search for: grassi

Hi. How can i simulate a binary data set from a logistic regression model?I need to manipulate parameters and so obtain my set of data. I want to show the improve in analyzing binary data with GLM(binomial) model instead of classical ANOVA or NON-MODELS procedures(relative risk-odds ratio-Pearson test of godness of fit...) Can you say me what is the right function to use? Do you know any

where is the cook-distance in R? i can't find it!please help me!

I've been thinking hard about generating colour schemes for data. There's quite a bit of existing code scattered in various packages for playing with colours and colour palettes, but I can't find the sort of thing I'm after for applying colours to data... To my mind a colour scheme is a mapping from data values to colours. There's a multitude of such mappings depending on the

...REMENT=en_US.utf8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base $ uname -a Linux femto 3.6-trunk-amd64 #1 SMP Debian 3.6.9-1~experimental.1 x86_64 GNU/Linux I use the debian R package: r-base-core, 3.0.0~20130324-1 Thanks, Elena Grassi ps. I started on R-help as long as this could be of general interest, sorry if that's a bad call. -- $ pom

...REMENT=en_US.utf8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base $ uname -a Linux femto 3.6-trunk-amd64 #1 SMP Debian 3.6.9-1~experimental.1 x86_64 GNU/Linux I use the debian R package: r-base-core, 3.0.0~20130324-1 Thanks, Elena Grassi ps. I started on R-help as long as this could be of general interest, sorry if that's a bad call. -- $ pom

Hi. 1)I have two variables: call a<-c(e.g.0,3,6,7...) b<-c(e.g.6,8,3,4...) I want to create a third vector z wich contain the pairs values z<-c(0,6,3,8,6,3,7,4....and so on for each pairs (a,b)). There is a specific function? How can i write my own function? 2)When i try to write a function and then i save it like "function.R" file, i try to

Whenever I use "..." in the formula of the cast function, from the reshape package, I get the following error: Error in `[.data.frame`(data, , variables, drop = FALSE) : undefined columns selected For example: data(french_fries) #available in the reshape package > head(french_fries) time treatment subject rep potato buttery grassy rancid painty 61 1 1 3 1

how can i draw a 3d scatter plot? thank you.

Hy guy's, thank you for the fantastic job you are doing. I need to know if xen 3.1 will ever included in etch, basically for the suspend/live migration issue for HVM guest's in Xen 3.0.X. Best Regards Christian Grassi -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.alioth.debian.org/pipermail/pkg-xen-devel/attachments/20070802/23240645/attachment.htm

I have a data set that I'm trying to melt and cast in a specific way using the reshape package. (I'll use the ff_d dataset from reshape so I don't have to post a toy data set here. ) Lets say I'm looking for the interaction of treatment with each type of "variable" in ff_d. Using the command below gets me this. Subject will get a column and each treatment type by each

Hi, When i load my workspace, i visualize my object with the ls()function. First problem is that the saved graph is open like a list instead of an image!What is wrong? Second problem is about scatterplot graph: how can i identify a specific point? Thanks. Michele.