search for: factorize

Displaying 20 results from an estimated 8162 matches for "factorize".

2011 Nov 08
why NA coefficients
Hi, I am trying to run ANOVA with an interaction term on 2 factors (treat has 7 levels, group has 2 levels). I found the coefficient for the last interaction term is always 0, see attached dataset and the code below: > test<-read.table("test.txt",sep='\t',header=T,row.names=NULL) > lm(y~factor(treat)*factor(group),test) Call: lm(formula = y ~ factor(treat) *
2010 Jan 13
need a clarification on logistic regression
hello I need a clarification. in logistic regression, saturated model having all combinations and interactions of variables should be constructed in this way ? : > rsat2=glm(cbind(landp,landa) ~ as.factor(rlito)*as.factor(rslp)*as.factor(rasp)*as.factor(rplc)*as.factor(rwi),family= binomial(link=logit),data=rdf46) then using stepAIC to eliminate some models having high AIC values. >
2016 Apr 19
Indicator Species analysis; trouble with multipatt
Hi Ansely, As Jim points out we really need some sample data to go with the code. Have a look at ?dput which is the best way to supply sample data here or have a look at and/or for some general suggestions on asking questions
2016 Apr 18
Indicator Species analysis; trouble with multipatt
Hello, *Error in tx %*% comb : non-conformable arguments* Suggestions greatly appreciated. I am a beginner and this is my first time posting. I would like to get the summary for indicator species analysis, using package indicspecies with multipatt. I am getting errors, I believe, do to my data organization. After reorganizing and reorganizing, nothing has helped. > data<-
2007 Jun 05
Refactor all factors in a data frame
Hi all, Assume I have a data frame with numerical and factor variables that I got through merging various other data frames and subsetting the resulting data frame afterwards. The number levels of the factors seem to be the same as in the original data frames, probably because subset() calls [.factor without drop = TRUE (that's what I gather from scanning the mailing lists). I wonder if
2008 Sep 02
Error in .local(object, ...) : test vector does not match model !
I am getting a really strange error when I am using predict on an ksvm model. The error is "Error in .local(object, ...) : test vector does not match model !". I do understand that this happens when the test vectors do not match the Model. But in this case it is not so. I am attaching a portion of both the test data used for prediction and the data used to build the model. I could
2006 Feb 07
post-hoc comparisons following glmm
Dear R community, I performed a generalized linear mixed model using glmmPQL (MASS library) to analyse my data i.e : y is the response with a poisson distribution, t and Trait are the independent variables which are continuous and categorical (3 categories C, M and F) respectively, ind is the random variable. mydata<-glmmPQL(y~t+Trait,random=~1|ind,family=poisson,data=tab) Do you think it
2013 Jan 31
use name (not values!) of a dataframe inside a funktion
Dear Listers, can anyone help me, please. Since several days i try to figure out, how to assign values, vectors, functions etc to variables with dynamically generated names inside of functions. Sometimes I succeed, but the success is rather arbitrary, it seems. up to now i don't fully understand, why things like get, assign, <<- etc do sometimes work, and sometimes not. here's one
2015 Apr 30
predict nlme
Estimado Oliver Nuñez Envío un ejemplo reproducible. Javier Marcuzzi # de donde tomo datos, y tiene el modelo (en el pdf) library(MCMCglmm) # librería con las funciónes que voy a usar library(nlme) datos0<-ChickWeight # creo algunos datos que agrego a los origonales Factor<-as.numeric(datos0$Chick) Factor[Factor > 0 & Factor <= 10] <- 'A' Factor[Factor > 10
2005 Feb 13
corrupt data frame: columns will be truncated or padded with NAs in:, digits = digits)
Hello R users! I have written one function (look at the end), which will ease my work with analysis of data in another programme, for which I need sometimes a special data structure. However I encountered several problems with a created data frame. --------------------------------------------------------------- The data frame (produced from the example at the end) looks like the way I want
2008 Jul 13
initialize a factor vector
What is the least surprising way of initializing a factor with predefined levels and with length 0? as.factor(c("eins", "zwei", "drei"))[FALSE] does the job but looks a bit weird. -- Johannes H?sing There is something fascinating about science. One gets such wholesale returns of conjecture mailto:johannes at
2011 Nov 10
Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 4L, : max not meaningful for factors
Hello, Beginner, sorry if this is wasting anyone's time, but have been working on this for a couple of days now, think it should have take a few hours! The Problem: Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 4L, : max not meaningful for factors I have tried to re-arrange and check formula. I am working in SIAR, and cannot get model1 to run because of the error
2007 Dec 05
converting factors to dummy variables
Hi all - I'm trying to find a way to create dummy variables from factors in a regression. I have been using biglm along the lines of ff <- log(Price) ~ factor(Colour):factor(Store) + factor(DummyVar):factor(Colour):factor(Store) lm1 <- biglm(ff, data=my.dataset) but because there are lots of colours (>100) and lots of stores (>250), I run it to memory problems. Now, not every
2010 Sep 21
Prime Factorization
Hi everyone, I have a very quick question: Is there a ready-made function in R or any R packages to find the prime factorization of an integer? -- View this message in context: Sent from the R help mailing list archive at
2018 Apr 18
How to replace numeric value in the column contains Text (Factor)?
Hi R user, Would you mind to help me on how I can change a value in a specific column and row in a big table? but the column of the table is a factor (not numeric). Here is an example. I want to change dat[4:5,3]<-"20" but it generated NA> do you have any suggestions for me? dat<-structure(list(Sites = structure(1:5, .Label = c("Site1", "Site2",
2011 May 24
Beginner Question: List value without Levels
Hey folks, I'm new to the R Project so I'm facing a great problem. I've read a file into R: >myVal I V L F C M A G T W S Y P H Q D N E K R 1 4,5 4,2 3,8 2,8 2,5 1,9 1,8 -0,4 -0,7 -0,9 -0,8 -1,3 -1,6 -3,2 -3,5 -3,5 -3,5 -3,5 -3,9 -4,5 > mode(myVal) [1] list Now I want to multiplicate each of this values with this one:
2009 Nov 08
ordered factor and unordered factor
I don't understand under what situation ordered factor rather than unordered factor should be used. Could somebody give me some examples? What are the implications of order vs. unordered factors? Could somebody recommend a textbook to me?
2017 Jun 26
How to code the factor for ANOVA
Hi there, I have a experimental design related question. I have done a experiment with 3 factors. The design matrix is similar to: > data.frame(Factor.1 = rep(rep(0:2, each = 3),3), Factor.2 = rep(c("U","S","N"), 9), Factor.3 = rep(0:2, each = 9)) Factor.1 Factor.2 Factor.3 1 0 U 0 2 0 S 0 3 0 N
2012 May 04
Breaking up a Row in R (transpose)
I have the following: Time A1 A1 B1 B1 C1 C2 x y x y x y 0 5 6 6 7 7 9 1 3 4 4 3 9 9 2 5 2 6 4 7 4 I want to change it to the following: 0 1 2 x y x y x y A1 5 6 3 4 5 2 B1
2008 Jul 19
replicate matrix blocks different numbers of times into new matrix
Hi, I am trying to replicate blocks of a matrix (defined by factors) into another matrix, but an unequal, consecutive number of times for each factor. I need to find an elegant and fast way to do this, so loops will not work. An example of what I am trying to do is the following: # the data - first column entries are both data and the two factors x<-matrix(c(1,2,3,4),2,2) > x [,1]