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Replacing NAs with latest non-NA value
...ry(zoo)
az <- zoo(1:6)
bz <- zoo(c(2,NA,1,4,5,2))
na.locf(bz)
1 2 3 4 5 6
2 2 1 4 5 2
na.locf(bz, fromLast = TRUE)
1 2 3 4 5 6
2 1 1 4 5 2
cz <- zoo(c(NA,9,3,2,3,2))
na.locf(cz)
2 3 4 5 6
9 3 2 3 2
shar...
Remove duplicated rows
...only need the first three columns
deduped.data <- unique( yourdata[ , 1:3 ] )
# the fourth column no longer 'distinguishes' them,
# so they're duplicates and thrown out.
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Python (and Python C API): __new__ versus __init__
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139
The difference mainly arises with mutable vs immutable types.
__new__ accepts a type as the fi...
REST, HTTP DELETE and parameters
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edited May 23 '17 at 11:47
Community♦
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answered Mar 29 '10 at 20:59
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What is a “context bound” in Scala?
... Robert HarveyRobert Harvey
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Check if instance is of a type
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39
if(c is TFrom)
{
// Do Stuff
}
or if you plan on using c as a TForm, use the following exa...
How to REALLY show logs of renamed files with git?
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73
I think that the general drive behind Linus point is that - and take this with a pinch of salt -...
Only read selected columns
... header = TRUE)
Year Jan Feb Mar Apr May Jun
1 2009 -41 -27 -25 -31 -31 -39
2 2010 -41 -27 -25 -31 -31 -39
3 2011 -21 -27 -2 -6 -10 -32
Change "integer" to one of the accepted types as detailed in ?read.table depending on the real type of data.
data.txt looks like this:
$ cat data.tx...
CSS content property: is it possible to insert HTML instead of Text?
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edited Mar 23 '15 at 11:33
answered Dec 22 '10 at 0:10
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What's invokedynamic and how do I use it?
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answered Jul 10 '11 at 2:23
Ernest Friedman-HillErnest Friedman-Hill
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