similar to: LDA: variables seems to be constant

----- Original Message ----- From: Robin Gruna To: R-help@lists.R-project.org Sent: Sunday, June 20, 2004 5:42 PM Subject: Evaluating strings as variables Hello, I have the following problem: I have a list as follows, > values <- list(red = 1, yellow = 2, blue = 3) > values $red [1] 1 $yellow [1] 2 $blue [1] 3 There is also a vector containing the diffrent "colors" as

Hi everyone, I have the following problem: I want to perform a LDA with the function lda(). My data object mat.data is a matrix with dimensions > dim(mat.data) [1] 1228 44 and my grouping vector grp has length 1228: > length(grp) [1] 1228 Every time I call lda(), the following error message occurs: > lda(mat.data,grp) Error in lda.default(x, grouping, ...) : length of dimnames [2]

Hi, let's see, if someone can help my with this one: I have the string as follows: > str<-("one","two","three") Now I want to concatenate the items to one string, seperateted by space or something else, >str >"one, two, three" If possible without a loop. My actual goal ist to create string like >str.names >"female = names1, male

Hi, I'm a R newbie and I have a supervised 2-class classification problem. To find out the best representation of my data (dim = 45). I want to perform LDA und QDA on the diffrent data representations to find out, which is best to discriminate the 2 sets. For LDA there exists a method plot.lda shows (in the 2 class case) a histogramm of the data, projected onto the linear discriminants (pleas

Dear R-help list, two issues regarding lda. 1) I'm puzzled by the fact that lda's in-build cross-validation gives results different from the manual cross-validation routine that I run (of course mine may be wrong, but I don't think so). See here: library(MASS) set.seed(12345) n <- 50 p <- 10 # or p<- 200 testdata <- matrix(ncol=p,nrow=n) for (i in 1:p) testdata[,i]

Dear R-help list, apparently lda from the MASS package can be used in situations with collinear variables. It only produces a warning then but at least it defines a classification rule and produces results. However, I can't find on the help page how exactly it does this. I have a suspicion (it may look at the hyperplane containing the class means, using some kind of default/trivial

When I import a simple dataset, run LDA, and then try to use the model to forecast out of sample data, I get a forecast for the training set not the out of sample set. Others have posted this question, but I do not see the answers to their posts. Here is some sample data: Date Names v1 v2 v3 c1 1/31/2009 Name1 0.714472361 0.902552278 0.783353694 a 1/31/2009 Name2 0.512158919 0.770451596

Hi R experts, I'm attempting to run Linear Discriminant Analysis using the lda function in the MASS package. I've got around 50 predictor variables and one response variable. My response variable has 5 numeric categories that represent different clusters of fish abundance data (clusters were developed using Bray-Curtis and NMDS), and my predictor variables are environmental variables that

Hi list, it's been 2 months now since my initial posting (s.b.). I wonder if I could get at least a "still working on it" statement from the devs or something like that? On 22.02.2018 16:42, Patrick Cernko wrote: > Hi list, > > this question was already posted a few years ago > (https://www.dovecot.org/list/dovecot/2014-November/098585.html). I > already asked the

Hi I have a data.frame with a grouping variable having the levels C, mild AD, mod AD, O and S since I want to compute a lda only for the two groups 'C' and 'mod AD' I call lda with data=subset(mydata.pca,GROUP == 'mod AD' | GROUP == 'C') my.lda <- lda(GROUP ~ Comp.1 + Comp.2 + Comp.3 + Comp.4+ Comp.5 + Comp.6 + Comp.7 + Comp.8 ,

Hai marco, Well, this is a hard one to answer for me. I'll give it a try. ;-) > -----Oorspronkelijk bericht----- > Van: samba [mailto:samba-bounces at lists.samba.org] Namens > Marco Gaiarin via samba > Verzonden: vrijdag 2 augustus 2019 15:28 > Aan: samba at lists.samba.org > Onderwerp: Re: [Samba] winbind seems to hang when the DC goes > down instead of switching

Hello, I'm attempting to configure the Dovecot Antispam plug-in on Ubuntu 12.04 LTS with Dovecot 2.0.19. Everything seems to be in order with one considerable exception: when my pipe script (a simple Bash shell script) calls the dovecot-lda executable, absolutely nothing seems to result. If I copy/paste the exact same command into the terminal, the mail is delivered to the target mailbox,

Hi all, I'm working with some data: 54 variables and a column of classes, each observation as one of a possible seven different classes: > var.can3<-lda(x=dados[,c(1:28,30:54)],grouping=dados[,55],CV=TRUE) Warning message: In lda.default(x, grouping, ...) : variables are collinear > summary(var.can3) Length Class Mode class 30000 factor numeric ### why?? I

Saving lda.default as text files from within gui="none" and from within gui="gnome" and comparing afterwards with diff, I get: alobo at humboldt:> diff lda.default.gnome.txt lda.default.nognome.txt 1c1 < function (x, grouping, prior = proportions, tol = 1, method = c("moment", --- > function (x, grouping, prior = proportions, tol = 1e-04, method =

This question appears to have been asked previously, but not answered. the last response I can find to this previous thread is here: http://tolstoy.newcastle.edu.au/R/help/04/07/0126.html. The asnwer was to provide debugging info, not an answer. So the problem is that I'm trying to use lda on my dataset. You can download my data here: http://northstar-www.dartmouth.edu/~jgilbert/nolda, I used

Dear R Help team, I'm having some problems running a discriminant analysis (MASS:lda) over my data, i have a grouping variable coming from a previous cluster analysis and several discriminators (78 actually). I'm trying to run lda using column index as independent variable in the formula like it's done in the help page for ?formula:

Hi list, this question was already posted a few years ago (https://www.dovecot.org/list/dovecot/2014-November/098585.html). I already asked the original queriest and he told me, that he never got an solution or workaround but it was not important enough for him. When using replication in conjunction with sieve vacations, the .dovecot.lda-dupes file is not synced with the other server. So when

I'm working on a rather interesting consulting problem with a client. A number of physical variables are measured on a number of cricket bowlers in the performance of a delivery. An example variable might be a directional component of angular momentum for a particular joint measured at a large number (101) of equally spaced timepoints. Each bowler generates a (fairly smooth) curve for

Hi all, I am using the lda function from the MASS library to measure the discriminance of different variables with respect to different grouping variables by using lda( RESULTVARS[, 1:750] , GROUPVAR , tol=0 ) where RESULTVARS contains some 750 different variables. Occasionally there is a variable within RESULTVARS that has the same values for all values of GROUPVAR, ie no variance so

Hi I have two date select options in a form, when I try and grab these values using somthing like @pMax = params[:max] I get this in the varibale name max(1i)2006max(2i)6max(3i)5 which has the correct data, jsut with added things like max(1i) Whats the best way of grabbbing this data into a variable without the extra titles? Scott -- Posted via http://www.ruby-forum.com/.