facebook/prophet

add support for regressors in make_future_dataframe

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#2,068 opened on Nov 15, 2021

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 (4 comments) (3 reactions) (0 assignees)Python (4,451 forks)batch import
enhancementgood first issue

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Description

make_future_dataframe doesn't support regressors currently. So code like:

m = Prophet()
m.add_regressor('var')
m.fit(df)
forecasts = m.predict(m.make_future_dataframe(periods=7))

gives an error like:

ValueError: Regressor 'var' missing from dataframe when attempting to generate forecasts

I know prophet may not know what exact values to put for var in each of the rows added but it can create a dataframe with thes(e) column(s) with default values for this.

There is a post on stackoverflow a year ago looking for this: https://stackoverflow.com/questions/64822488/how-to-use-prophets-make-future-dataframe-with-multiple-regressors

Contributor guide

Research direction
Extend the make future dataframe method to accept keyword arguments for regressor values or default to NaN, and ensure the DataFrame includes all regressor columns added via add regressor.
Tech stack
python
Domain
backenddata
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PythonProphet
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70