Displaying 6 results from an estimated 6 matches for "nfact".
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fact
2007 Dec 19
1
strange timings in convolve(x,y,type="open")
Dear R-ophiles,
I've found something very odd when I apply convolve
to ever larger vectors. Here is an example below
with vectors ranging from 2^11 to 2^17. There is
a funny bump up at 2^12. Then it gets very slow at 2^16.
> for( i in 11:20 )print( system.time(convolve(1:2^i,1:2^i,type="o")))
user system elapsed
0.002 0.000 0.002
user system elapsed
0.373
2000 Mar 31
1
Cutting vectors
I have one factor with say five levels (fact) of different size and a corresponding variable (var). I randomly generate five new levels (nfact ex. 2,2,1,5,4). What I would like to do is to extract the corresponding variable values into a new variable (nvar). I did try the following, why doesn't it work? nvar<-var[fact==nfact[ ]]
Patrik Waldmann
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r-hel...
2002 Jun 12
4
table problems
dear helplist,
my student has fifty trees, numbered one to fifty, and a vector
recording which tree a certain possum slept in on 12 nights.
R> c
[1] 3 14 17 22 26 26 17 40 43 25 46 46
R>
Thus it slept in tree #3 on Monday, then tree #14 on Tues, and so on.
I wish to test the null hypothesis that the animal chooses trees
randomly; try
R> table(c)
c
3 14 17 22 25 26 40 43 46
1 1
2015 Oct 14
5
RFC: Introducing an LLVM Community Code of Conduct
On Wed, Oct 14, 2015 at 2:02 AM Bill Kelly via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Tanya Lattner wrote:
> >> On Oct 13, 2015, at 10:23 AM, Bill Kelly via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> >>
> >> Renato Golin via llvm-dev wrote:
> >>> On 13 October 2015 at 17:16, Kuperstein, Michael M via llvm-dev
>
2016 Nov 26
3
ifelse() woes ... can we agree on a ifelse2() ?
...or example, in chkIfelse(ifelseR) . Maybe place it inside try(...).
* If 'lt' is a "POSIXlt" object, (lt-100) is a "POSIXct" object.
So,
FUN(c(TRUE, FALSE, NA, TRUE), lt, lt-100)
is an example of mixed class.
* The part of function 'chkIfelse' in
for(i in seq_len(nFact))
uses 'NA.' function argument. That makes error when 'chkIfelse' is applied to function without fourth argument.
The part should be wrapped in
if(has.4th) .
* Function 'ifelseJH' has fourth argument, but the argument is not for value if NA. So, instead of
chkIfelse(ifelseJH...
2016 Nov 28
0
ifelse() woes ... can we agree on a ifelse2() ?
...;lt' is a "POSIXlt" object, (lt-100) is a "POSIXct" object.
> So,
> FUN(c(TRUE, FALSE, NA, TRUE), lt, lt-100)
> is an example of mixed class.
good; thank you for the hint.
> * The part of function 'chkIfelse' in
> for(i in seq_len(nFact))
> uses 'NA.' function argument. That makes error when 'chkIfelse' is applied to function without fourth argument.
> The part should be wrapped in
> if(has.4th) .
yes of course
> * Function 'ifelseJH' has fourth argument, but the argument is not...