grep error
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I run R Version 1.8.0 (2003-10-08) on a Mac Dual 500 MHz
G4 under OS X 10.2.8 with 1.5 GB RAM and 80 GB HD.
I have downloaded the nlmeODE package 0.2-1.
Using the pdf file I am working the example for TheophODE.
I defined OneComp as given.
> OneComp
$DiffEq
$DiffEq$dy1dt
~-ka * y1
$DiffEq$dy2dt
~ka * y1 - ke * y2
$ObsEq
$ObsEq$c1
~0
$ObsEq$c2
~y2/(CL * ke)
$Parms
[1] "ka" "ke" "CL"
$LogParms
[1] TRUE
$States
[1] "y1" "y2"
$Init
$Init[[1]]
[1] 0
$Init[[2]]
[1] 0
$JAC
[1] TRUE
$SEQ
[1] FALSE
When I use nlmeODE an error is returned.
> TheophModel <- nlmeODE(OneComp, TheophODE)
Error in grep(pattern, x, ignore.case, extended, value, fixed)
:
invalid regular expression