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Hi, Is there a package that could do response surface analysis equivalent to SAS RSREG procedure? Thanks! Regards, Jinsong

On 2010-11-28 19:46, Stephen Liu wrote: > Hi folks, > > Which R packages containing sample .xls files? TIA > why do you need .xls format data file? > B.R. > Stephen L > >

On 2012-08-24 8:58, David Douterlungne wrote: > Hi all, > > Is there a R-function that orders Tukey results with conveniant letters, similar to the SPSS output (A, AB, ABC, C, etc.) . > library(multcompView) ?multcompLetters

Hi there, I hope to use a string as an input in my function, however, I don't want to input the quotation mark. Is it possible? Thanks in advance. Regards, Jinsong

Hi there, I hope to use a string as an input in my function, however, I don't want to input the quotation mark. Is it possible? Thanks in advance. Regards, Jinsong

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 there, Does anyone here know where does the R Graph Gallery (http://addictedtor.free.fr/graphiques/) move to? I googled, but don't find any useful hints. Any help? Thanks in advance! Best, Jinsong

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...

Hello, I hope to plot my data in a dot diagram, something like the output of the last example of layout function in graphics package. The only difference is that I need the rectangle in histogram is replaced by dot...

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...

Hellow, I plot a 3D scatter plot using cloud function in lattice package. Although, I have read the help of cloud, and panel.cloud, I did not find a way to remove the framebox out the 3D scatter plot. Any...

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...

Hi all, The package crossdes could contruct a complete sets of mutually orthogonal latin squares. The construction works for prime powers only. I hope to know whether there is a way to construct a mutually orthogonal Lation square for 10...

Hi, Is there a function to do principal factor analysis in R? I am reading through ``A user's guide to principal components'' by J. E. Jackson. In Table 17.1, a comparison between principal components and common factors, and...

It's my fault. And now, it works. Bests, Jinsong On 2014/4/20 0:43, Jinsong Zhao wrote: > Hi there, > > I am newbie to dynamic system modeling. So I start from simple model. I > have a simple mode with...

Hi there, I try to plot visible light spectrum (380nm~780nm) with color corresponding to the specific wavelength. However, I don't find a function that could do this. Another question, it's possible to plot a color space chromaticity...

Hello, I plot a 3D plot/surface using cloud function in lattice package. Several days ago, I post a question about how to remove the framebox out the 3D plot/surface. However, I think I don't make me understood...

Dear all, In one S+ program, I found the following code. if (impres) cat("blah blah blah \n") Would someone here like to tell me what's the counterpart in R to impres in S+? Thanks in advance! Best wishes...

Hi, I hope to use R to perform some hypothesis testing, such as t.test() and var.test(). However, I don't find a function that could do test on means with variance known (i.e., u test or z...

Hi there, The following code would cause R error: > w <- 1:5 > r <- 1:5 > if (is.matrix(r)) + r[w != 0, , drop = FALSE] > else r[w != 0] Error: unexpected 'else' in " else" However, the code: if (is.matrix(r...