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<<insert bug report here>>
Reproduced on Debian and Windows ...
On 2.4.x if you execute
set.seed(12345)
t.1 <- rt(n = 1000, df = 20)
set.seed(12345)
t.2 <- rt(n = 1000, df = 20, ncp = 0)
all.equal(t.1, t.2) ## Not close to true
This appears to be due to the fact that in 2.4.x rt is now
rt
function (n, df, ncp = 0)
{
if (missing(ncp))
.Internal(rt(n, df))
else rnorm(n, ncp)/sqrt(rchisq(n, df)/df)
}
<environment: namespace:stats>
Whereas in 2.3.1 rt() is verified to work as expected when someone
(redundantly) types ncp = 0
rt
function (n, df, ncp = 0)
{
if (ncp == 0)
.Internal(rt(n, df))
else rnorm(n, ncp)/(rchisq(n, df)/sqrt(df))
}
<environment: namespace:stats>
The only interface difference is missing(ncp) vs. ncp == 0 .
- --please do not edit the information below--
Version:
platform = i486-pc-linux-gnu
arch = i486
os = linux-gnu
system = i486, linux-gnu
status =
major = 2
minor = 4.1
year = 2006
month = 12
day = 18
svn rev = 40228
language = R
version.string = R version 2.4.1 (2006-12-18)
Locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=en_US.UTF-8
Search Path:
.GlobalEnv, package:car, package:rkward, package:stats,
package:graphics, package:grDevices, package:utils, package:datasets,
package:methods, Autoloads, package:base
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