micEcon

News

• December 2008:
  The functions for writing input files for and reading output files of FRONTIER 4.1 ("front41WriteInput" and "front41ReadOutput") have been moved to the frontier package.
• September 22, 2008:
  The micEcon package is developed on R-Forge now. Its summary page is available here.

What is micEcon?

• micEcon is an extension package for the "language and environment for statistical computing and graphics" called R.
• micEcon provides functions for microeconomic analysis and microeconomic modelling.

What can micEcon do?

• Demand Analysis with the "Almost Ideal Demand System" (AIDS): The AIDS is the most popular demand system in empirical demand analysis. micEcon provides functions for:
  • econometric estimation using the popular but inaccurate "Linear Approximation" (LA-AIDS) and the accurate "Iterated Linear Least Squares Estimator" (ILLE)
  • searching for the intercept of the translog price index (alpha_0) that gives the best fit to the model
  • optional imposition homogeneity and symmetry
  • checking for monotonicity and concavity
  • predicted quantities and expenditure shares
  • Marshallian (uncompensated) price elasticities, Hicksian (compensated) price elasticities, income elasticities, and their standard errors
• Production Analysis with the "Symmetric Normalized Quadratic" (SNQ) profit function: The SNQ profit function is often used in microeconomic production models because it allows the imposition of global convexity. micEcon provides functions for:
  • econometric estimation
  • imposition of global convexity using a recent two-step estimation procedure
  • price elasticities of inputs and outputs and their standard errors
  • fixed factor elasticities
  • shadow prices of fixed factors
  • Hessian matrix and its derivatives with respect to coefficients
  • predicted profits and netput quantities including the standard errors and the confidence limits of prediction
• Analysis with Translog Functions:
  • econometric estimation
  • calculation of derivatives with respect to regressors
  • calculation of (bordered) Hessian matrices with respect to regressors
  • checking monotonicity (positive or negative)
  • checking curvature (quasiconcavity, concavity, quasiconvexity, convexity)
  • creating a matrix that can be used to impose monotonicity using a two-step procedure
• Analysis with Quadratic Functions:
  • econometric estimation
  • calculation of derivatives with respect to regressors
• Tools for Matrices:
  • inserting additional rows and columns into matrices
  • creating symmetric and triangular matrices
  • conversion between a symmetric matrix and a vector of its linear independent values
  • tests for positive and negative semidefiniteness

Who has written micEcon?

• Arne Henningsen

Where can I get micEcon?

• The released version is available on CRAN
  • You can download the source code, binaries for MacOS X and MS-Windows, and the reference manual from http://cran.r-project.org/web/packages/micEcon/index.html.
  • You can install the package by typing at the R prompt (if you have internet access):

     install.packages( "micEcon" )

• The current development version is available on R-Forge
  • You can download the source code and binaries for MacOS X and MS-Windows from http://r-forge.r-project.org/R/?group_id=257.
  • You can install the package by typing at the R prompt (if you have internet access):

     install.packages( "micEcon", repos="http://R-Forge.R-project.org" )

Under which license is micEcon released?

• Under the GNU General Public License (GPL)

How can I contact you?

• Send an email to info(at)micEcon.org
• Take a look at http://www.arne-henningsen.name