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acos(0 5) == pi/3 FALSE
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QQ plot for deviance residuals in generalized linear models

Hello In an article in J. Computational and Graphical Statistics v 13 p. 36-47 Ben and Yohai propose quantile quantile plots for deviance residuals of generalized linear models Normal quantile

help with multivariate analysis

dear R users I need some help for multivariate analysis. I have 2 anaesthetic treatment groups (20 patients/group) where I register heart frequency and pressure for 60 min (repeated measures every

sample matrix as a new object

Please I�d like to store this sample matrix as a new object. How can I do this ? pulse <- c(67 67 68 68 68 69 69 69 69 69 70 70 70 70 71 71 72 72 73 74) m <- NULL x <- 0 for (i in

How to make a plot?

Does anyone have an idea of how to make a chart in R like the ones here that use a graphic http //bigpicture.typepad.com/comments/images/slide1.gif

superimpose density line over hist

Hi all I 'm trying to superimpose a rchisq density line over a histogram with something like hist(alnlength) lines(density(rchisq(length(alnlength) 4)) col "red ") But the rchisq line won 't appear

Constrained Log-Likelihood with SQP Solver

Dear R-Users I 'm searching for somebody who can support me or even likes to collaborate with me in setting up an R-package for "constrained maximim log-likelihood " parameter estimation. For ex

Incomplete Beta

Is there any function available in R for computing the incomplete Beta function? I 'll appreciate any suggestion -- Albert Sorribas Grup de Bioestad�stica i Biomatematica Departament de Ci�ncies M�di

sample matrix

Please I�d like to store this sample matrix as a new object. How can I do this ? pulse <- c(67 67 68 68 68 69 69 69 69 69 70 70 70 70 71 71 72 72 73 74) m <- NULL x <- 0 for (i in

help with writing function

I 'm trying to write a function that takes a vector of length n and then takes the first value of the vector i.e j 1 and forms a new vector of length n (i.e replicate the first value n times). This

help for multivariate analysis

dear R users I need some help for multivariate analysis. I have 2 anaesthetic treatment groups (20 patients/group) where I register heart frequency and pressure for 60 min (repeated measures every

Comments please, how to set your mailer to read R-help in digest format

2005/12/12 Michael Dewey <info@(protected) > > > There are occasional comments on this list about how difficult it is to > read the digest format. > [snip] Any other comments welcome of cours

Problem with understanding output of Cox model

Hi all I am using a 'tricked ' Cox Hazard regression model for discrete choice habitat modelling. However I 'm having a hard time understanding the meaning of the first line the following part of th

about empirical sample size in partial correlations

Hello everyone I have estimated the partial correlations of a matrix (n0 vars 7) with command pcor.shrink (library corpcor) and then i want to estimate their respective confidence intervals. So i h

Labeling a range of bars in barplot?

Is this what you want... op <-par(xpd TRUE) segments(0 -1 20 -1 col 2) text(10 -1 "Interval " pos 1) Cheers Hans Gardfjell Dept. of Ecology and Environmental science Ume� University Sweden Dan B

Labeling a range of bars in barplot?

Hi I am plotting a distribution of (ordered) values as a barplot. I would like to label groups of bars together to highlight aspects of the distribution. The label for the group should be the rang

Technique for reading large sparse fwf data file

Dear list A datafile was sent to me that is very large (92890 x 1620) and is *very* sparse. Instead of leaving the entries with missing data blank each cell with missing data contains a dot (.) Th

problem with R on mac os x

Hello all R just ' 'stopped working ' ' on my machine (ibook g4 os 10.3.9). between last time I used it and now I did not do anything but check emails and browse the internet. when I try to start t

marginal effects in glm 's

Hi I wonder if there is a function in (some package of) R which computes marginal effects of the variables in a glm say for concretness a probit model. By marginal effects of the covariate x_j

dendrogram: how to obtain leaf height

Dear All How can the height of a leaf be extracted from a dendrogram? Sure I can print it but I am not able to say store it in an object. I think I understand that the height is a property of t

Bivariate Splines in R

Hi.. is there a function in R to fit bivariate splines ? I came across 'polymars ' (POLSPLINE) and 'mars ' (mda) packages. Are these the one to use or are there other specific commands? Thanks.

permutation test for linear models with continuous   covariates

What do you want to test? To test H0 Y is independent of all X 's you can permute Y. To test H0 a particular X does not contribute to predicting Y conditional on the other X 's you have to be

Time delay function or plot animation

Dear R-help crowd is it possible to specify a time delay for plotting the points in a curve? I would like to make the plotting process slow enough to show the development of the graph and therefore

Comments please, how to set your mailer to read R-help in digest format

There are occasional comments on this list about how difficult it is to read the digest format. Since it took me a few false starts to configure my mailer to do it I have (with the encouragement of

convergence error (lme) which depends on the version of nlme (?)

Dear list members the following hlm was constructed hlm <- groupedData(laut ~ design | grpzugeh data imp.not.I) the grouped data object is located at and can be downloaded www.anicca-vijja.d

date handling

Hi Given a frame with calendar date 's "2005-07-01 " "2005-07-02 " "2005-07-03 " "2005-07-04 " "2005-07-05 " etc. I want to extract the following from these dates week number month number year numbe

Generation of missiing values in a time serie...

Hi I am a R begginer and I have a small problem with time series. I was wondering if someone could help me I am collecting data from packets going through a network and using R for obtaining

how to import the large SPSS data file into R?

I have a spss format data file which is about 134M and I want to read it into R and analysis the data. I plan to split the file into 4 parts and then use read.spss to read it but during the process th

trellis: style of axis labels

Hello is it possible to get xyplot of package lattice to acknowledge par(las 2)? In my trellis plot the x-axis lables are overlapping (they 're factors with rather long level names) and I 'd like to

export from R to MySQL

Hi R user! What is the fastest way to export a large matrix or vector to a MySQL database? The use of data.frame() and dbWriteTable() makes the process slow so is there any <direct > alternative?

lme intervals

Hi Dieter No because I 'm looking for the CIs on the means of baLO of an additive model which has 20 cells exactly as stated. Essentially I want to have the values of 'lower ' and 'upper ' to plu
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