From 16f5b1d3c0136413e92b2be0f20d365e92e9cd1c Mon Sep 17 00:00:00 2001
From: jranke <jranke@edb9625f-4e0d-4859-8d74-9fd3b1da38cb>
Date: Tue, 18 May 2010 12:58:38 +0000
Subject: Much more complete version that was just submitted to CRAN.

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/kinfit/pkg/mkin@9 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
---
 R/mkin_wide_to_long.R | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 R/mkin_wide_to_long.R

(limited to 'R/mkin_wide_to_long.R')

diff --git a/R/mkin_wide_to_long.R b/R/mkin_wide_to_long.R
new file mode 100644
index 00000000..6db2f337
--- /dev/null
+++ b/R/mkin_wide_to_long.R
@@ -0,0 +1,13 @@
+mkin_wide_to_long <- function(wide_data, time = "t")
+{
+  colnames <- names(wide_data)
+  vars <- subset(colnames, colnames != time)
+  n <- length(colnames) - 1
+  if (!(time %in% colnames)) stop("The data in wide format have to contain a variable named ", time, ".")
+  long_data <- data.frame(
+    name = rep(vars, each = length(wide_data[[time]])),
+    time = rep(wide_data[[time]], n),
+    value = unlist(wide_data[vars]),
+    row.names = NULL)
+  return(long_data)
+}
-- 
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