"variable" arg for multiple input processes

[aulemahal]

The current variable argument takes only a string, which is not useful for processes taking multiple input netCDFs. I would suggest having a variables argument, a mapping from arg name to variable name. Multi-input processes would use that one instead of the other. compute_indices could contain the logic to manage this.

[huard]

Why not just mirror the arguments name ? I think that with the new parameter metadata this would now be possible, no ?

[huard]

To be clear, I mean having a WPS input called tas, pr, etc instead of a generic "variable".

[aulemahal]

Hum, I'm thinking about the case where the variable names in the dataset are not the same as the argument names. With only one variable, the current trick works well, but not when there are more. More specifically for using datasets with more than one variable, at least one having the wrong name.

I wanted to use the sea_ice_area process with xclim's test data, but the inputs are sic and area, and the variable in the datasets are siconc and areacello.

[huard]

Je pige. Un peu lent ce matin...
👍

[aulemahal]

So my idea of a mapping seems not possible because there are no corresponding input type in pyWPS... I was looking for a dict and it doesn't seem to exist.

Another solution would be to have, for each variable, a corresponding {var}_name input.

For example, for my sea_ice_area example, sic and area would be given datasets and there would also be sic_name='siconc' and area_name='areacello'. Sadly, this will break current processes by moving variable to a new input, with a differing name depending on the process...