Hi,
I am trying to covert a Winbugs code into R code. Here is the winbugs code
model{# models likelihoodfor (i in 1:n){time[i] ~ dnorm( mu[i], tau ) #
stochastic componenent# link and linear predictormu[i] <- beta0 + beta1 *
cases[i] + beta2 * distance[i]}# prior distributionstau ~ dgamma( 0.01, 0.01
)beta0 ~ dnorm( 0.0, 1.0E-4)beta1 ~ dnorm( 0.0, 1.0E-4)beta2 ~ dnorm( 0.0,
1.0E-4)# definition of sigmas2<-1/taus <-sqrt(s2)# calculation of the sample
variancefor (i in 1:n){ c.time[i]<-time[i]-mean(time[]) }sy2 <- inprod(
c.time[], c.time[] )/(n-1)# calculation of Bayesian version R squaredR2B <- 1 -
s2/sy2# Expected y for a typical delivery timetypical.y <- beta0 + beta1 *
mean(cases[]) + beta2 * mean(distance[])}INITSlist( tau=1, beta0=1, beta1=0,
beta2=0 )DATA (LIST)list( n=25,time = c(16.68, 11.5, 12.03, 14.88, 13.75,
18.11, 8, 17.83,79.24, 21.5, 40.33, 21, 13.5, 19.75, 24, 29, 15.35,19, 9.5,
35.1, 17.9, 52.32, 18.75, 19.83, 10.75),distance = c(560, 220, 340, 80, 150,
330, 110, 210, 1460,605, 688, 215, 255, 462, 448, 776, 200, 132,36, 770, 140,
810, 450, 635, 150),cases = c( 7, 3, 3, 4, 6, 7, 2, 7, 30, 5, 16, 10, 4, 6,
9,10, 6, 7, 3, 17, 10, 26, 9, 8, 4) )
I want to do this in R. So, I copied the model and pasted into a txt file named
reg. Here is the R code I used
time <-
c(16.68,11.5,12.03,14.88,13.75,18.11,8,17.83,79.24,21.5,40.33,21,13.5,19.75,24,29,15.35,19,9.5,35.1,17.9,52.32,18.75,19.83,10.75)cases
<- c(7,3,3,4,6,7,2,7,30,5,16,10,4,6,9,10,6,7,3,17,10,26,9,8,4)distance <-
c(560,220,340,80,150,330,110,210,1260,605,688,215,255,462,448,776,200,132,36,770,140,810,450,635,150)
data <- list("time","cases","distance")
inits <- function(){list(tau=1,beta1=0,beta2=0,beta3=0)}
sim <- bugs(data, inits, model.file =
"C:/Users/Gunal/Desktop/dummy/reg.txt",parameters = c("beta1",
"beta2","beta3"),n.chains = 3, n.iter = 1000,bugs.directory =
"D:/PROGRAMLAR/WinBUGS14/",debug=TRUE)
Winbugs is producing this error page
display(log)check(C:/Users/Gunal/Desktop/dummy/reg.txt)model is syntactically
correctdata(C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/data.txt)data
loadedcompile(3)variable n is not
definedinits(1,C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/inits1.txt)command
#Bugs:inits cannot be executed (is greyed
out)inits(2,C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/inits2.txt)command
#Bugs:inits cannot be executed (is greyed
out)inits(3,C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/inits3.txt)command
#Bugs:inits cannot be executed (is greyed out)gen.inits()command
#Bugs:gen.inits cannot be executed (is greyed
out)thin.updater(1)update(500)command #Bugs:update cannot be executed (is
greyed out)set(beta1)command #Bugs:set cannot be executed (is greyed
out)set(beta2)command #Bugs:set cannot be executed (is greyed
out)set(beta3)command #Bugs:set cannot be executed (is greyed
out)set(deviance)command #Bugs:set cannot be executed (is greyed
out)dic.set()command #Bugs:dic.set cannot be executed (is greyed
out)update(500)command #Bugs:update cannot be executed (is greyed
out)coda(*,C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/coda)command #Bugs:coda
cannot be executed (is greyed out)stats(*)command #Bugs:stats cannot be
executed (is greyed out)dic.stats()
DIChistory(*,C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/history.odc)command
#Bugs:history cannot be executed (is greyed
out)save(C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/log.odc)save(C:/Users/Gunal/AppData/Local/Temp/RtmpCYxtDZ/log.txt)
Any help would be greatly appreciated.
Cheers
Gunal
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