Ok, found it. It is in the temporalCapabilities... So given a loaded netcdf/mesh with time. Easiest is the firstTimeStepDuration(i) of QgsMeshDataProviderTemporalCapabilities:
>>> p = iface.activeLayer().dataProvider().temporalCapabilities() >>> p <qgis._core.QgsMeshDataProviderTemporalCapabilities object at 0x7fa958267e20> >>> p.timeExtent() <QgsDateTimeRange:[2022-11-07T07:00:00Z, 2022-11-08T06:00:00Z]> >>> p.temporalUnit() <TemporalUnit.Hours: 3> <<< ????? # datasetTime() Returns the relative time in milliseconds of the dataset >>> p.datasetTime(QgsMeshDatasetIndex(0,0)) 3600000 >>> p.datasetTime(QgsMeshDatasetIndex(0,1)) 7200000 >>> p.datasetTime(QgsMeshDatasetIndex(0,2)) 10800000 # firstTimeStepDuration() Returns the duration of the first time step of the dataset group with index \a group # in milliseconds p.firstTimeStepDuration(0) 3600000 == 3600 s = 1 hours p.firstTimeStepDuration(0) 21600000 == 21600 s == 360 minute == 6 hours Only strange thing is that the temporalUnit() always returns 'hours', while the actual data time is relative in minutes... Regards, Richard Duivenvoorde On 3/7/23 14:18, Richard Duivenvoorde via QGIS-Developer wrote:
Hi, When loading (temporal) Netcdf files (as MeshLayers), the 'timestep' that you see in the Temporal Controller does not change. I had a look at the api, but could not find any indication of knowledge by the QgsMeshLayer of the size of the timesteps of the data. Within netcdf's it is common to define the timesteps as something like: "minutes since 2022-11-27 16:00:00.0Z" then the first set has 0, and then the next one for example 60 for hourly data or 10 for 10-minute data. Question: IS a temporal mesh layer aware of the timesteps used? Or if not: I seem not to be able to inspect the data array of the 'time' dimension. Should/can I? IF so, we could we could deduct from the first 2 or 3 timesteps, the size of the timestep. Anybody a hint or idea? Regards, Richard Duivenvoorde _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
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