Displaying 1 result from an estimated 1 matches for "mygridcollapsed".
2012 Feb 02
4
The "less than" (<) operator doesnt seem to perform as expected
...example here puzzles me. It seems like the < operator doesn't work as expected.
> l <- 0.6
> u <- seq(0.4, 0.7, 0.1)
> u
[1] 0.4 0.5 0.6 0.7
> mygrid <- expand.grid("l" = l, "u" = u)
> mygrid
l u
1 0.6 0.4
2 0.6 0.5
3 0.6 0.6
4 0.6 0.7
> mygridcollapsed <- mygrid[mygrid$l < mygrid$u, ]
> mygridcollapsed
l u
3 0.6 0.6
4 0.6 0.7
In this little example I expect 'mygridcollapsed' only to return row 4 and for it to return row 3 seems wrong. The strange thing is it seems to work if I start the u-sequence at 0.5.
> l <- 0.6...