similar to: Concatenate a Variable

Hello! May you help me? I'm trying to do a contingency table using this > data(iris) > library(rpart) > modelo <- rpart(Species ~., iris) > prev <- predict(modelo, iris) Finally the contingency table > table(iris$Species, prev) But an error occurs: Error in table(iris$Species, prev) : all arguments must have the same length And I do not understand why, may you

Good Morning! May you help me? I need to understand the function predict. I need to understand the algorithm implemented, the calculations associated. Where can I find this information? Thank You!

Hello! I need some help, because I don't know how this error means: Error: variables ?Output1?, ?Output2?, ?Output3?, ?Output4?, ?Output5? were specified with different types from the fit Execution halted Can you help me? Thank You

Hello, I' m trying to change the formula in the rpart function. The format of a general formula is Answer ~ expression, where Answer is the dependent variable and expression is set of terms containing the independent variables and separated by operators. I want the response of the formula is more than one dependent variable. It is possible?

How can I join two lists? I have q1 and q2 and I want to merge them. I have tried to use the comand merge, but not work. Any solutions? Thanks! > q1 $Input1 7.84615384615385 0.5 $Input2 8.92307692307692 -3.2 $Input3 4.53846153846154 -5 > q2 $Input1 7.84615384615385 2 $Input2 8.92307692307692 -0.3125 $Input3

Dear list! I would like to calculate "chisq.test" on simple data set with 70 observations, but the output is ''Warning message:'' Warning message: In chisq.test(tabele) : Chi-squared approximation may be incorrect Here is an example:         tabele <- matrix(c(11, 3, 3, 18, 3, 6, 5, 21), ncol = 4, byrow = TRUE)         dimnames(tabela) <- list(        

Hello, How can I do a cross validation in R? Thank You!

I need of helps for do backup of a server windows2000(english). In the files accentuated, presents to following message: ERRDOS - ERRbadfile (File not found.) opening remote file \f\adm\Arquivos diversos e tempor rios\Tabela Master de Importaao.xls (\f\adm\Arquivos diversos e temporarios\ They are more of 60 pages with this message. When I rename the name of the file to without accent, it

Hello everybody, i'm trying to run a lme but am having a problem. My model have many response variables and when i run the anova, the number of interactions (up to six) is great and the p-values of all variables not appear. I wanted to know if i could to control the number of interactions of the model, or if this method is the most advisable for so many variables. Thanks in advance!

u<-c(0.1,0.2,0.3) v<-c(0.2,0.3,0.5) outer1<-outer(u,u,">=") outer2<-outer(v,v,">=") m<-nrow(outer1) j<-nrow(outer2) zz<-lapply(1:m, function(m) as.numeric(outer1[m,])) tt<-lapply(1:m, function(m) as.numeric(outer2[m,])) zz[[1]]*tt[[3]], e.g., is possible, but I want every products between two lists. Is there a way to do that? -- View this

I'm trying to create figures in PDF that use the 'gray' colormodel instead of the default 'RGB' model, by requirements of a publisher. My problem has to do with the fact that I'm not being able to get gray colors with this option on the pdf() driver. Here is a small example for problem replication: > R.version _ platform

I need to compare a column in TableA to a column in TableB and then select 3 columns from TableA for all the records in TableA that don''t exist in TableB. TableA and TableB are different but do have one field in common that i am comparing. The tables are not related in anyway. right now I have a find_by_sql query located in a model that looks like this: def self.absent_charges

Dear Sirs What is the best aproximation to the standardized normal distribution: necessidade = c("sem necessidade","com necessidade") tipo =c("CE-1", "CE-2", "CE-3") dados=c(20,34,44,69,9,3) Tabela =cbind(expand.grid(list(Necessidade=necessidade, Tipo=tipo)), count=dados) Tabela.array=tapply(Tabela$count, Tabela[,1:2], sum) ni =

I have a legacy db with the following simplified structure: Table-A: type_key, code_key, name, ... # PKs are type_key and code_key, there is no id col and I cannot alter this db Table-B: # each row has only the code as a foreign_key, the type_key is hard-coded to "FOOKEY" an_id, code, ... Models: class TableB < AR::Base set_table_name ''table_b''

I''m trying to be a good rails developer and fix DRY violations as i find them. However, i''m trying to fix this one, i cant seem to get it to work. I have two tables A and B that have a one-to-one relationship. Table B belongs_to Table A. Table A has_one Table B. I''m creating instances of Table A in different places, depending on the controller. However, for each

Good afternoon, gentlemen! After several days studying and researching on categorical data (various forums with answers from the owner of the library - all incipient) how to interpret the output the function MCMCglmm, come to enlist the help of you, if someone has already worked with MCMCglmm function in the case of variables ordinal dependent. I've read and reread all the pdf's of the

Anyone can help? I continue without access from server: /etc/cron.daily/freshclam: ERROR: No servers could be reached. Giving up ERROR: No servers could be reached. Giving up ERROR: No servers could be reached. Giving up ERROR: No servers could be reached. Giving up ERROR: No servers could be reached. Giving up ERROR: No servers could be reached. Giving up ERROR: Update failed. Your network may

Hi, I have a client connected to the ''net through 3 ISP''s. Have set up a Linux box to do routing and load sharing for the 3 connections. A fourth interface is connected to the LAN with private IP addresses. Am using iptables to SNAT traffic to the appropriate IP depending on the interface the packet gets routed onto. The setup looks something like this: Interface IP

Hello R masters, I have sent this same message to other lists and none so far could give some light. I was trying to use odfWeave to generate a report from R and Im getting an error that I think is related to latin characters. I looked around and did find some stuff related to this problem about Sweave http://labmoluscos.wordpress.com/2010/02/18/sweave-latex-character-encoding/ but did not find a

Hi, I have a dovecot installation with a strange problem: all the mails stays in storage after deleted from users mailbox. If user logon after the mails are deleted, they don't receive them any more, but the m.## files aren?t deleted. This happens with pop3 (default for this installation) and/or imap. The dovecot is installed along postfix with mysql and multi-domains support Here's the