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Documentation should mention quantities (grootheden) of parameters #138

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Huite opened this issue Jan 11, 2024 · 2 comments
Open

Documentation should mention quantities (grootheden) of parameters #138

Huite opened this issue Jan 11, 2024 · 2 comments

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@Huite
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Huite commented Jan 11, 2024

Coming from a question that was e-mailed to me: the TimML API reference currently does not mention what the units or quantities are. Not having units is a feature, just like MODFLOW, as some people want to compute in m/d, ft/d, m/s, etc.
This is worth adding to TimML (and TTim), but also to the QGIS-Tim Docs (that admittedly need a lot of other work too...).

It would be worthwhile to add the quantities like MODFLOW does in the documentation, e.g. L/T for length over time, L^3 for volumes, etc.

@JoerivanEngelen
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JoerivanEngelen commented Jan 24, 2024

Note:
Not having units holds true for the TimML and TTIM docs, but not for QGIS-Tim.

Lengths between x,y locations are determined based on the CRS. These have a unit (e.g. meters for most projected ones).
There's even a check whether a CRS is used which uses meters or feet

More explanation on quantities is good, e.g. whether a parameters is in L^3/T or L/T, but for QGIS-Tim you can already reduce L^3/T to: m^3/T or feet^3/T

@Huite
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Huite commented Feb 8, 2024

Good point. The time unit is also implicitly defined when writing TTim output: the float-based time is interpreted as (decimal) days since the reference date.

@Huite Huite closed this as completed Feb 8, 2024
@Huite Huite reopened this Feb 8, 2024
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