Displaying 1 result from an estimated 1 matches for "weekday_strata1".
2011 Feb 17
0
Data frame sampling
...en coverage of all 40 unique spatiotemporal strata in
my final data frame.
Thank you,
Mike
### The following code extracts two rows per week randomly without replacement and ensures that no two
### DOW are duplicated per week, but fails to incorporate even coverage of strata.
set.seed(3000)
WEEKDAY_STRATA1 <- do.call("rbind", lapply(split(WEEKDAY_STRATA, WEEKDAY_STRATA$WEEK), function(x) x[sample(nrow(x), 10, replace=FALSE),]))
l <- do.call("rbind", lapply(split(WEEKDAY_STRATA1,WEEKDAY_STRATA1$WEEK),function(y)!duplicated(y[,1])))
M <- as.matrix(l,byrow = FALSE)
WEEKDAY_...