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David Firth, software: Kuvee and qvcalc

Description

These software tools compute quasi-variances for estimates of a group or factor effect in a generalized linear model (including linear models, logistic regression, log linear models, hazard models, etc.) The software can be used either in conjunction with R (as contributed package qvcalc) or Xlisp-Stat on a PC, Mac or Unix computer; or remotely through the Kuvee web-based calculator.

The current, stable release of qvcalc is published on CRAN, at https://cloud.r-project.org/web/packages/qvcalc.

The development version, which may be more recent but less stable, is maintained on github at https://github.com/DavidFirth/qvcalc.

Installation in R: either

install.packages("qvcalc")

[for the stable, CRAN package]; or

library(devtools)
install_github(DavidFirth/qvcalc)

[for the development version on github]

(Kuvee is new in 2013 — developed and maintained by Shaun Killingbeck. This is a client-side calculator, which offers improved facilities and performance and which replaces the server-side calculator that was previously available here.)

Documentation

Documentation is vailable at two levels of detail:

  1. a brief description of the methodology, for users of the web-based Kuvee calculator
  2. a more complete manual, "Quasi-variances in Xlisp-Stat and on the Web", intended mainly for those who use the method in conjunction with Xlisp-Stat on their own computer. Cite as: Firth, D (2000), Quasi-variances in Xlisp-Stat and on the web, Journal of Statistical Software 5.4, 1-13.

The R package qvcalc comes with its own documentation.:

Download

For use with R:

The R package qvcalc is available at CRAN (released versions) and Github (development version). See above for installation in R.

For use with Xlisp-Stat:

If you want to use the QV Calculator on your own computer in conjunction with Xlisp-Stat, the file needed is:

After downloading qvcalc.lsp simply Load it into Xlisp-Stat to make available the QV Calculator.

The ship-damage example discussed in the documentation is in a separate file:

Version history for the R package "qvcalc"

Please see the NEWS file (on Github).


QV Calculator

© David Firth, 1999. This software carries ABSOLUTELY NO WARRANTY: feel free to use it, but use it at your own risk!

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