Florian Maczek

Fix derivation of `price_ref` from `PRICE_EMISSION`

1

#### Code sample or context Trying to add and calibrate MACRO with an existing MESSAGEix-GLOBIOM scenario without exogenous input for `price_ref`, `demand_ref` and `cost_ref`: ```python import ixmp import message_ix from...

Add .tools.graph_viz_tool

4

Following on the 2024-12-12 MESSAGE meeting and #580, this PR aims to add a tool that can visualise a MESSAGEix model structure as a graph. The initial commit adds the...