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Add support for reg 92.1.8 where lon increment not given #261

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merged 1 commit into from Apr 27, 2021

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m1dr
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@m1dr m1dr commented Apr 6, 2021

Per regulation 92.1.8, longitudes are limited to the range 0 to 360 degrees. This PR adds support for calculating iDirectionIncrement when not given (i.e. resolutionAndComponentFlags bit 3 is 0) where longitudeOfFirstGridPoint and longitudeOfLastGridPoint span the prime meridian in GDTs 0 and 40 and siblings.

@jamesp
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jamesp commented Apr 8, 2021

Hi @m1dr, we had a CI problem that's now been fixed, would you mind rebasing on master? The CI tests should then run properly.

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m1dr commented Apr 8, 2021

Hi @jamesp, thanks for the heads up. Saw they'd failed for reasons unrelated to my changes but wasn't sure who to contact.

@lbdreyer
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This is great! Thanks @m1dr! I'm going to merge, and then this will be available in the 0.17 release. We're hoping to get that out in the next couple of months

@lbdreyer lbdreyer merged commit 9cec4d6 into SciTools:master Apr 27, 2021
iris-grid 0.17 release automation moved this from To do to Done Apr 27, 2021
@m1dr m1dr deleted the handle_longitude_mod branch April 27, 2021 16:35
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3 participants