 | | | rhelp | | Hello
Is there a way to obtain clustered boxplots similar to the
ones provided by SPSS? I have a dependent variable (y axis)
an independent factor (which I intend to represent with
different colorsHi
Could any one tell me how can I apply PCA for Affy data.
i have used prcomp but I get following error
Error in colMeans(x n prod(dn) na.rm)
invalid value of n
Thanks
Saeedeh
Vivek
I certainly would agree that every help page including the one of
svm() could be improved but I think it is not _that_ deficient. In
particular it tells you which parameters are used in tDear all
in an LDA analysis with n groups n-1 LD functions result. Implicitly this
defines an LD fucntion for the last group. Does there exist code already
to explictly construct this LD function?
Hi there
I have created a multivariate logistic regression model looking at the
presence/absence of disease on farms. I would like to plot the diagnostic
plots recommended by Hosmer & Lemeshow to lHi
I need to display several plots and I wonder if it is possible to create a graphic window with tabs so that the plots can be scrolled clicking on the tabs
Best regards
Marco
[[alternativehi
i am really sorry to ask this on the list but i havent been able to
find anything on this topic.
i would like to know how the various parameters in the svm function
call in library e1071 work. How can one convert back slashes to forward slashes e.g changing
"c \a\b " to "c /a/b "? I tried the following
> gsub( "\\\\ " "/ " "c \a\b ")
[1] "c \a\b "
Since this didn 't work I eliminatDear useRs
Is there a way to convert a list generated by "by " command into a data frame?
Or more generally are there any functions that operate on "by " lists?
My "by " list consists of numeric vectIs there a way in R to globally setup a default format for dates for all or
nearly all or just "many " R date/time-related functions?
For example dates in library(chron) expects by default MDY wiWhen I try the following code with the Windows
graphics window a new window is opened for each
multiple of four images I produce.
par(layout(matrix(c(1 2 3 4) 2 2 byrow TRUE))
mar c(2 3 2 Hi Laura
How about the following
> sapply(x1.df class)
d x y
"factor " "numeric " "numeric "
> (byLH <- by(x1.df[-1] x1.df$d var))
x1.df$d 1/1/2005
x Hi
The description of all.equal states "is.all.equal should be used for
programming typically in if expressions. It is a simple wrapper using
identical as shown in the documentation there. " but isDear everybody
In our game-theory lesson we have run several classroom-experiments where the
students had to decide for a natural number between one and seven. I have
troubles now to visualize the
John
In addition to 'VarCorr(nlme) and VarCorr(Matrix) ' you could also try
'varcomp ' function in the 'ape ' package.This requires an 'lme ' class of
file from the 'nlme package as input.It additionDear List
If any of observed and/or expected data has less than
5 frequencies then chisq.test (Pearson 's Chi-squared
Test for Count Data from package stats) gives warning
messages. For example
Could someone identify a function that I might use to perform a
components of variance analysis? In addition to the variance
attributable to each factor I would also like to obtain the SE of the
vari
Hi
In src/nmath/dgamma.c the comment at the top says
* DESCRIPTION
*
* Computes the density of the gamma distribution
*
* 1/s (x/s)^{a-1} exp(-x/s)
* p(x a What I would say might depend on the job and the organizition to
which I was applying. At a minimum I might list under "languages " "R
(a primary platform of choice for new statistical algorithmOkay Spencer 's response points up my mistake in my
explanation. Let me put the question another way.
Here 's the computer skills sections of my cv
Office Suites Microsoft Office Lotus SmartSuite Afternoon folks
This question may be a touch off-topic but I had to start
somewhere.
As I become more proficient with R I would like to play up
the point in the computer skills section of my resumI am trying to add confidence (error) bars to lattice barcharts (and
dotplots and xyplots). I found this helpful message from Deepayan
Sarkar and based teh code below on it
http //finzi.psych.upenn.Im trying to ascertain whether or not the facilities of R are sufficient for solving an optimization problem I 've come accross. Because of my limited experience with R I would greatly appreciate someTook me a while but I figured out how to put in common values of
group means/counts etc. to do the same thing as egen. lapply with
split and then unsplit.
Thomas Davidoff
Assistant Professor
HaaError in "[ <-.data.frame "(`*tmp*` j "signal " value 1)
unprotect() stack imbalance
What could have geerated this error? Where should I start looking?
Charles David Keeling the world 's leading authority and pioneer
on atmospheric greenhouse gas accumulation died Monday
evening of a sudden and unexpected heart attack following a
short hike in hiI have a list that has about 50 elements each repeated many times (a
list of states by observation). I want to create a vector with the
same length with the same value repeated over and over agaI use CGIwithR to run a website that executes R scripts under cgi-bin.
Are there any projects that implement a work frame using R similar to
Java 's servlet engine?
Initialization times are hurting. CHi
I have a problem in getting step function work. I am getting the following error
> fit1 <- lm(Response~1)
> fmla <- as.formula(paste( " ~ " paste(colnames collapse "+ ")))
> sfit <- step(fit1 sHi there
I am trying to compute Gini coefficients for vectors containing income classes. The data I possess look loke this
yit <- c(135 164 234 369)
piit <- c(367 884 341 74 )
where yit is |
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