Displaying 3 results from an estimated 3 matches for "dow_num".
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2011 Mar 09
2
Complex sampling?
...til the
final selection is made. Here is an example of what I want to do, beginning at WEEK 1. I would prefer to do
this without using a loop, if possible.
sample frame: [3,4,5,6,7] --> [4,5,6] --> [4],[1,2,3,(4),5,6] --> [1,2,4,5,6] --> for each WEEK in dataframe
Randomly sample 2 DOW_NUM without replacement from each WEEK ( () = no two identical DOW_NUM can be sampled
in the same WEEK)
sample = {3,7}, {5,6}, {4,3}, {1,5}, --> for each WEEK in dataframe
Thanks you,
Mike
DATE DOW DOW_NUM WEEK
2 2011-05-02 Mon 3 1
3 2011-05-03 Tue 4 1
4 20...
2011 Feb 10
1
Conditional sampling
...1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L, 4L, 4L,
4L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L), .Label = c("5/3/2010",
"5/4/2010", "5/5/2010", "5/6/2010", "5/7/2010"), class = "factor"),
DOW_NUM = c(3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L,
4L, 4L, 4L, 4L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 6L, 6L, 6L,
6L, 6L, 6L, 6L, 6L, 7L, 7L, 7L, 7L, 7L, 7L, 7L, 7L), WEEK = c(1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1...
2011 Feb 17
0
Data frame sampling
...14746, 14746, 14746, 14746, 14747, 14747, 14747,
14747, 14747, 14747, 14747, 14747, 14748, 14748, 14748, 14748,
14748, 14748, 14748, 14748, 14749, 14749, 14749, 14749, 14749,
14749, 14749, 14749, 14750, 14750, 14750, 14750, 14750, 14750,
14750, 14750), class = "Date"), DOW_NUM = c(3, 3, 3, 3, 3,
3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3,
3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5,
5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 3,
3, 3, 3, 3, 3, 3, 3, 4, 4,...