Loop in the Makefile

[Fuhan-Yang]

          I strongly recommend you move away from for loops and toward functions here

This is where the Makefile or Snakemake will come in handy. Like, you're doing many different jobs:

• For each combination of forecast date and model, do the forecast
• For each model and score function (and forecast horizon?), score the model using the forecasts from the previous step
• Report these out in a table?
• Make some figures?

So rather than saying "what do I need to do for each date?" and putting that into a for loop, instead say "what are the different jobs I need to do?" and write a function for each one.

There will be looping logic somewhere, but it might be in the Makefile or snakefile

Originally posted by @swo in #82 (comment)