similar to: AutomaticTRUE/FALSE Matrix Generation

Hello,   I tried to use a variable to refer colname, but I got error, could anyone give me advice?   >df=data.frame(cbind(AB=1:3,AC=3:5)) > df$AC [1] 3 4 5 > df$paste("A","C",sep="") Error: attempt to apply non-function thanks Jian   [[alternative HTML version deleted]]

I have written a function to emulate minitab's QQ plotting output (with SW test and AD test results on the graph): mtab.norm<-function(x) { library(nortest) library(lattice) x<-as.numeric(x) x<-as.vector(x) plot.ht<-4.6 plot.wd<-4.6 pt.ht=plot.ht/5 txt.sz<-(plot.ht/7.5) X11(width=plot.wd, height=plot.ht, bg='gray96') qqplot(x, pch=16, cex=pt.ht,

Hi Philip, You've probably realized by now that R doesn't like column names that start with a number. If you try to access an R-dataframe column named 2B or 3B with the familiar "$" notation, you'll get an error: > library(DBI) > library(RSQLite) > con2 <- dbConnect(SQLite(), "~/R_Dir/lahmansbaseballdb.sqlite") > Hack12Batting <-

I'm having an sorting problem in dotchart. I want to change the order of the BA in groups to AB, but I haven't found any solution yet. What should I do? And what if I want to change the groups order as well? At the bottom from Conrol up to 10 mg/L on the top. Thank you! x = c(39, 23, 23, 35, 30, 26, 30, 30, 29, 29, 26, 29, 34, 33) y = c("Control", "DMSO", "0,1

This is really a feature of SQL, not R. SQL requires that you double quote column names that start with numbers, include spaces, etc., or that are SQL key words. E.g., > d <- data.frame(Order=c("sit","stay","heel"), Where=c("here","there","there"), From=c("me","me","you")) >

Si, ese es el problema, lo que implica por ejemplo que no pueda ordenar el data.frame por grados. Javier Rubén Marcuzzi De: JCMld Enviado: miércoles, 1 de junio de 2016 4:28 Para: 'Javier Marcuzzi'; R-help-es en r-project.org Asunto: RE: [R-es] data.frame colname igraph Creo que la conversión a data.frame está devolviendo un data frame con una sola columna llamada

Hello all, I am going slightly mad trying to create a table for running co-correspondence analysis. What I have is seed bank and vegetation data, and my aim is to see if the vegetation found in a site (containing several seed bank samples) can predict the composition of a seed bank sample within that site. So for this I need two tables with matching rows. I have created an empty matrix,

Hello, I am having a problem with write.fwf in Windows. I wrote a code to ingest a number of text files with weather data in them, process them, and then output a text file with two parts: 1) a set of column names, 2) the processed data table. I wrote and tested the program on my Mac, and it worked fine. However, on the windows machine, where I intend the work to be done, when I run the

Hi! All, I have 2 correlation matrices of 4000x4000 both with same row names and column names say cor1 and cor2. I have extracted some information from 1st matrix cor1 which is something like this: rowname colname cor1_value a b 0.8 b a 0.8 c f 0.62 d k 0.59 - - -- -

Hi all, Apologies if this has been raised before ... R's tapply is very fast, but if X has names in this example, there seems to be a huge slow down: under 1 second compared to 151 seconds. The following timings are repeatable and are timed properly on a single user machine : > X = 1:100000 > names(X) = X > system.time(fast<<-tapply(as.vector(X), rep(1:10000,each=10), mean))

hi there say that i have this table >x<-table(adoc, oarb) >x oarb 0 1 adoc ab 1 0 am 5 1 ba 14 1 cc 271 3 ch 87 2 dz 362 6 fl 7 0 fs 84 2 is there an easy way to get the row names or row

Hi, folks, test=matrix(rep(letters[1:3],6),nrow=6,byrow=T) test[2,]=letters[5:7] test[4,]=c('e','f','i') test[1,3]='i' colnames(test)=c('leave','arrive','line') The code will generate a sample dataset. I have thousands rows of data. For the same 'leave' and 'arrive', how can I get the sum of square of percentages of

hi all iam newbee, i ve install shorewall 1.3.11 on mandrake 8.2 , i ve eth0 with local ip 192.168.40.40/21 and eth1 203.128.65.22/255.255.255.248 the problem is when my client try connect to internet the page cannot be displayed and while client try ping to internet address reply from 192.168.40.40 destination net unreachable why it can happend ? anyone can give me a hand

Hi all, I'm a newbee using R. I need to do a classification tree using the rpart package. Basically I have a set of birds of known sex and several morphological measurements and we want to predict the sex using the morphology. I read my csv file and it shows up in R no problem, looks fine but when I execute the following rpart command

I am a newbee to asterisk. I recently installed asterisk@home. Everything went well and my set up is running fine with soft phones, such as kphone and XtenLite. Now, i want to be able to connect my analogue phones to my asterisk pbx box and use it as if i make a regular Phone call (I do have my PSTN gateway account with broadvoice.com and already configured to route through it). I do NOT have a

Newbee here.... I would like to play around with Asterisk a little. First, I need to prepare a server with FreeBSD. It's a PII 433mHz/256mb box. Good enough? Then install Asterisk. I have a broadband (cable) internet presence. Could I do anything with this connection and Asterisk? Thanks, Rayasterisk --------------------------------- Do you Yahoo!? Read only the mail you want -

Dear Folks-- I'm trying to make a function that takes the columns I select from a data frame and then uses a for loop to print some information about each one, starting with the column name. I succeed in returning the column name, but nothing else I have tried using the variable colName, containing the name of the column, to refer to the column itself has worked. Below I show my

Hi I would like to shorten mod1 <- nls(ColName2 ~ ColName1, data = table, ...) mod2 <- nls(ColName3 ~ ColName1, data = table, ...) mod3 <- nls(ColName4 ~ ColName1, data = table, ...) ... is there something like cols = c(ColName2,ColName3,ColName4,...) for i in ... mod[i-1] <- nls(ColName[i] ~ ColName1, data = table, ...) I am looking forward to help Christof

Hi, This is a beginner R question. I have a 4x4 matrix named 'lookup' with the following values: 1 2 3 4 1 0.000000 2.828427 5.656854 8.485281 2 2.828427 0.000000 2.828427 5.656854 3 5.656854 2.828427 0.000000 2.828427 4 8.485281 5.656854 2.828427 0.000000 I then create a new empty matrix named 'dd' with specfic row and col names :

(Using R1.5.0 patched for Windows) Subscripting rows of data.frame only sometimes does what the documentation says: > When `[.data.frame' is used for subsetting rows of a `data.frame', > it returns a dataframe with unique row names, using `make.names( * > , unique = TRUE)', see the `swiss' example below. Row names seem to be modified in this way only when