search for: loadednamespac

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2008 Nov 28
2
AIC function and Step function
I would like to figure out the equations for calculating "AIC" in both "step() function" and "AIC () function". They are different. Then I just type "step" in the R console, and found the "AIC" used in "step() function" is "extractAIC". I went to the R help, and found: "The criterion used is AIC = - 2*log L + k *
2020 Oct 23
0
vanilla session in R Gui or RStudio
Can you be more specific about what conditions cause R to automatically load a package when a .RData file is loaded? My experience has actually been the opposite. On October 22, 2020 6:13:11 PM PDT, Henrik Bengtsson <henrik.bengtsson at gmail.com> wrote: >As Jeff says, it might be that you have a ~/.Rprofile file with >instructions to load packages when R starts. It could also be
2020 Oct 23
3
vanilla session in R Gui or RStudio
As Jeff says, it might be that you have a ~/.Rprofile file with instructions to load packages when R starts. It could also be that you have a .RData file, which is saved if you answer yes to: > Save workspace image? [y/n/c]: y when you quit R. If this file exists, then R loads it and all the objects you had when you saved it. If there are objects associated with packages, then
2006 May 12
2
two relatively simple questions
I am using R on windows XP and I really tried to find the answers to below but I haven't been succesful. the two questions are : 1) is there way of seeing what packages you have loaded ( search() gives you the automatically included ones ). 2) is there a way of uninstalling packages that you have added by accident. i found the command R CMD REMOVE "package name" and tried it.
2017 Oct 20
0
What exactly is an dgCMatrix-class. There are so many attributes.
Subsetting using [] vs. head(), gives different results. R code: > head(train$data, 5) [1] 0 0 1 0 0 > train$data[1:5, 1:5] 5 x 5 sparse Matrix of class "dgCMatrix" cap-shape=bell cap-shape=conical cap-shape=convex [1,] . . 1 [2,] . . 1 [3,] 1 .
2017 Oct 20
4
What exactly is an dgCMatrix-class. There are so many attributes.
Thank you for your responses. I guess I don't feel alone. I don't find the documentation go into any detail. I also find it surprising that, > object.size(train$data) 1730904 bytes > object.size(as.matrix(train$data)) 6575016 bytes the dgCMatrix actually takes less memory, though it *looks* like the opposite. Cheers! On Fri, Oct 20, 2017 at 3:22 PM, David Winsemius