 (Guam 1963 / Yap Islands).

For the second case (create from WKT), it is because of the following line:

   PROJECTION["Azimuthal_Equidistant"]

The projection name is "Modified Azimuthal Equidistant" instead than "Azimuthal_Equidistant". Doing the name replacement in the WKT makes it work.

Actually SIS implements the two following projections:

 * Modified Azimuthal Equidistant — this is EPSG:9832
 * Azimuthal Equidistant (Spherical) —not defined by EPSG

We could add "Azimuthal_Equidistant" as an alias for one of those two methods, but it is not clear to me which one it should be.

    Martin


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