Displaying 20 results from an estimated 3000 matches similar to: "boot package question: sampling on factor, not row"
2007 Dec 08
0
help for segmented package
Hi,
I am trying to find m breakpoints of a linear regression model. I
used the segmented package. It works fine for small number of
predicators and breakpoints.(3 r.v. 3 points). However, my model has
14 variables it even would not work even for just one breakpoints!.
The error message is always estimated breakpoints are out of range.
Since my problem is time related problem. So I
2006 Dec 08
1
X using ATI ES1000: Failed to create write
I verified with my vendor that indeed we are using an ATI ES1000 Video
Card, not an Nvidia as previously thought.
I am getting the following error -any suggestions?
[38] -1 0 0x0000b400 - 0x0000b403 (0x4) IX[B]
[39] -1 0 0x0000b480 - 0x0000b487 (0x8) IX[B]
[40] -1 0 0x0000b800 - 0x0000b803 (0x4) IX[B]
[41] -1 0 0x0000b880 - 0x0000b887
1999 Oct 08
1
floor(NaN) problem fixed in massdist.c (PR#291)
Full_Name: Naoki Takebayashi
Version: 0.65.0+R-release.diff (Oct 6, 1999)
OS: Linux/Alpha
Submission from: (NULL) (129.79.224.171)
This will fix the "problem 2 (crash in fft)" in Bug ID #277
On Linux/Alpha, make check failed because R could not handle the following
example in base-Ex.R
##___ Examples ___:
# The Old Faithful geyser data
data(faithful)
:
:
## Missing values:
x <-
2023 Nov 14
1
data.frame weirdness
What is going on here? In the lines ending in #### the inputs and outputs
are identical yet one gives a warning and the other does not.
a1 <- `rownames<-`(anscombe[1:3, ], NULL)
a2 <- anscombe[1:3, ]
ix <- 5:8
# input arguments to #### are identical in both cases
identical(stack(a1[ix]), stack(a2[ix]))
## [1] TRUE
identical(a1[-ix], a2[-ix])
## [1] TRUE
res1 <-
2023 Nov 14
1
data.frame weirdness
They differ in whether the row names are "automatic":
> .row_names_info(a1)
[1] -3
> .row_names_info(a2)
[1] 3
Best,
-Deepayan
On Tue, 14 Nov 2023 at 08:23, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
>
> What is going on here? In the lines ending in #### the inputs and outputs
> are identical yet one gives a warning and the other does not.
>
>
2023 Nov 14
1
data.frame weirdness
In that case identical should be FALSE but it is TRUE
identical(a1, a2)
## [1] TRUE
On Tue, Nov 14, 2023 at 8:58?AM Deepayan Sarkar
<deepayan.sarkar at gmail.com> wrote:
>
> They differ in whether the row names are "automatic":
>
> > .row_names_info(a1)
> [1] -3
> > .row_names_info(a2)
> [1] 3
>
> Best,
> -Deepayan
>
> On Tue, 14 Nov
2023 Nov 14
1
data.frame weirdness
Also why should that difference result in different behavior?
On Tue, Nov 14, 2023 at 9:38?AM Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
>
> In that case identical should be FALSE but it is TRUE
>
> identical(a1, a2)
> ## [1] TRUE
>
>
> On Tue, Nov 14, 2023 at 8:58?AM Deepayan Sarkar
> <deepayan.sarkar at gmail.com> wrote:
> >
> >
2023 Nov 14
1
data.frame weirdness
On Tue, 14 Nov 2023 at 09:41, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
>
> Also why should that difference result in different behavior?
That's justifiable, I think; consider:
> d1 = data.frame(a = 1:4)
> d2 = d3 = data.frame(b = 1:2)
> row.names(d3) = c("a", "b")
> data.frame(d1, d2)
a b
1 1 1
2 2 2
3 3 1
4 4 2
> data.frame(d1,
2017 Oct 13
2
How to define proper breaks in RFM analysis
Hey,
i want to define 3 ideal breaks (bin) for each variable one of those
variables is attached in the previous email,
i don't want to consider quartile method because quartile is not working
ideally for that data set because data distribution is non normal.
so i want you to suggest another method so that i can define 3 breaks with
the ideal interval for Recency, frequency and monetary to
2006 May 14
1
Dragable element
Hey all
Im having a problem... Ok, this is the situation...
I have a small product image, on which ive floated a div over it, and
defined it as draggable. Now, this works, and i can drag it around no
problem. great. but then, what i want to do is, based on the location of
that dragable element from the top and the left, to move (using the
Effect.MoveBy method) a larger image - so effective
2012 May 01
3
Data frame vs matrix quirk: Hinky error message?
AdvisoRs:
Is the following a bug, feature, hinky error message, or dumb Bert?
> mtest <- matrix(1:12,nr=4)
> dftest <- data.frame(mtest)
> ix <- cbind(1:2,2:3)
> mtest[ix] <- NA
> mtest
[,1] [,2] [,3]
[1,] 1 NA 9
[2,] 2 6 NA
[3,] 3 7 11
[4,] 4 8 12
## But ...
> dftest[ix] <- NA
Error in `[<-.data.frame`(`*tmp*`, ix, value
2007 Nov 02
2
where samba store user's passwords ?
I have got tdbsam as backend in smb.conf
passdb backend = tdbsam
When user change password from windows XP file passdb.tdb schould change
date because was updated, but I have still the same date IX 18 10:30.
[root@serwer private]# ls -al
razem 76
drwx------ 2 root root 4096 IX 11 20:25 .
drwxr-xr-x 7 root root 4096 XI 2 15:14 ..
-rw------- 1 root root 36864 IX 25 07:57 passdb.tdb
-rw-------
2016 Aug 25
1
sort.int(c(2, NA, 4), index.return=TRUE, na.last=NA, method)$ix differ for method="radix" and "shell"/"quick" (+ new default in R-devel)
Does sort.int(c(2,NA,4), index.return=TRUE, na.last=NA,
method="radix")$ix give the intended result, because I get:
> sort.int(c(2,NA,4), index.return=TRUE, na.last=NA, method="radix")
$x
[1] 2 4
$ix
[1] 1 3
With method="shell" and method="quick" in R devel, I get:
> sort.int(c(2,NA,4), index.return=TRUE, na.last=NA, method="shell")
$x
2012 Oct 20
2
Help with programming a tricky algorithm
Hi All,
I'm a little stumped by the following problem. I've got a dataset with
the following structure:
idxy ix iy country (other variables)
1 1 1 c1 x1
2 1 2 c1 x2
3 1 3 c1 x3
. . . . .
3739 55 67 c7 x3739
3740 55 68 c7 x3740
where ix and
2012 Feb 17
3
Regain play analysis patches
Earl Chew wrote:
> I'm a little reluctant to introduce another compiled program when there are
> so many other options that will work well enough out of the box.
>
> Here are two ideas:
>
> 1. Use bc(1) to compute the raw samples
> 2. Use perl(1) to compute the raw samples
>
> To generate raw unsigned samples using bc(1) for example:
>
> samplerate = 1000;
2006 Oct 06
1
Sum of Bernoullis with varying probabilities
Hi Folks,
Given a series of n independent Bernoulli trials with
outcomes Yi (i=1...n) and Prob[Yi = 1] = Pi, I want
P = Prob[sum(Yi) = r] (r = 0,1,...,n)
I can certainly find a way to do it:
Let p be the vector c(P1,P2,...,Pn).
The cases r=0 and r=n are trivial (and also are exceptions
for the following routine).
For a given value of r in (1:(n-1)),
library(combinat)
Set <- (1:n)
2019 Mar 08
2
IR liveness analysis in 2019
Hi,
I may have a use-case for IR liveness analysis, although it's in the
context of debuginfo. Using the sample code from this bug report [0],
which is a fairly trivial loop:
int foo(int count) {
int result = 0;
for (unsigned long long ix = start; ix != count; ++ix)
result += external(ix);
return result;
}
On x86_64 the 32-bit "count" comparison
2007 May 29
2
summing up colum values for unique IDs when multiple ID's exist in data frame
I have data.frame's with IDs and multiple columns. B/c some of IDs showed up
more than once, I need sum up colum values to creat a new dataframe with
unique ids.
I hope there are some cheaper ways of doing it... Because the dataframe is
huge, it takes almost an hour to do the task. Thanks so much in advance!
Young
# ------------------------- examples are here and sum.dup.r is at the
2018 Mar 30
0
getting all circular arrangements without accounting for order
New function below is a bit faster due to more efficent memory handling.
for-loop FTW!
directionless_circular_permutations2 <- function( n ) {
n1 <- n - 1L
v <- seq.int( n1 )
ix <- combinations( n1, 2L )
jx <- permutations( n-3L, n-3L )
jxrows <- nrow( jx )
jxoffsets <- seq.int( jxrows )
result <- matrix( n, nrow = factorial( n1 )/2L, ncol = n )
k
2004 Jul 06
1
vectorizing sapply() code (Modified by Aaron J. Mackey)
[ Not sure why, but the first time I sent this it never seemed to go
through; apologies if you're seeing this twice ... ]
I have some fully functional code that I'm guessing can be done
better/quicker with some savvy R vector tricks; any help to make this
run a bit faster would be greatly appreciated; I'm particularly stuck
on how to calculate using "row-wise" vectors