similar to: Plot to a device and examine the plot?

On 15/10/2023 12:05 p.m., Shu Fai Cheung wrote: > Let me clarify my question: > > plot.new() > polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5)) > > If the device is an on-screen device, can I check whether a particular area > has anything drawn on it, or, to be precise, whether the color of a > particular area has all pixels equal to the background color. That is, if >

Hi You could also look at dev.capture(), depending on which screen device you are using. Paul On 16/10/23 05:24, Duncan Murdoch wrote: > On 15/10/2023 12:05 p.m., Shu Fai Cheung wrote: > > Let me clarify my question: > > > > plot.new() > > polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5)) > > > > If the device is an on-screen device, can I check

>>>>> Shu Fai Cheung >>>>> on Thu, 6 Jul 2023 17:14:27 +0800 writes: > Hi All, > I would like to ask two questions about printCoefmat(). Good... this function, originally named print.coefmat(), is 25 years old (in R) now: -------------------------------------------------------------------- r1902 | maechler | 1998-08-14 19:19:05 +0200 (Fri,

On 29/10/2023 3:48 a.m., Shu Fai Cheung wrote: > Hi all, > > Just a minor issue that I am not sure whether this is considered a > "bug." It is about the help page. > > In the help page of printCoefmat(), for the argument 'eps.Pvalue', the > description is as below: > > number, .. > > I have to read the source to figure out that this argument

Hi All, I would like to ask two questions about printCoefmat(). First, I found a behavior of printCoefmat() that looks strange to me, but I am not sure whether this is an intended behavior: ``` r set.seed(5689417) n <- 10000 x1 <- rnorm(n) x2 <- rnorm(n) y <- .5 * x1 + .6 * x2 + rnorm(n, -0.0002366, .2) dat <- data.frame(x1, x2, y) out <- lm(y ~ x1 + x2, dat) out_summary <-

Hi all, Just a minor issue that I am not sure whether this is considered a "bug." It is about the help page. In the help page of printCoefmat(), for the argument 'eps.Pvalue', the description is as below: number, .. I have to read the source to figure out that this argument is to be used by format.pval(). Maybe the description of 'eps.Pvalue' can be revised to refer

Hello, I have the following problem. I am trying to pxeboot a virtual machine using Sun's Virtualbox. I am trying to experiment with the menu options of pxelinux and this is my pxelinux.cfg/default file. # generated by fai-chboot for host cdbexample with IP 172.16.31.200 default menu.c32 prompt 0 default fai-generated timeout 300 #ONTIMEOUT local MENU TITLE PXE Menu LABEL fai-generated

Hello Rowland, thanks for your help. Below my comments Am Sa., 6. Apr. 2019 um 14:32 Uhr schrieb Rowland Penny via samba < samba at lists.samba.org>: > On Sat, 6 Apr 2019 10:58:15 +0200 > Martin Krämer via samba <samba at lists.samba.org> wrote: > > > Hello everyone, > > > > I have setup two Samba AD DC's running Debian 9 with BIND9_DLZ dns > >

Hello, I'm using the R package called mvpart, which is about the multivariate regression trees. The function I wrote is: mrt1<- mvpart(coefmat~sChip+sScreen+sMem,data=mixdata, xv="pick", plot.add=TRUE,uniform=TRUE,which=4,all=TRUE,xadj=2,yadj=2,rsq=TRUE,big.pts=TRUE,wgt.ave.pca=TRUE,legend=TRUE,bars=F, pca=TRUE) where "coefmat" is a matrix(of dimension N*K) to store

hi, i trying to install a fai installation server in a DomU for DomUs, but i have some problems with nfs. The DomUs says, that they can''t reach the NFS Server =========== Begin: Retrying nfs mount ... IP-Config: eth0 hardware address 00:16:3e:7a:25:7c mtu 1500 DHCP IP-Config: eth0 guessed broadcast address 172.16.0.255 IP-Config: eth0 complete (from 172.16.0.151): address:

Op woensdag 11 februari 2015 22:11:03 schreef Rowland Penny: > On 11/02/15 20:43, duportail wrote: > > Op woensdag 11 februari 2015 20:18:57 schreef Rowland Penny: > >> On 11/02/15 20:13, duportail wrote: > >>> Op woensdag 11 februari 2015 19:56:54 schreef Rowland Penny: > >>>> On 11/02/15 19:25, duportail wrote: > >>>>> Op woensdag 11

Op woensdag 11 februari 2015 20:18:57 schreef Rowland Penny: > On 11/02/15 20:13, duportail wrote: > > Op woensdag 11 februari 2015 19:56:54 schreef Rowland Penny: > >> On 11/02/15 19:25, duportail wrote: > >>> Op woensdag 11 februari 2015 19:09:48 schreef Rowland Penny: > >>>> On 11/02/15 18:29, duportail wrote: > >>>>> ( could not

Is anyone using FAI <http://www.informatik.uni-koeln.de/fai/> to install DomU''s? Our infrastructure is based heavily on using FAI for reproducing server configs so consolidating servers would go much nicer if if we could build the DomU''s with FAI. I''ve not put too much effort into solving my problems yet as I hope someone else ahs solved them for me :) The DomU

Op woensdag 11 februari 2015 19:56:54 schreef Rowland Penny: > On 11/02/15 19:25, duportail wrote: > > Op woensdag 11 februari 2015 19:09:48 schreef Rowland Penny: > >> On 11/02/15 18:29, duportail wrote: > >>> ( could not post complete reply, message too large?) > >>> > >>> > >>> I think that's why I have a lot of black screens

Hello! I want to SSH from host to specific guest using hostname, e.g. ssh <user>@<guest> or ssh test@vm02-fai ssh to guest using IP works w/o issues. I found Wiki article for "NSS module" (http://wiki.libvirt.org/page/NSS_module), but there are no results for the following commands: ld4004:/home # virsh net-dhcp-leases default Expiry Time MAC address

Dear R users, since R-2.4.0 I am not able any more to draw figures without transparency after drawing one figure with alphachannel set lower than 100%. For better unterstanding here a small example of my problem: ----------------------------------------------- pdf(paste("test_alpha_rgb.pdf",sep=""), version="1.4") plot(1:8, 1:8, type="n",

19. Juli 2017 17:19, c.monty@web.de schrieb: > 19. Juli 2017 17:12, c.monty@web.de schrieb: > >> 19. Juli 2017 16:36, "Michal Privoznik" <mprivozn@redhat.com> schrieb: >> >>> On 07/19/2017 04:27 PM, c.monty@web.de wrote: >> >> <snip/> >> >> Guest OS is Debian 9 with this network configuration: >> thomas@vm02-fai:~$

Dear R-Helpers, Is there a way to draw shaded (filled) polygons in panel graphs produced by xyplot ? I made different trials (see below) with polygon() and grid.polygon() but polygons are not drawn (probably for the same reason that prevents the use of lines, points, etc. in xyplot panels). Thanks in advance, Renaud > Water id label longitude latitude 515 21 Zone inondable

I'm new to R, after many years of using Matlab. I've found the R function 'polygon' to be nearly equivalent to the Matlab function 'patch'. For example, the R commands: plot(c(0, 5), c(0, 4), type = 'n', asp = 1, ann = FALSE) x <- c(1, 2, 2, 1.5, 1) z <- c(1, 1, 2, 1.7, 2) polygon(x, z, col = 'green') produce a plot with a small green shape exactly

Dear all, I had to place points at random, one in each of larger number of polygons (actually in objects of class 'SpatialPolygonsDataFrame' , see sp library), and tried first to do it using spsample (from sp). Surprisingly, every 5-15 trials, the output was a NULL value. The doc says that ' this may occur when trying to hit a small and awkwardly shaped polygon in a large