similar to: dnorm and qnorm

Displaying 20 results from an estimated 1100 matches similar to: "dnorm and qnorm"

2011 Aug 15
2
plotting segments only and in color
Hello, I've a question concerning the display of interval data. A sample dataset where X is an interval between Xa and Xb which should be displayed: Y=c(15,14,23,18,19,9,19,13) Xa=c(17,22,21,18,19,25,8,19) Xb=c(22,22,29,34,19,26,17,22) X = (Xa+Xb)/2 It's easily possible to plot the mean of the interval like: plot(X,Y) afterwards I can create lines for the interval with:
2009 Dec 08
4
lower.tail option in pnorm
Hi, I would have thought that these two constructions would produce the same result but they do not. Resp <- rbinom(10, 1, 0.5) Stim <- rep(0:1, 5) mm <- model.matrix(~ Stim) Xb <- mm %*% c(0, 1) ifelse(Resp, log(pnorm(Xb)), log(1 - pnorm(Xb))) pnorm(as.vector(Xb), lower.tail = Resp, log.p = TRUE) > ifelse(Resp, log(pnorm(Xb)), log(1 - pnorm(Xb))) [1] -0.6931472 -1.8410216
2004 Jan 18
7
arp problem in /var/log/messages
hi all, i got flooded by these msgs like 1000+ lines, any idea? my kernel is dated Nov-30 FreeBSD 4.9-stable # tail -f /var/log/messages Jan 18 19:43:23 xb /kernel: arp: 202.79.180.1 moved from 00:04:5a:49:eb:74 to 00:50:0f:4f:c0:00 on rl0 Jan 18 19:45:06 xb /kernel: arp: 202.79.180.1 moved from 00:50:0f:4f:c0:00 to 00:04:5a:49:eb:74 on rl0 Jan 18 19:45:18 xb /kernel: arp: 202.79.180.1 moved from
2004 Mar 10
3
converting lists got by tapply to dataframes
I have two lists: xa <- list( X=c(1,2,3), Y=c(4,5,6), Z=c(7,8,9) ) xb <- with( barley, tapply( X=seq(1:nrow(barley)), INDEX=site , FUN=function(z)yield[z])) I can convert xa to a dataframe easily with: as.data.frame(xa) But if i try the same with xb I get: as.data.frame(xb) Error in as.data.frame.default(xb) : can't coerce array into a data.frame What
2012 Jul 10
3
fill 0-row data.frame with 1 line of NAs
Dear all Is there a simpler method to achieve the following: When I obtain an empty data.frame after subsetting, I need for it to contain one line of NAs. Here's a dummy example: > (.xb <- iris[ iris$Species=='zz', ]) [1] Sepal.Length Sepal.Width Petal.Length Petal.Width Species <0 rows> (or 0-length row.names) > dim(.xb) [1] 0 5 > (.xa <-
2017 Dec 21
7
[PATCH v20 3/7 RESEND] xbitmap: add more operations
This patch adds support to find next 1 or 0 bit in a xbmitmap range and clear a range of bits. More possible optimizations to add in the future: 1) xb_set_bit_range: set a range of bits. 2) when searching a bit, if the bit is not found in the slot, move on to the next slot directly. 3) add tags to help searching. Signed-off-by: Wei Wang <wei.w.wang at intel.com> Cc: Matthew Wilcox
2017 Dec 21
7
[PATCH v20 3/7 RESEND] xbitmap: add more operations
This patch adds support to find next 1 or 0 bit in a xbmitmap range and clear a range of bits. More possible optimizations to add in the future: 1) xb_set_bit_range: set a range of bits. 2) when searching a bit, if the bit is not found in the slot, move on to the next slot directly. 3) add tags to help searching. Signed-off-by: Wei Wang <wei.w.wang at intel.com> Cc: Matthew Wilcox
2017 Dec 20
2
[PATCH v20 0/7] Virtio-balloon Enhancement
On Wednesday, December 20, 2017 8:26 PM, Matthew Wilcox wrote: > On Wed, Dec 20, 2017 at 06:34:36PM +0800, Wei Wang wrote: > > On 12/19/2017 10:05 PM, Tetsuo Handa wrote: > > > I think xb_find_set() has a bug in !node path. > > > > I think we can probably remove the "!node" path for now. It would be > > good to get the fundamental part in first, and
2017 Dec 20
2
[PATCH v20 0/7] Virtio-balloon Enhancement
On Wednesday, December 20, 2017 8:26 PM, Matthew Wilcox wrote: > On Wed, Dec 20, 2017 at 06:34:36PM +0800, Wei Wang wrote: > > On 12/19/2017 10:05 PM, Tetsuo Handa wrote: > > > I think xb_find_set() has a bug in !node path. > > > > I think we can probably remove the "!node" path for now. It would be > > good to get the fundamental part in first, and
2012 Feb 09
1
Constraint on one of parameters.
Dear all, I have a function to optimize for a set of parameters and want to set a constraint on only one parameter. Here is my function. What I want to do is estimate the parameters of a bivariate normal distribution where the correlation has to be between -1 and 1. Would you please advise how to revise it? ex=function(s,prob,theta1,theta,xa,xb,xc,xd,t,delta) { expo1=
2017 Dec 12
21
[PATCH v19 0/7] Virtio-balloon Enhancement
This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live
2017 Dec 12
21
[PATCH v19 0/7] Virtio-balloon Enhancement
This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live
2011 Nov 22
5
x, y for point of intersection
Hi everyone, ? I am trying to get a point of intersection between a polyline and a straight line ?.. and get the x and y coordinates of this point. For exemplification consider this: ? ? set.seed(123) ? k1 <-rnorm(100, mean=1.77, sd=3.33) ?k1 <- sort(k1) q1 <- rnorm(100, mean=2.37, sd=0.74) q1 <- sort(q1, decreasing = TRUE) plot(k1, q1, xlim <- c((min(k1)-5),
2004 Mar 28
2
splitting a character vector
Dear R People: Suppose I have the following; xa <- c("There are 5 dogs") I would like to have a new character vector such that xb[1] is There xb[2] is are xb[3] is 5 xb[4] is dogs Since the original vector has length 1, substring will not work. Any suggestions would be MOST welcome! thanks Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences
2017 Nov 29
22
[PATCH v18 00/10] Virtio-balloon Enhancement
This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live
2017 Nov 29
22
[PATCH v18 00/10] Virtio-balloon Enhancement
This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live
2010 Jul 29
1
[PATCH] Reflow logic to make it easier to follow
The control flow was: if (!y) { ppix = ... } if (y) { ... } else if (x) { use ppix for something } else { use ppix for something } Merge the if(!y) block with the two else branches. This avoids a false-positive in the clang static analyzer, it can't know that !y and x are mutually exclusive. The result looks something like this: if (y) { ... } else { ppix = ... if (x) {
2011 Jul 07
3
AR vs ARIMA question
Dear R People: Here is some output from AR and ARIMA functions: > xb <- arima.sim(n=120,model=list(ar=0.85)) > xb.ar <- ar(xb) > xb.ar Call: ar(x = xb) Coefficients: 1 0.6642 Order selected 1 sigma^2 estimated as 1.094 > xb.arima <- arima(xb,order=c(1,0,0),include.mean=FALSE) > xb.arima Call: arima(x = xb, order = c(1, 0, 0), include.mean = FALSE)
2017 Aug 09
1
[PATCH v13 1/5] Introduce xbitmap
On Thu, 3 Aug 2017 14:38:15 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Matthew Wilcox <mawilcox at microsoft.com> > > The eXtensible Bitmap is a sparse bitmap representation which is > efficient for set bits which tend to cluster. It supports up to > 'unsigned long' worth of bits, and this commit adds the bare bones -- > xb_set_bit(),
2017 Aug 09
1
[PATCH v13 1/5] Introduce xbitmap
On Thu, 3 Aug 2017 14:38:15 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Matthew Wilcox <mawilcox at microsoft.com> > > The eXtensible Bitmap is a sparse bitmap representation which is > efficient for set bits which tend to cluster. It supports up to > 'unsigned long' worth of bits, and this commit adds the bare bones -- > xb_set_bit(),