similar to: Singularity in simple ANCOVA problem

Hello forum! As the subject indicates, I am trying to make a barplot and would like my column names to be in bold. Is this possible in R without having to make my column names in mtext? Any help would be much appreciated. The code I am using is as follows. par(mar=c(3,8,2,2)) par(adj=.5) par(font=2) par(oma=c(3,3,3,3)) par(xpd=TRUE) Blot<-matrix(c(25.2995, 0.7625, 25.6135, 36.5770,

Dear R users; I am modelling densities of some species of birds, so I have a problem with a great ammount of zeros. I have decided to try GLMs with the tweedie family, but in all the models I have tried I got an NA for the AIC value. Just to check the problem I've compared the a glm using the Gaussian family with the identity link and a glm using the tweedie family with var.power=0 and

Dear Catarina, I prefer to leave the AIC value as NA for the tweedie GLM family because it takes extra time to compute and is only occasionally wanted. It's easy to compute the AIC yourself using the dtweedie() function of the tweedie package. Best wishes Gordon At 03:05 AM 14/08/2007, Catarina Miranda wrote: >Dear Gordon; > >I have also sent this email to R help mailing list,

Hello, One more question from the 'abusing R for blotting - particularly anally' department: How can I in the expression below make the '%~~%' show up as the aprrox-sign I want it to be? Thanks for any hint, Joh text( 500,1.5, cex=0.75, substitute( paste( OD[600][~nm], " of 1 at ", time1, " min ", "%~~%", time1h,

Hi all ! Thanks for the very good support of Dell R320 hardware, perc H310 is well supported, BCM5720 seems to work correctly and performances are great. The only problem i have found is very strange. The FreeBSD bootloader take many times to load, 30sec-2minutes to boot the kernel and show the bootloader menu. After that, the system boots properly, at a normal speed. Is there any issue or

Hello, I'm blotting a series of growth curves into a multiplot environment created with layout(). since I want the four plots to be easily visually comparable, I do the following: #first plot plot(x,y,<stuff>) standarduser<-par()$usr ... <some fitting> ... lines(spline(x, <fitted_equation>)) #everything all right till here # second plot plot(x,y,<stuff>)

(Sorry for obvious mistakes, as I am quite a newby with no Statistics background). My question is going to be what is the gain of logistic regression over odds ratios when none of the input variables is continuous. My experiment: Outcome: ordinal scale, ``quality'' (QUA=1,2,3) Predictors: ``segment'' (SEG) and ``stress'' (STR). SEG is nominal scale with 24

I'm trying to wean myself off the very limited capabilities of Excel and Oo. Currently, I am trying to make a plot showing several values for 2 categories in a dot blot (see http://www.nabble.com/file/p24538360/Picture%2B1.png Picture+1.png except that the x axis should contain the category not a number, which was the only way to coax Excel into displaying a plot like this). I started

trying this: clang -march=armv7-a -mcpu=cortex-a9 -ccc-host-triple arm-none-linux -ccc-gcc-name arm-none-linux-gnueabi-gcc a.c 2010/9/10 Emmanuel Blot <eblot.ml at gmail.com>: > Hello, > > Is there a quick tutorial to build the LLVM toolchain from a Linux or > Mac OS X x86 host for an ARM v4/v5/v6 ELF target? > It this configuration supported, and is it possible to build the

Please let me know your interest in following. Location: Columbia, SC Duration: 12 months+ Rate: $65/hr 1099/c2c Required Skills: RUBY, RAILS, GIT, MYSQL, CUCUMBER, RSPEC, JQUERY, EXCELLENT ORAL AND WRITTEN COMMUNICATION SKILLS, TEST-DRIVEN DEVELOPMENT, LINUX, OS X, JSON, COMMAND LINE, SQL, SSH, HAML, SCSS Thanks Sandeep Sandeep Jain Software People Inc. www.softwarepeople.us

I've been using syslinux on my own Linux recovery CDs for almost a year now, and in that time I've found it useful to be able to automatically load a 64-bit-capable kernel if the CPU supports it. I'd like to share my efforts and submit this patch for syslinux-3.31. It adds a new config file keyword, 'default64', which overrides the default image if a 64-bit CPU is detected.

Hello, Since FreeBSD 9.1 I have strange problems with the distribution. Some servers are rebooting without any kernel panic, instanly. First i thought it's a problem with my KVM system, but one of my FreeBSD under a Dell R210 have the same problem. The servers concerned are now: - Monitoring server - LDAP test server - Some other servers, randomly (not in production). First i thought it's

Dear List, I am sorry if this perhaps a too basic question, but I have not found an answer in Google or in the R help system. I am trying to use R to do a very simple analysis of some data (RT-PCR and Western analysis) with a T-test and to plot the results as a histogram with error bars. (I have pasted an example script at the bottom of this mail). In order to use this for publication, I would

Hi, I am running a logistic regression model and then cross-validating it. But, 10-fold cross validation returns with following error message. "Divergence or singularity in 5 samples" Actually, I tried reading definition of divergence and singularity, but could not understand it in context of my error. Could some one please explain it to me in simpler words. This also begs another

Greetings- Using R 1.5.0 under linux and the latest MASS and nlme, I am trying to develop a three-level (two levels of nesting) model with a dichotomous oucome variable. The unconditional model is thus: > doubt1.pql<-glmmPQL(fixed = r.info.doubt ~ 1, random = ~1 | groupid/participantid, + family = binomial, data = fgdata.10statements.df) iteration 1 iteration 2 iteration 3 iteration 4

Dear R, If I have remembered correctly, a square matrix is singular if and only if its determinant is zero. I am a bit confused by the following code error. Can someone give me a hint? > a <- matrix(c(1e20,1e2,1e3,1e3),2) > det(a) [1] 1e+23 > solve(a) Error in solve.default(a) : system is computationally singular: reciprocal condition number = 1e-17 Thanks in advance! Feng --

I am posting this here because the other posters in AppDB say the game works fine. For me, the video is slow and jerky, not playable at all. System: Dell XPS630 q9550 dual core-2, 8gm RAM, 2x NVIDIA 9800GT, lots of disk space (meets all system requirements) kUbuntu-10.04, all current updates, nvidia 195.36.24 driver. Have tried kde, gnome, and lxde desktops (compositing disabled), same problem in

Have you tried setting linux capabilities, like NET_BIND_SERVICE,CHOWN,SYS_CHROOT,SETGID? Have you checked the permissions of paths? I had to relocate the run dir with things like these && mkdir /var/dovecot \ && mkdir /var/lib/dovecot \ && (umask 027 ; mkdir /var/dovecot/login) \ && (umask 022 ; mkdir /var/dovecot/empty) \ && (umask

Hi all, When using lm to model a response with 8 explanatory variables, one of the variables is not defined due to "singularities". I have checked the csv file from which the data come, there are no na's in the dataset, etc. What should I be looking for in this variable to correct the problem? Thanks for any help. Robin Williams Met Office summer intern - Health Forecasting

I have two specific questions regarding the output of lda function in MASS. #Question1: #========= n: sample size, p: number of variables Some articles in the literature say that LDA is singular for p > n-1. However, my experimentation with lda (default arguments) for two class problems shows collinearity for p > n-2. Does anyone know why this is the case? Does lda (MASS) use a different