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ILR: Stata module to compute a isometric log-ratio (ILR) transformation of a set of variables

Author

Listed:
  • Giacomo Zanello

    (University of Reading)

Programming Language

Stata

Abstract

ilr computes a isometric log-ratio (ILR) transformation on a set of variables (n>2). ILR transformation is a mathematical technique used in compositional data analysis. Compositional data are parts of a whole and carry relative information, typically constrained by a constant sum, such as 100% or 1440 (e.g. the minutes in a day). This type of data often arises in economics, environmental science, ecology, and other fields.

Suggested Citation

  • Giacomo Zanello, 2024. "ILR: Stata module to compute a isometric log-ratio (ILR) transformation of a set of variables," Statistical Software Components S459290, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s459290
    Note: This module should be installed from within Stata by typing "ssc install ilr". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/i/ilr.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/i/ilr.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/g/gdp.dta
    File Function: supplementary data file
    Download Restriction: no
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