similar to: Fisher's LSD multiple comparisons in a two-way ANOVA

Hi there, The following data is obtained from a long-term experiments. > mydata <- read.table(textConnection(" + y year Trt + 9.37 1993 A + 8.21 1995 A + 8.11 1999 A + 7.22 2007 A + 7.81 2010 A + 10.85 1993 B + 12.83 1995 B + 13.21 1999 B + 13.70 2007 B + 15.15 2010 B + 5.69 1993 C + 5.76 1995 C + 6.39 1999

Please help. I really like R and I have been looking at how to do LSD multiple comparison test with data that has more than one factor. So far, I am unsuccessful. Please help! Me

Hi there, ============================= x=c(145,40,40,120,180, 140,155,90,160,95, 195,150,205,110,160, 45,40,195,65,145, 195,230,115,235,225, 120,55,50,80,45 ) y2=c( rep(as.character(1),5), rep(as.character(2),5), rep(as.character(3),5), rep(as.character(4),5), rep(as.character(5),5), rep(as.character(6),5) ) crd2=data.frame(x,y2) model1=aov(x~y2,data=crd2) TukeyHSD(model1)

I am returning this to the R-help list. Please keep followups on the list. Yes, it can be done. It is not currently easy because multcomp doesn't have the syntax yet. Making this easy is on Torsten's to-do list for the multcomp package. See the MMC.WoodEnergy example in the HH package. The current version on CRAN is HH_1.17. Please see the discussion of this example in R-help:

Hi there, I am a Chinese R user. I hope to display Chinese character in a plot, and than save it in PostScript format. I have read the article titled "Non-Standard Fonts in PostScript and PDF Graphics", especially the section about CJK fonts. I also tried the code: > pdf("chinese.pdf", width=3, height=1) > grid.text("\u4F60\u597D", y=2/3,

Hi there, I don't know why the following codes are return different results. > ifelse(3 > 2, 1:3, length(1:3)) [1] 1 > if (3 > 2) 1:3 else length(1:3) [1] 1 2 3 Any hints? Best, Jinsong

Hello, I am trying to determine the most appropriate way to run post-hoc comparisons on my lme model. I had originally planned to use Tukey HSD method as I am interested in all possible comparisons between my treatment levels. TukeyHSD, however, does not work with lme. The only other code that I was able to find, and which also seems to be widely used, is glht specified with Tukey:

It looks like an encoding problem. It works fine for me with R encoding set to UTF-8 Here is part of my sessionInfo() results [1] LC_CTYPE=en_CA.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_CA.UTF-8 LC_COLLATE=en_CA.UTF-8 [5] LC_MONETARY=en_CA.UTF-8 LC_MESSAGES=en_CA.UTF-8 I would suggest issuing the command sessionInfo() and seeing what your encoding is. On Tue, 20 Oct 2020 at 08:22,

Hi I have some experimental data where I have counts of the number of insects collected to different trap types rotated through 5 different location (variable -location), 4 different chemical attractants [A, B, C, D] were applied to the traps (variable - semio) and all were trialled at two different CO2 release rates [1, 2] (variable CO2) I also have a selection of continuous variables

I have data that looks like this: > df1 group id 1 red A 2 red B 3 red C 4 blue D 5 blue E 6 blue F I want a list of the groups containing vectors with the ids. I am avoiding subset(), as it is only recommended for interactive use. Here's what I have so far: df1 <- data.frame(group=c("red", "red", "red", "blue",

Dear R users, I have used the following model: M1 <- gls(Nblad ~ Concentration+Season + Concentration:Season, data=DDD, weights=varIdent(form=~ 1 | Season*Concentration)) to assess the effect of Concentration and Season on nitrogen uptake by leaves (Nblad). I accounted for the difference in variance across the factor levels by using the varIdent function. Then I wanted to perform multiple

Hi there, According to ?par, 'font' is an integer which specifies which font to use for text, that 1 corresponds to plain text (the default), 2 to bold face, 3 to italic and 4 to bold italic. When I test Chinese character in pdf(), I found that 1 to bold face, 2 to italic, 3 to bold italic, 4 to symbol. and I don't find how to set plain text. In the following code, the font to use

Hi there, I tried to export the names of country to a csv file with write.csv(). In the resulted file, ?land was coverted to <c5>land. Is there any way could prevent this happening? Thanks! > abc [1] "?land" > write.table(abc, file = "") "x" "1" "<c5>land" Best, Jinsong

Hi there, Why the same string is displayed in different form? > abc[,1] [1] "?land" "Afghanistan" > abc name 1 <c5>land 2 Afghanistan And more... > dput(abc, "aa.txt") > dget("aa.txt") name 1 <c5>land 2 Afghanistan > dget("aa.txt")[,1] [1] "<c5>land"

Hi there, I hope to draw a plot like this: http://www.sg-chem.net/swizard/Ru-bqdi-spectra.gif is it possible to draw it using R? thanks for any suggestions. regards, Jinsong

Hi, I'm trying to make sense of the options for multiple comparisons options in R. I've found the following options: pairwise.t.test, which provides standard t-tests, with options for choosing an appropriate correction for multiple comparisons TukeyHSD, which provides the usual Tukey test glht(package multcomp), which provides a variety of options >From the help list, it appears

Dear all, I have encountered a problem when perform stepwise regression. The dataset have more 9 independent variables, but 7 observation. In R, before performing stepwise, a lm object should be given. fm <- lm(y ~ X1 + X2 + X3 + X11 + X22 + X33 + X12 + X13 + X23) However, summary(fm) will give: Residual standard error: NaN on 0 degrees of freedom Multiple R-Squared: 1, Adjusted

hi there, I find the following codes produce strange output. plot(1:10, xlab = expression(NO[3]^-~(mg/L))) you will notice that the unit, mg/L is in superscript format. That means that "~" is not for space. However, the help page of plotmath does not mention this behavior. Best, Jinsong [[alternative HTML version deleted]]

Hi there, I just noticed that "crt" is a graphical parameter, which is stated as follows in the help page of "par": A numerical value specifying (in degrees) how single characters should be rotated. It is unwise to expect values other than multiples of 90 to work... However, I did not find any code example to demo the usage of "crt", and even know how to present a

Hi Jinsong, Maybe "srt" will do what you want. As you noted non-orthogonal rotations may not work on some devices. You may be able to download mirror fonts from places like fontmirror.com, but it more complicated. Jim On Thu, Mar 30, 2023 at 7:25?PM Jinsong Zhao <jszhao at yeah.net> wrote: > > Hi there, > > > I just noticed that "crt" is a graphical