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namemax
2011 Mar 22
1
help need on working in subset within a dataframe
...0,0,1,1, 1,1,1,1,1, 1, 1,1, 1,0, 1,1,0,1,0)
x4 <- c(1,1,1,1,0, 0,1,1, 0,0, 0, 1,0,0, 0, 0,0,1, 1,1)
# I have more X variables potentially >1000 but I need to work four at a
time
dataframe <- data.frame(ped, fd, iid, mid, fid, y, x1, x2, x3, x4)
myfun <- function(dataframe) {
namemat <- matrix(c(1:4), nrow = 1)
smyfun <- function(x) {
x <- as.vector(x)
K1 <- dataframe$x1 * 0.23
K2 <- dataframe$x2 * 0.98
# just example there is long vector calculations in read dataset
kt1 <- K1 * K2
kt2 <- K1 / K2
Qni <- (K1*(kt1-0.25)+ K2 *(kt2-0.25))
y <- d...