Displaying 2 results from an estimated 2 matches for "yoooooooooooooooooo".
2007 Oct 16
1
underdetermined system
...hen say i have:
> w <- matrix(c(1, 5), ncol=2)
> sw = 2
> qrW = qr(t(w) %*% w)
> qr.coef(qrW, t(w) %*% sw)
[,1]
[1,] 2
[2,] NA
but we also have soln (0, 2/5) which obviously has a smaller distance in L2
than (2, 0). Am I missing something very obvious? Thanks a lot!!!!
- yoooooooooooooooooo
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2007 Aug 31
2
plotting
...1 2 10 12
This doesn't seem reasonable but let's say I want to plot intraday graph
with axis.POSIXct, my data is only from 8:30 to 4 every day and I have these
data for days.. i don't want to see a straight line every night.. Is there a
way I can do this?
Thanks!!!
-yoooooooooooooooooo
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