Hello all,
The R code below tests if values of the variable �t� are included or not within
intervals that are defined from the data frame dat. The expected results are
displayed using the function "rle" (see code below). Here is the code:
ta <- 100
tb <- 140
tc <- 40
td <- 85
datF <- data.frame(t = 1:3650, e = NA)
dat <- data.frame(a = seq(1, 3650, 365),
b = seq(ta, 3650, 365),
c = seq(ta + 1, 3650, 365),
d = seq(ta + tb, 3650, 365),
e = seq(ta + tb +1, 3650, 365),
f = seq(ta + tb + tc, 3650, 365),
g = seq(ta + tb + tc + 1, 3650, 365),
h = seq(ta + tb + tc + td, 3650, 365))
datF$e <- ifelse((datF$t %in% unlist(Map(`:`, dat$a, dat$b))), 1,
ifelse((datF$t %in% unlist(Map(`:`, dat$e, dat$f))), -1, 0))
## Validation
y <- rle(datF$e)
y$lengths[y$values==1]
y$lengths[y$values==0]
y$lengths[y$values==-1]
The code works but I would like to obtain the same results without using data
frames and the function �Map�. Here is an example:
a <- 100
b <- 140
c <- 40
d <- 85
y1 <- a + b + c + d
t1 <- seq(1, y1*10, 1)
t2 <- t1/y1 - floor(t1/y1)
p1 <- a/y1
p2 <- p1 + a/y1
p3 <- p2 + b/y1
p4 <- p3 + c/y1
test <- 1*(t2 <= p1)- 1*(t2 > p2)*(t2 <= p3)
## Validation
y <- rle(test)
y$lengths[y$values==1]
y$lengths[y$values==0]
y$lengths[y$values==-1]
Using this code, the results are not correct.
Any help would be greatly appreciated.
Many thanks
Marine
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