[FEATURE] [MESH] add new 3d stacked mesh averaging methods (top, bottom, sigma, depth, height, elevation)
see https://fvwiki.tuflow.com/index.php?title=Depth_Averaging_Results for description of the methods. method can be selected for 3d stacked mesh dataset in the new widget added for QGIS 3.12 in the mesh layer styling dialog
These should NOT be used, and auth:code or WKT definitions used instead.
Unfortunately some use of these methods are very heavily entangled around
other code, so we can't deprecate all of them until 4.0
Constructing CRS using Postgis srids is highly discouraged,
and instead CRSes should always be constructed using auth:id
codes or WKT strings.
QGIS 4.0: The logic should be isolated into the postgres
provider alone, and not exposed to stable API
[FEATURE] [mesh] Load reference time from MDAL when available
Also adds combo box to let the user set the provider time unit. This is particularly useful when MDAL incorrectly recognised the time units in the raw dat format (for example format does nof follow spec and it is not possible to determine if time interval is in hours or days)
fix#32186fix#33399fix#31933
by QgsCoordinateTransformContext.calculateCoordinateOperation corresponds
to the reverse of what's actually required.
Gross API, but it's the best we can do until proj has a method to
invert a coordinate operation so that we can return the proper
inverse operation proj string from calculateCoordinateOperation
(without resorting to fragile proj string parsing/mangling)
from the proj string via the transform context
This isn't possible -- only proj coordinate operations constructed
from a src/dest CRS pair can be normalized, not those constructed
from a proj string.
It was redundant in any case, since we always normalize the available
operations before giving users a choice of them.
So just add some big bold warnings to the dox in case anyone is
manually manipulating and adding custom operations, that these
also MUST be pre-normalized
Refs #33121, conversation in https://github.com/OSGeo/PROJ/issues/1794
