[R] ordered logistic regression

Hi there, i tried to run an ordered logistic regression with polr. so far it worked after i turned my data into factors. but here´s my problem: my output is like this: Call: polr(formula = factor(fulltest[, 1]) ~ factor(fulltest[, 2]) + factor(fulltest[, 10]), method = logistic)

[R] which syntax to use for ordered logit

Hi everybody, i am like to do a ordered logistic model, but cant figure out which syntax / library fits best. i´ve answer possibilites in a matrix (-1 0 1 2 3), these are saved as factors. i guess i need something pretty basic. i tried VGAM, polr but received not what i wanted. Whicht

[R] factor analysis

Hi there, i´ve trouble understanding the factanal output of R. i am running a a FA on a dataset with 10 variables. i plotted eigenvalues to finde out how many factors to try. i think the elbow is @ 3 factors. here are my eigenvalues: 2.6372766 1.5137754 1.0188919 0.8986154 0.8327583 0.7187473

Re: [R] dendrogram - got it , just need to label :)

thx very much! that helps to give those nodes somewhat dynamic names, so a legend to explain those numbers would be a solution, i´ll think about. Anyway, is it possible to name the nodes by hand, for example call node1 myname1, node2 something else and so on ? best -m. P.S.: Are there

[R] dendrogram again

Hi all, ok, i know i can cut a dendrogram, which i did. all i get is three objects that a dendrograms itself. for example: myd$upper, myd$lower[[1]], myd$lower[[2]] and so on. of course i can plot them seperately now. but the lower parts still have hundreds of branches. i´ll need a 30

Re: [R] dendrogram again

Though your example helped, i am still trying to get exactly what i want. Here´s how i get my dendrogram. and my example... (using ward instead of average, doesnt make any difference for my case - i believe) hc=hclust(dist(mymatrix),average) hcd=as.dendrogram(hc) plot(hcd) the major problem

[R] dendrogram - got it , just need to label :)

Hi all, Hi Gavin, thx for your help i finally found out what i want to do and how to fix it. just needed to get some more level my cut level was too small... two question remain... a) can i somehow scale the twigs after cutting ? b) how can i label the nodes and how to label which one... thx

[R] dendrogram / clusteranalysis plotting

Dear all, i performed a clusteranalysis - which worked so far... i plotted the dendrogram and sooo many branches, a rough sketch would be enough ;) i tried max.levels therefore which worked, but not for the plot... i used the following plot(hcd,nodePar =nP, str(hcd,max.level=1)) the output

[R] how can i group branches of a dendrogram

Hi all, how can i group branches of a dendrogram ? thx in advance __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented,

[R] hwo can i get a vector that...

dear all, how can i get a vector that shows the number of the column of matrix that contains the maximum of the row ?? can´t believe in need a loop for this... i have a 100 x 3 matrix and want to get a 100 x 1 vector with values 1,2,3 . there must be a simple solution. i just cannot find

Re: [R] hwo can i get a vector that...

dear all, how can i get a vector that shows the number of the column of matrix that contains the maximum of the row ?? can´t believe in need a loop for this... i have a 100 x 3 matrix and want to get a 100 x 1 vector with values 1,2,3 . there must be a simple solution. i just

[R] apply ? function doesnt create object

hello, i have written a function to extract certain lines from a matrix. the result is a matrix with 6 cols, named dynamically according to the functions arguments. the problem is now, that i'm not able to return the resultmatrix for further use. the object is not being created. example

[R] need indexing help again

Dear all, i have a problem which deals with indexing again, i guess. I am a beginner and though i read the S Poetry stuff it is not that easy for me to use the examples for my problems, maybe all this needs some practice... Here´s the question. As i want to perform a factor analysis i need

[R] count the # of appearances...

Hi there, is there a possibility to count the number of appearances of an element in a vector ? i mean of any given element.. deliver all elements which are exactly xtimes in this vector ? thx in advance !! __ R-help@stat.math.ethz.ch mailing list

[R] problem with throwing lines out of matrix

Dear all, again i have a problem with special case of dropping lines out of a matrix. i tried the following, where throwout is a vector of length 18 with simple id values that should be compared to any for (k in 1:length(throwout)) { mymatrix=matrix(mymatrix[-(forfact[k]),],ncol=4)

[R] Multiple conditional without if

Dear all, i am stuck with a syntax problem. i have a matrix which has about 500 rows and 6 columns. now i want to kick some data out. i want create a new matrix which is basically the old one except for all entries which have a 4 in the 5 column AND a 1 in the 6th column. i tried the following

Re: [R] vector problem

it is not good practice to 'rbind' an object in a loop -- it is much better to create the matrix with its full size and then subscript into it. Patrick Burns [EMAIL PROTECTED] +44 (0)20 8525 0696 http://www.burns-stat.com (home of S Poetry and A Guide for the Unwilling S User) bunny

[R] vector problem

Hello out there, i am not yet that experienced and trying to my best on a real survey. but i am stuck with a little matrix / vector problem. my vector of answers could have a length of 3 or only one. i want to rbind all the answers into one matrix. (one vector for each participant) answers

[R] function names in a vector used by for (){} character problem ?

Hi there, i´m have vector of kernels. just like: kernels = c('gauss','epan','rectangular') i know there are density.default$kernels, but thats not my question here. my own kernel functions are running and working. my problem is the following is not working: dev.off() par(mfrow=c(3,3))