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regarding QRb() function

3 messages · narendarreddy kalam, Uwe Ligges, Douglas Bates

#
Error in `[.data.frame`(x, order(x, na.last = na.last, decreasing =
decreasing)) :    undefined columns selected during the execution of
following r sequence of commands
X<-subset(data,select=c(V1,V2,V3,V4,V5,V6,V7,V8,V9))
y<-subset(data,selcet=10)
Data = list(y=y, X=X, p=.75)
Prior = list(betabar=c(rep(0,ncol(X))),A=.01*diag(ncol(X)))
Mcmc = list(R=100000, keep=10, step=.2)
out <- QRb(Data=Data, Prior=Prior, Mcmc=Mcmc)

here data is of 60 records and 10 attributes. V1,...V9 are input values and
V10 is response variable.

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2 days later
#
On 26.12.2011 15:30, narendarreddy kalam wrote:
1. We do not have the object "data".
2.

 > QRb
Error: object 'QRb' not found

Please read the very last sentence of each R-help message.

Uwe Ligges
#
2011/12/28 Uwe Ligges <ligges at statistik.tu-dortmund.de>:
and also spell "select" correctly in

 y <- subset(data,select=10)

or, more simply, specify

X <- data[, -10]
y <- data[, 10]

It is not clear if the function you are using requires X to be a
matrix, like a model matrix, or a data frame.  If it expects a matrix
use

X <- data.matrix(data[, -10])