Matthew D. Furia MattNapsAlot
MattNapsAlot
/ lma.logfit.R
Created
September 18, 2012 03:55
Fitting a 4-parameter logistic curve using the Levenburg-Marquardt algorithm
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| require('minpack.lm'); | |
| ###### START FUNCTION DEFINITIONS ########### | |
| ##Coded by M. Furia June 2007 | |
| lma.dologfit = function(x,y){ | |
| compute.logistic.x = function(y,min,max,infl,slope){ | |
| return(infl - (1/slope)*log10((max - min)/(y - min)- 1)); | |
| } | |
| # define the logistic function |
MattNapsAlot
/ install_version.R
Created
October 6, 2012 16:44
bug-fixed version of Hadley Wickham's install_version() method from the devtools package
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| library(devtools) | |
| install_version <- function (package, version = NULL, repos = getOption("repos"), | |
| type = getOption("pkgType"), ...) | |
| { | |
| contriburl <- contrib.url(repos, type) | |
| available <- available.packages(contriburl) | |
| ## converting the version to numeric breaks packages that use dashes in their version numbers | |
| # if (!is.null(version)) { |