similar to: Variables from a Dataframe

 Hello everyone, I'm trying to change the name variables of a big dataset. Here's more than 300 variables. The point is that I have to match it with another dataset that have same variables, but in lowercase, the I can use rbind and do my work. Is there any function for changing uppercase or lowercase variables? Thank you in advance! José [[alternative HTML version deleted]]

Hola everyone, I'm doing an analisys about abundance of a planctonic specie in Robinson Crusoe Islan and I am having a hard time just adding the superscripts and the 100 (one hundred) in the measure of abundance. Perhaps this is so basic to you, but I need to put the real unit of measure. Individuals / 100 cubic meters. I have been looking in websites and R-list and there is not any

Hello Everyone, I'm doing a Classification trees with categorical explanatory variables using library rpart and I would like to do a prediction for some data imputs. I don't know where's a function or how can I do it?. Is there someone can help ?? ¿. Here's the code that I'm using. library(rpart) fit <- rpart(Kyphosis ~ Age + Number + Start, data=kyphosis) plot(fit)

Dear R users.   I'm trying to know how to create a function. I have developed a big code that use a file and makes many process and then creates a table that is exported as txt. The point is to make something like a function.  I need to make it easy for others, so they can run it. This has a particular name? I will be very gratefull and placed if any of you can provide some lights.

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Hello everyone, I know this is very basic question for you people. I'm working with mani diferent tables, but everyone has the same variables. (V1, V2, V3). The only think that I need to do is to put together this tables. In other words, creating just one big table with all the cases showed in the smaller tables. For example: tabla1<-data.frame(v1,v2,v3) tabla2<-data.frame(v1,v2,v3)

Hi everyone, I'm trying to reduce the font size in the Y  exe in this plot: http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=150 Anyone knows how to do it? I have checked the argument lab.cex and cex, but any of these works! if you want to check us this code: ### read the data d <- read.csv( file( "http://addictedtor.free.fr/graphiques/data/150/data.txt" ) )

Hello everyone,  There's something really important about climate change and how many institutions around the globe are looking for softwares solutions in order to achieve they (and everyone) needs to improve life conditions in all the planet. Currently, they're many comercial softwares working with this important topic named as: "Life Cycle Assesment", monitoring carbon emition,

Hello R-List, I have a question about recoding from a date time object.  I have tried using as.POSIXct objects and Chron Objects, but I can get the what I want. I need to create a new variable from a date-time object, adding "Office Time" for those events that happens between 08:00:00 to 18:00:00 and "Out of Office" all the others, but not including weekends. I have created a

Hola amigos de R en Español, Estoy eliguiendo unas variables desde una dataframe, pero cuando creo un objeto nuevo ( con cbind) las nueva tabla (que es una matriz) se pierden los nombres de los factores. Aparecen numeros (1,2,3..). Alguien me puede decir si existe un comando para extraer las variables a un nuevo dataframe, pero sin cambiar el nombre, ni la codificacion ? Gracias, José

Estimados, A todos quienes estan insterados y estan en Stgo de Chile les tengo una muy buena noticia. Desde hace ya algunas semanas, nos hemos sentado a la mesa con Alex (Epidemiologo) a discutir la necesidad de desarrollar un curso de R para principiantes. No solo porque es necesario unirse en torno a un projecto como es el R, sino que es una oportunidad para muchos cientificos (como

Hello everyone,  I'm working in a project to create an special analysis about visualization in some animals and its behaviour, through checking eye movement. The point is this is very important to get data from the image as a resume of what this animal sees. I think an RGB histogram like photoshop does, but I need to get the data from this histogram analysis and I was wondering about using R

Hi everyone, I'm studying the manual name: Analysis of Epidemiological Data Using R and Epicalc, maked by: Virasakdi Chongsuvivatwong and Edward McNeil. And I can't find the data base that they use in some examples, this are the names: Chapter7.Rdata,Chapter8.Rdata,Chapter9.Rdata Somebody can tell me how can I have this files? Thk! Jos? O__ ---- Jos? Bustos M. c/ /'_ ---

Hi all..RCounters! I´m working with standarized time series, and i need make a counter of consecutives positves numbers to make a cumulative experimental funtion. I have x: the time series (0,1) and y: my counter, i have this for step. What is wrong?.. any can help me please! x<-rbinom(15,1,.3) y<-NULL;s<-0 for (i in 1: length (x)) {if (x[i]>0) {s<-s+x[i] s=0}

Hello everyone, I would like to create a new R mirror en Chile and I would be very placed if any of you who are familiar doing it can help us. We are looking for manuals and materials need it. Thank you in advance, José Bustos Data Scientist at www.aespro.cl [[alternative HTML version deleted]]

Hi everyone, I'm working with the Epical library, specicatly using the power test in proportions. I think this test is not working like in the book: Biostatistical Analysis (4th Edition): Jerrold H. Zar In the example 23.25. (I attach this Pic) It's not the same answer. Using the follow command don't give the same answer. library(epicalc) power.for.2p(0.75, 0.50, 50, 45, alpha =

Hi everyone, We are looking for some data sets working with relative risk mortality. so, someone know where can I find the data.mgus dataset and the data.mgus? Using 1384 records from Minnesota. This data set are used in the : Robert A. Kyle, Terry M. Therneau, S. Vincent Rajkumar, Janice R. Offord, Dirk R. Larson, Matthew F. Plevak, and L. Joseph Melton III. A long-term study of prognosis in

I'm trying to use a data base from SPSS and get all data representing the true data. I would like to use a variable as expansion data. In our data base we have the variable with the factor expansion, but we have not idea how to set it in R. Any idea? Thanks in advance! José [[alternative HTML version deleted]]

Hi everyone, Im very new with R and I would like to change the size text (names) in the ylab in a dotplot. I have checked many webpages and R sites,  but I have not found any help. This is the same structure of the plot in R graph Gallery: http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=150 thanks in thanks is advance José Mi code is this: ### setup the key k <- simpleKey( c(

How I can take out my name from this list? Fernanda Melo Carneiro contato: (62) 3521-1480 e 8121-7374www.ecoevol.ufg.br Laboratório de Ecologia Teórica e Síntese (UFG)   [[alternative HTML version deleted]]