gravityGE R/Julia Package

The gravityGE package implements a one-sector Armington-CES gravity model with general equilibrium (GE) effects. This model is designed to analyze international and domestic trade by capturing the impacts of trade costs and policy changes within a general equilibrium framework. Additionally, it includes a local parameter to run simulations on productivity. The package provides functions for calibration, simulation, and analysis of the model.

Key Features

• One-Sector Armington-CES Framework: Implements the standard trade model with product differentiation by country of origin
• General Equilibrium Effects: Captures economy-wide impacts of trade policy changes
• Trade Cost Analysis: Analyzes the effects of various trade costs on bilateral trade flows
• Policy Simulation: Evaluates the impacts of trade policy changes within a GE framework
• Productivity Analysis: Includes parameters for running productivity-based simulations
• Calibration Tools: Provides functions for model calibration and parameter estimation

R Installation

# Install from CRAN
install.packages("gravityGE")

# Load the package
library(gravityGE)

CRAN Package: https://CRAN.R-project.org/package=gravityGE

Julia Installation

Install the JuliaHub package

# Installing the package in environment
import Pkg
Pkg.add(GravityGE)

using gravityGE

JuliaHub Package:https://juliahub.com/ui/Packages/General/GravityGE

Install the developer’s version

using Pkg
Pkg.add(url="https://github.com/noejn2/GravityGE.jl")