similar to: general question on binomial test / sign test

Displaying 20 results from an estimated 4000 matches similar to: "general question on binomial test / sign test"

2010 Aug 25
5
lattice help required
hello, i want to stack two lattice plots beneath each other using one x-axis and sharing the same text-panels, like: ##################################################################### library(lattice) y1 <- rnorm(100,100,10) y2 <- rnorm(100,10,1) facs<-expand.grid(Sites=rep(c("Site I","Site II"),25),Treatment=c("A","B")) pl1<-dotplot(y1 ~
2010 May 04
4
superscript
hello, i need to add legend text: "4th-root transformation", with the "th" superscripted - tried much - but nothing worked.. thanks for any hints, kay ----- ------------------------ Kay Cichini Postgraduate student Institute of Botany Univ. of Innsbruck ------------------------ -- View this message in context:
2011 Nov 04
3
replace double backslash with singel backslash
I want to replace \\ with \ in: str <- "C:\\DOKUME~1\\u0327336\\LOKALE~1\\Temp\\RtmpQ5NJ8X\\TIRIS_PICS\\1_Img.jpg" and tried: gsub("\\\\", "\\", str) but this removes the \\ without replacing them by \ Any help much appreciated, Kay ----- ------------------------ Kay Cichini Postgraduate student Institute of Botany Univ. of Innsbruck ------------------------
2010 Jan 19
1
restricted permutations in permtest()?
Hallo List, I'm trying to implemement a restricted permutation scheme in permutest(). More precisely I have dependence in my data that should be allowed for in the permutation - I simulated the problem in the example of the vegan documentation p.24: library(vegan) data(varespec) ## Bray-Curtis distances between samples dis <- vegdist(varespec) ## First 16 sites grazed, remaining 8 sites
2010 Aug 24
1
tick marks on both sides of axis
hello, all my attempts to get a plot with tick marks on both sides of axis failed - can someone please help me with this? thanks, kay ----- ------------------------ Kay Cichini Postgraduate student Institute of Botany Univ. of Innsbruck ------------------------ -- View this message in context: http://r.789695.n4.nabble.com/tick-marks-on-both-sides-of-axis-tp2336668p2336668.html Sent from the
2010 Apr 28
1
model selection, lme
hello, i'd like to evaluate the 2 factors (f1 with 4, f2 with 2 levels) and its interactions in my model for writing up a summary table with likelihood-ratio tests for publication purpose. now i'm unsure about which terms of my model may be dropped from the full model and which not. mfull<-lme(resp~f1*f2,random=...) m1<-lme(resp~f1+f2,..) m2<-lme(resp~f1,..)
2010 May 06
1
how to extract from obj. created by plot function stressplot without printing plot?
hello, i'd like to extract values from stressplot, but as this should happen within a long run of code, which also does a multiple plot, i need to prevent stressplot to print to the device. i tried ..,plot=F), but this is useless. any advise on this? thanks, kay ----- ------------------------ Kay Cichini Postgraduate student Institute of Botany Univ. of Innsbruck
2011 Sep 05
1
help with installing tar.gz package
hi, i'd like to install the package "RGoogleDocs ". i downloaded to path "E:/R/R-2.13.0/library/RCurl_0.91-0.tar.gz" i run R from an usb-stick and can't get the install.packages() prompt to run correctly - can anyone help with this? thanks, kay > sessionInfo() R version 2.13.0 (2011-04-13) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1]
2010 Oct 13
1
interaction contrasts
hello list, i'd very much appreciate help with setting up the contrast for a 2-factorial crossed design. here is a toy example: library(multcomp) dat<-data.frame(fac1=gl(4,8,labels=LETTERS[1:4]), fac2=rep(c("I","II"),16),y=rnorm(32,1,1)) mod<-lm(y~fac1*fac2,data=dat) ## the contrasts i'm interressted in: c1<-rbind("fac2-effect in
2010 Aug 19
1
logistic regression tree
hello everyone, i sampled 100 stands at 20 restoration sites and presence of 3 different invasive plant species. i came across logistic regression trees and wonder if this is suited for my purpose - predicting presence of these problematic invasive plant species (one by one) by a set of recorded ecological / geographical parameters. i'd be glad if someone would comment on applying this
2010 Aug 20
5
paired samples, matching rows, merge()
Hi everyone! I'm matching two samples to create one sample that have pairs of observations equal for the k1 variable. Merge() doesn't work because I dont't want to recycle the values. x <- data.frame(k1=c(1,1,2,3,3,5), k2=c(20,21,22,23,24,25)) x y <- data.frame(k1=c(1,1,2,2,3,4,5,5), k2=c(10,11,12,13,14,15,16,17)) y merge(x,y,by="k1") k1 k2.x k2.y 1 1 20
2012 Oct 30
2
bootstrapping quantile regression
HI everyone, I try to get some bootstrap CIs for coefficients obtained by quantile regression. I have influencial values and thus switched to quantreg.. The data is clustered and within clusters the variance of my DV = 0.. Is this sensible for the below data? And what about the warnings? Thanks in advance for any guidance, Kay > dput(d) structure(list(Porenfläche = c(4990L, 7002L, 7558L,
2010 May 19
2
contrasts for lmer model
hello, i found it most convenient to use package contrast for planned comparisons on mixed models. for instance i have a model with 2 fixed factors, one with 4 levels (stage) and one with 2 levels (gap) and a nested random factor (site) and i tested gap within level A of factor stage: library(contrast) library(nlme) m1<-lme(rich ~ stage*gap, random=~1|site,data=richness) contrast(m1, a =
2013 Jan 25
1
Testing continuous zero-inflated response
Hello, I'm searching for a test that applies to a dataset (N=36) with a continuous zero-inflated dependent variable and only one nominal grouping variable with 2 levels (balanced). In fact there are 4 response variables of this kind which I plan to test seperately - the amount of zeroes ranges from 75 to 97%.. I searched the web and found several modelling approaches but have the feeling
2012 May 04
2
Test if a sample mean of integers with range -inf; inf is different from zero
Hi all, how would you test if a sample mean of integers with range -inf;inf is different from zero: # my sample of integers: c <- c(-3, -1, 0, 1, 0, 3, 4, 10, 12) # is mean of c <> 0?: mean(c) Thanks, Kay [[alternative HTML version deleted]]
2010 Mar 01
4
repeated measures anova, car package
Hello list, I' d very much appreciate some help with a two sample repeated measures ANOVA. I did the analysis yielding sign. main effects (between subj.=site, within subj.=cover) and a sign. interaction: Univariate Type II Repeated-Measures ANOVA Assuming Sphericity SS num Df Error SS den Df F Pr(>F) site 18.7620 1 18.831 10 9.9631 0.010220 *
2010 Feb 02
2
hvcluster() with distance method from vegdist(), package = vegan
hello, i'd be happy if someone could provide help with the following problem: i have a dist.matrix that comes from vegdist() function of the vegan package. the used method = "horn" is not accepted as argument in hvcluster(...,dist.method="..."). is there a way to incorporate the method "horn" in hvcluster()? thanks in advance! yours, kay -- View this
2010 May 27
1
stripplot, lattice
hello, i can't figure out how to set position of panels of my stripplot - i`d like the panels of one level of the factor stage (nr. of panels within each stage, A: 12, B: 12, C: 12, D: 4, each panel representing a site) to be in one column, with A to D from left to right and with descending site.nr at each row. like: A1 B1 C1 D1 A2 B2 .. .. A3 .. .. .. how is this achieved? any help
2011 Nov 01
1
Sample size calculations for one sided binomial exact test
I'm trying to compute sample size requirements for a binomial exact test. we want to show that the proportion is at least 90% assuming that it is 95%, with 80% power so any asymptotic approximations are out of the questions. I was planning on using binom.test to perform the simple test against a prespecified value, but cannot find any functions for computing sample size. do any exist?
2010 Mar 16
3
boxplot, vertical position of x-axis labels
hello, i can't figure out how to change the vertical position of my x axis labels.. boxplot(c(1:12)~c(rep("1",6),rep("2",6)),at=c(1,2), col=c(0,"grey"),las=1,xaxt="n") ### i put paragraphs in the x-labels because of limited horizontal space axis(1,at=c(1,2),adj=1,labels=c("Salix Scrub","Tall Forb")) ...the labels are one line