Hi guys,
when working with linked models I find it quite useful to have only the relevant time frames for each model set up. Otherwise things just get overly cluttered.
This triggers the warning
quite frequently.
For the most part, it “only” causes missing values which can be overcome easily by following your guidance on setting 0 if variable = none
However, one issue that may be less obvious comes up when you’re using start dates stored in a variable of a linked model with a deviating time frame and compare them to the current timeStep in the local model, like
if myLinkedStartDate <= timeStep then 1 else 0
Since timeSteps and ultimately also Dates stored in Variables are just the IDs of the timesteps, you end up comparing apples with oranges easily.
What could help here would be a function to quickly convert a timeStep or stored date value back to an actual date, or essentially to realign timeStep IDs / stored date value IDs to the current model.
You already have the year_from_date and month_from_date functions, which lead to the assumption that you can actually use these in order to reconstruct a working comparison such as
if
date(year_from_date(myLinkedStartDate), month_from_date(myLinkedStartDate), 1)
<=
date(year_from_date(timeStep), month_from_date(timeStep), 1)
then 1 else 0
Unfortunately this currently still interprets the pure ID in myLinkedStartDate back to a date in the time frame reference model of the local model, rather than returning the actual month (as the function name suggests) … so that new function would have to be able to use the time frame reference model of the source model to return its date values.
Thanks & Regards
Fabian
