On Nov 28, 2010, at 7:16 AM, Stephen Liu wrote:
Hi Stefan,
Tks for your advice.
snipped
Installation went through w/o problem.
library(Ecdat)
data()
Data sets in package ‘datasets’ NOT 'Ecdat'
??Ecdat
...
Ecdat::Caschool The California Test Score Data Set
Ecdat::Griliches Wage Datas
Ecdat::MCAS The Massashusets Test Score Data Set
Ecdat::MunExp Municipal Expenditure Data
Ecdat::Orange The Orange Juice Data Set
Ecdat::Solow Solow's Technological Change Data
Ecdat::TranspEq Statewide Data on Transportation Equipment
Manufacturing
....
Those files are in Ecdat packages.
Caschool
Error: object 'Caschool' not found
MCAS
Error: object 'MCAS' not found
Because loading the package does not necessarily register the datasets:
> require(Ecdat)
Loading required package: Ecdat
> data() #------> produces a large list including
Car Stated Preferences for Car Choice
Caschool The California Test Score Data Set
Catsup Choice of Brand for Catsup
Cigar Cigarette Consumption
> str(Caschool)
Error in str(Caschool) : object 'Caschool' not found
> data(Car)
> str(Car)
'data.frame': 4654 obs. of 70 variables:
$ choice : Factor w/ 6 levels "choice1","choice2",..: 1 2 5 5 5 5
2 5 5 2 ...
$ college : num 0 1 0 0 0 0 1 1 0 1 ...
$ hsg2 : num 0 1 1 0 1 0 1 0 0 0 ...
Note that this dataset was NEVER spelled "car".
--
David.
________________________________
From: Stefan Grosse <singularit...@gmx.net>
Sent: Sun, November 28, 2010 7:23:19 PM
Subject: Re: [R] How to remove a package.
Am 27.11.2010 09:48, schrieb Stephen Liu:
I found the datasets of AER
cool.
detach("package:AER", unload = TRUE)
detach(package:AER) works for me.
data()
still found "car" there.
you mean "cars" ? This is not part of AER but in a base R
installation.
install.packages("EcDat")
Where can I download/install EcDat? TIA
It is case sensitive, try install.packages("Ecdat") it works for me...
Maybe you should try a little bit more...
hth
Stefan
[[alternative HTML version deleted]]
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