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createOperations(): improvement for "NAD83(CSRS) + CGVD28 height" to "NAD83(CSRS) + CGVD2013(CGG2013) height" #2976

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Dec 9, 2021

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@rouault rouault commented Dec 8, 2021

That transformation involves doing CGVD28 height to CGVD2013(CGG2013)
height by doing:

  • CGVD28 height to NAD83(CSRS): EPSG registered operation
  • NAD83(CSRS) to CGVD2013(CGG2013) height by doing:
    • NAD83(CSRS) to NAD83(CSRS)v6: ballpark
    • NAD83(CSRS)v6 to CGVD2013(CGG2013): EPSG registered operation

…"NAD83(CSRS) + CGVD2013(CGG2013) height"

That transformation involves doing CGVD28 height to CGVD2013(CGG2013)
height by doing:
- CGVD28 height to NAD83(CSRS): EPSG registered operation
- NAD83(CSRS) to CGVD2013(CGG2013) height by doing:
  * NAD83(CSRS) to NAD83(CSRS)v6: ballpark
  * NAD83(CSRS)v6 to CGVD2013(CGG2013): EPSG registered operation
@rouault rouault merged commit 7dece4d into OSGeo:master Dec 9, 2021
github-actions bot pushed a commit that referenced this pull request Dec 9, 2021
createOperations(): improvement for "NAD83(CSRS) + CGVD28 height" to "NAD83(CSRS) + CGVD2013(CGG2013) height"
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