intent-solutions-io/nixtla-exogenous-integrator
000-docs/000a-planned-skills/core-forecasting/nixtla-exogenous-integrator/SKILL.md
Incorporates external variables (holidays, weather, events) into TimeGPT forecasts to improve accuracy. Use when forecasts require external data, holidays impact sales, or weather affects demand. Trigger with "include holidays", "add weather data", "integrate events".
$ install --global
skillsauthnpx skillsauth add intent-solutions-io/plugins-nixtla nixtla-exogenous-integratorInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- nixtla-exogenous-integrator
- description:
- |
- allowed-tools:
- Read,Write,Bash,Glob,Grep
- version:
- 1.0.0
Nixtla Exogenous Integrator
Augments TimeGPT forecasts with exogenous variables for increased accuracy.
Purpose
Enhances time series predictions by integrating external data sources like holidays, weather, and events.
Overview
This skill enriches TimeGPT forecasts by considering external factors influencing time series data. It reads exogenous data from CSV files, aligns it with the historical data, and passes both to the TimeGPT API. This integration improves forecast accuracy, especially when events or external conditions affect the time series. The skill outputs an augmented forecast incorporating the impact of these exogenous variables.
Prerequisites
Tools: Read, Write, Bash, Glob, Grep
Environment: NIXTLA_TIMEGPT_API_KEY
Packages:
pip install nixtla pandas matplotlib
Instructions
Step 1: Prepare data
Read historical time series CSV and exogenous variables CSVs. Ensure they have a common date ('ds') column.
Script: {baseDir}/scripts/load_data.py
Usage:
python {baseDir}/scripts/load_data.py data.csv holidays.csv
The loader expects:
- Historical data:
unique_id,ds,ycolumns - Exogenous data:
dscolumn plus feature columns
Step 2: Align data
Merge historical and exogenous dataframes based on the 'ds' column using the alignment script.
Script: {baseDir}/scripts/align_data.py
The script validates that both datasets share a 'ds' column and checks for column name conflicts. It performs a left join to preserve all historical timestamps.
Step 3: Generate forecast
Run the integration script with your data files and forecast parameters.
Script: {baseDir}/scripts/integrate_exogenous.py
Usage:
python {baseDir}/scripts/integrate_exogenous.py \
--input data.csv \
--exogenous holidays.csv \
--horizon 14 \
--freq D
Parameters:
--input: Historical time series CSV file--exogenous: Exogenous variables CSV file (optional)--horizon: Number of periods to forecast--freq: Time series frequency (D=daily, H=hourly, M=monthly, etc.)
The script automatically:
- Loads and validates both datasets
- Aligns data on the 'ds' column
- Prepares exogenous variables (converts to numeric, fills missing values)
- Calls TimeGPT API with exogenous features
- Saves forecast and generates visualization
Output
- forecast_exogenous.csv: Predictions with integrated exogenous variables.
- forecast_plot.png: Visualization of the forecast with historical data and exogenous variables.
Error Handling
-
Error:
Exogenous data missing 'ds' columnSolution: Rename the date column in the exogenous data to 'ds'. -
Error:
Mismatch in date range between historical and exogenous dataSolution: Ensure the exogenous data covers the entire historical and forecast period. -
Error:
Exogenous variables have NaN values in the forecast horizonSolution: Provide future values for exogenous variables for the entire forecast horizon. -
Error:
TimeGPT API rejected exogenous variablesSolution: Ensure exogenous variables are numeric and compatible with the TimeGPT API schema. -
Error:
NIXTLA_TIMEGPT_API_KEY environment variable not setSolution: Set your TimeGPT API key as an environment variable before running the script.
Examples
Example 1: Holiday impact on sales
Input (data.csv):
unique_id,ds,y
store_1,2024-01-01,100
store_1,2024-01-02,120
store_1,2024-01-03,115
Input (holidays.csv):
ds,holiday
2024-01-01,1
2024-01-02,0
2024-01-03,0
2024-01-04,0
Command:
python {baseDir}/scripts/integrate_exogenous.py \
--input data.csv \
--exogenous holidays.csv \
--horizon 7 \
--freq D
Output (forecast_exogenous.csv):
unique_id,ds,TimeGPT,TimeGPT-lo-90,TimeGPT-hi-90
store_1,2024-01-04,125,110,140
store_1,2024-01-05,128,113,143
Example 2: Weather affecting demand
Input (data.csv):
unique_id,ds,y
grid_1,2024-01-01 00:00,5000
grid_1,2024-01-01 01:00,5100
Input (weather.csv):
ds,temperature
2024-01-01 00:00,10
2024-01-01 01:00,8
2024-01-01 02:00,7
Command:
python {baseDir}/scripts/integrate_exogenous.py \
--input data.csv \
--exogenous weather.csv \
--horizon 24 \
--freq H
Output: Hourly forecast incorporating temperature trends.
Resources
- TimeGPT exogenous variables guide: https://docs.nixtla.io/
- Holiday calendar generation: https://github.com/dr-prodigy/python-holidays
- Weather API integration: https://openweathermap.org/api
- Scripts:
{baseDir}/scripts/directory contains all executable code
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