Dear all,
I am trying to run a loop in my codes, but the software returns an error:
"subscript out of bounds"
I dont understand exactly why this is happenning. My codes are the following:
rm(list=ls()) #remove almost everything in the memory
set.seed(180185)
nsim <- 10
mresultx <- matrix(-99, nrow=1000, ncol=nsim)
mresultb <- matrix(-99, nrow=1000, ncol=nsim)
N <- 200
I <- 5
taus <- c(0.480:0.520)
h <- c(1:20/1000)
codd <-
c(1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81)
ceven <-
c(2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82)
cevenl <- c(2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40)
#Create an object to hold results.
M <- matrix(0, ncol=82, nrow=nsim)
Mhb0 <- matrix(0, ncol=20, nrow=nsim)
Mhb1 <- matrix(0, ncol=20, nrow=nsim)
Mchb0 <- matrix(0, ncol=20, nrow=nsim)
Mchb1 <- matrix(0, ncol=20, nrow=nsim)
for (i in 1:nsim){
# make a matrix with 5 cols of N random uniform values
u <- replicate( 5, runif(N, 0, 1) )
# fit matrix u in another matrix of 1 column
mu <- matrix(u, nrow=1000, ncol=1)
# make auction-specific covariate
x <- runif(N, 0, 1)
mx <- matrix(rep(x,5), nrow=1000, ncol=1)
b0 <- matrix(rep(c(1),1000), nrow=1000, ncol=1)
#function for private cost
cost <- b0+b0*mx+mu
#bidding strategy
bid <- mx+((I+1)/I)+((I-1)/I)*mu
mresultb[,i] <- bid
mresultx[,i] <- mx
qf <- rq(formula = mresultb[,i] ~ mresultx[,i], tau= 480:520/1000)
# Storing result and does not overwrite prior values
M[i, ] <- coef(qf)
QI <- (1-0.5)/(I-1)
M50b0 <- M[,41]
M50b1 <- M[,42]
Mb0 <- matrix(M[,codd], nrow=nsim, ncol=20)
Mb1 <- matrix(M[,ceven], nrow=nsim, ncol=20)
for (t in cevenl){
Mhb0[ ,t] <- M[,(41+t)]-M[,(41-t)]
Mhb1[ ,t] <- M[,(42+t)]-M[,(42-t)]
}
}
Problem: the problem is in the red part of the loop. I want that the software
takes the column (41+t) from the matrix called M and subtract from it the
cloumn (41-t) of the same matrix M, such that the value of t varies according
to the vector cevenl above.
Why is this looping not working?
Thanks in advance!!!
Julia
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