I do not know if I have a problem or not.
The R script at the end of this email seems to
run properly and a I get a boxplot that looks
proper but I get the long string of messages
during execution of the script looking like:
...
The following object(s) are masked from dat ( position 8 ) :
sugar
The following object(s) are masked from dat ( position 9 ) :
sugar
The following object(s) are masked from dat ( position 10 ) :
sugar
...
I have absolutely no idea what they mean.
An interprestion or suggestion would be greatly
appreciated.
Running on Kubuntu using
R version 2.6.2 (2008-02-08)
PS: I'm obviously a newbie and this script is my first serious
attempt at using R.
R text follows: --------------------
source("dbi-start.R")
am_pm<-"PM Glucose for"
fc_year<-2008
bfc_head<-"select blood.sugar from blood where"
bfc_PM<-"blood.time>\"22:00:00\" and blood.time<=\"23:59:00\""
bfc_tail<-"order by blood.date,blood.time"
bfc<-"blood.date"
nmon<-c(2:12,1)
lst<-list() # init null list
for (i in 1:12) {
year<-fc_year
fc_date <- paste(bfc,">=\"", year, "-", i, "-01\" and ", sep="")
if (i == 12) year<-fc_year+1 else year<-fc_year
fc_date <- paste(fc_date,bfc,"<\"",year,"-",nmon[i],"-01\" and
",sep="")
fc_res<-dbSendQuery(gielog, paste(bfc_head,fc_date,bfc_PM,bfc_tail))
dat<-fetch(fc_res, n=-1)
attach(dat)
lst<-c(lst,list(sugar))
}
boxplot(lst,
main=paste(am_pm, fc_year),
mai=c(.5,.5,.5,.3),
axis=FALSE,
ylab="Glucose", xlab="Month")
axis(2,seq(40,200,by=10))
axis(4,seq(40,200,by=10))
axis(1,1:12)
--
The whole religious complexion of the modern world is due
to the absence from Jerusalem of a lunatic asylum.
-- Havelock Ellis (1859-1939) British psychologist
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