Displaying 5 results from an estimated 5 matches for "ff_vector".
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pf_vector
2012 Oct 02
1
ffsave problems
...list()
.. .. ..- attr(*, "Length")= int 65640757
.. .. ..- attr(*, "Symmetric")= logi FALSE
.. .. ..- attr(*, "ramclass")= chr "Date"
.. .. ..- attr(*, "class")= chr "virtual"
.. .. - attr(*, "class") = chr [1:2] "ff_vector" "ff"
.. $ juliano : list()
.. ..- attr(*, "physical")=Class 'ff_pointer' <externalptr>
.. .. ..- attr(*, "vmode")= chr "short"
.. .. ..- attr(*, "maxlength")= int 65640757
.. .. ..- attr(*, "pattern")= chr &qu...
2012 May 03
1
* operator overloading & setOldClass
...s,
I am trying to overload some operators in order to let these work with the
ff package by registering the S3 objects from the ff package and
overloading the operators as shown below in a reproducible example where
the "*" operator is overloaded.
require(ff)
setOldClass(Classes=c("ff_vector"))
setMethod(
f="*",
signature = signature(e1 = c("ff_vector"), e2 = c("ff_vector")),
definition = function (e1, e2){
e1[] * e2[]
}
)
ff(1:10) * ff(1:10)
It looks like the ff(1:10) * ff(1:10) is not recognising the fact that both
objects are o...
2012 Aug 29
1
spatial correlation in lme and huge correlation matrix (memory limit)
...P3 class and a big.matrix object is a SP4
class, so lme return to incompatible class.
Then I've tried the ff function, but it returns to this message:
Erreur dans UseMethod("Initialize") :
pas de m?thode pour 'Initialize' applicable pour un objet de classe
"c('ff_vector', 'ff')"
At this point, I'm out of idea. Is somebody knows how to deal with
spatial correlation in a mixed-effect model and a huge correlation
matrix at the same time?
Thanks,
Sabrina
2012 Oct 01
3
ffbase, help with %in%
Hello to everyone.
I'm trying to use the %in% to match to vectors in ff format.
a<-as.ff(data[,1]) %in% fire$fecha
> aff (open) logical length=3653 (3653)
[1] [2] [3] [4] [5] [6] [7] [8] [3646]
FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE : FALSE
[3647] [3648] [3649] [3650] [3651] [3652] [3653]
FALSE FALSE FALSE FALSE FALSE FALSE
2010 Jan 07
1
A question about the ff package
...', length=N, update=FALSE)
for (i in chunk(bigData, from=1, to=N, by=1e5))
select[i] <- ifelse(bigData[i,]$C.2 > 0.5, TRUE, FALSE)
bd <- bigData[select,]
Error in UseMethod("as.hi") :
no applicable method for 'as.hi' applied to an object of class
"c('ff_vector', 'ff')"
I tried something like the example in ?as.hi but I can not convert the
select vector into a RAM object and then use as.hi() b/c I do not have
enough RAM. What are my options for subseting this ffdf object by the
values of one of its columns?
More generally, is there a c...