Behnam Zakeri

Filtering out outliers in data

2

It would be nice to have a feature/method to exclude some outliers in timeseries data. This can be done, for example, as a new option under `pyam.IamDataFrame().validate()`. Method of calculation...

Assignment of `capacity_factor` is not properly working for subannual time slices

4

In `message_ix\model\MESSAGE\data_load.gms`, there are two equations (see the links below) related to the assignment of `capacity_factor`: 1. The first equation assigns `capacity_factor = 1` to the missing entries for `capacity_factor`...

Enhancing storage equations by considering `mode` and `lvl_temporal`

4

This PR addresses #632 by adding `mode` to the mapping set of storage technologies (`map_tec_storage`) and also to storage equations. More details: This change means re-initializing the existing set of...

Re-initializing existing items

2

In the current code of `message_ix`, the user can specify new items in the file `models.py` to be initialized as new _sets_, _parameters_, or _variables_ in a scenario. However, it...

The storage equations in `message_ix` work based on a mapping of charger-discharge technologies to their respective storage device, through the set `map_tec_storage`. However, this mapping set is defined only with...

A tutorial for adding an upper bound on investment

2

This PR is to demonstrate how GAMS files can be changed for adding a new variable or parameter. This was part of the hands-on session of the MESSAGEix Community meeting...

`message_ix.Scenario.rename()` is supposed to rename a set element, i.e., replacing the old name with a new name in all `message_ix` sets and parameters. However, this is not the case, i.e.,...

Techs incorrectly excluded from `capacity_factor` via `map_tec_time`

4

It seems in [the GAMS formulation](https://github.com/iiasa/message_ix/blob/705f55f648ede9a9a927411a640d37620f354020/message_ix/model/MESSAGE/data_load.gms#L148) some technologies are omitted from `capacity_factor`, even though defined by the user. These technologies do not have `input`, `output` commodity defined and do not...

Zero values in GDX

2

Due to efficiency considerations in GAMS for storing sparse data, zero values in GDX files are ignored by default when loading data of a model. It seems for overcoming this...

At the moment calling 'read_excel' reads all sets and parameters from Excel. This function can also be used for reading only one or a group of parameters from excel, for...