similar to: Configurar RPostgreSQL en win XP

Hola! Tengo que hacer una curva ROC com unos datos que obtuve de hacer una macro de excel y aplicar unas reglas, y basicamente tengo que a partir de la variacion del tiempo y la velocidad del barco obtengo diferentes porcentajes de true positives (TP) y false positives (FP) y con eso deberia de construir una curva ROC. Dada mi ignorância en este tema, no se muy bien por donde empezar , estuve

Hola a todos, Tengo un equipo con windows 7 Home Premium 64 bits (8mb de RAM) y me gustaría saber como podría obtener el máximo rendimiento en R. He visto que hay dos o tres comandos: memory.size(max=TRUE) memory.limit = ... El caso es que si uso memory.size(max=TRUE) el maximo que me imprime por pantalla es bastante mayor en un equipo que tengo con windows xp a 32 bits que en el nuevo equipo

Hoy de casualidad buscando sobre otro tema y programas, apareció un hipervínculo a R, casualmente en estos hay un artículo de algebra y R, no es nada técnico en términos matemáticos o estadísticos, se trata un poco sobre la educación y la capacidad de R. De esto en la ultima parte aparece una referencia a la capacidad de procesamiento de R, bueno, no es tan R porque se trata de la versión

Estimado Mauricio Monsalvo R es un lenguaje medio complicado, no es orientado a objetos, aunque hay formas para un trabajo con objetos, por otro lado se puede definir una función o emplear 5 paquetes para lo mismo en dos líneas de código. Usted tiene 1500 líneas de código, no es fácil de comprenderlas, tampoco hay recetas mágicas. Yo ordenaría como si fuesen cajas, una entrada, un proceso

Hi devs, I''ve been using btrfs on my file server since 2.6.32 and after upgrading to .33 I noticed that rebalancing took way longer than before. I have a 5 disk array used for a btrfs md setup, different hard drive sizes, brands, and interfaces. The last time I rebalanced I was using about 800GB of space on the 4.6TB array, and I started before I went to sleep and it was done when I

Hola, Marta, Por lo que he podido ver tus datos ya tienen calculados las tasas de verdaderos y falsos positivos (TPR y FPR). También parece que los tienes ordenados por la variable FishSpeed y supongo que también por las que parecen marcas de tiempo. No necesitas ROCR porque con un simple plot te sale algo parecido a una curva. Eso sí, veo que son medidas repetidas en el tiempo para cada valor de

Dear expeRts, I'm currently trying to get data from a PostgreSQL database _in parallel_. I tried two methods: * passing the DBI Connection object to the cluster nodes * connecting the the DB on each node (1) The execution of the first method looks like this: > result = sfClusterApplyLB(input, fun, dbiCon) and produces an "expired PostgreSQLConnection" error. (Of course the

I have set up a postgresql database that I connect to each R startup in my .Rprofile file. ##############relevant lines from .Rprofile############################ library(RPostgreSQL) m <- PostgreSQL() con <- dbConnect(m, user="xxx", password="yyy", dbname="zzz") ####################################################################### in R con <Expired

RPostgreSQL version 0.1.0 We are pround to announce the availability of the RPostgreSQL package on CRAN and its mirrors. This package provides an a DBI-compliant interface between PostgreSQL and R. RPostgreSQL was developed as part of the Google Summer of Code 2008 program by Sameer Kumar Prayaga. Some highlights: o Implemented all the DBI features o Added support for transaction

Hi - I have a simple R script that inserts values into a Postgres table to generate a record that autogenerates a bigint unique ID (basically, a customized bigserial value). When I query the table to retrieve the bigint value, the value returned is not the same as the value created in the database (as evidenced by a direct query of the database table via pgAdmin). e.g. the value created should

Dear all, I'd like to use the package RPostgreSQL. I'm using R version 2.8.1 and I've download the last version RPostgreSQL. When I load the package, I get something like "the file LIBPQ.DLL is missing". Do you have any idea about what I'm suppose to do ? Thanks everyone. _________________________________________________________________ [[elided Hotmail spam]]

Hi Everybody I use R2.9.2 on Mac OS X 10.5.2. I tried to install RPostgreSQL from source on CRAN via the package installer. Apparently the program cannot find my C compiler gcc . Here is the output message trying URL ' http://cran.za.r-project.org/src/contrib/RPostgreSQL_0.1-6.tar.gz' Content type 'application/x-gzip' length 141399 bytes (138 Kb) opened URL

Dear all, I'm an absolute R-beginner and want to connect to my PostgreSQL DB (on my local Mac OSX 10.6). 1) I tried to install RPostgreSQL (Package Installer > CRAN (sources)) and get this log below. There seems to be an issue with libpq, bug I don't have any clue how to fix this. What can I do? 2) Once this issue is solved, should this code work? drv <-

Hi, I've just started using RPostgreSQL within R to interrogate a PostgreSQL database. The problem I have is that a column containing dates shows up differently in R than in the database: here is the output direct from the psql database in Linux: db=> select pat_dob_dt from patients where pat_dob_dt like '%1980'; pat_dob_dt ------------ 04/05/1980 01/12/1980 04/05/1980

RPostgreSQL version 0.1.0 We are pround to announce the availability of the RPostgreSQL package on CRAN and its mirrors. This package provides an a DBI-compliant interface between PostgreSQL and R. RPostgreSQL was developed as part of the Google Summer of Code 2008 program by Sameer Kumar Prayaga. Some highlights: o Implemented all the DBI features o Added support for transaction

Dear all, I am stuck trying to get RPostgreSQL running on my Mac. PostgreSQL itself does work fine as it is able to connect with various other apps. Unfortunately the RPostgreSQL package is not available as a binary for MAC OS. Thus I?ve been trying to compile the source for quite some time now - unfortunately without success (or at least very limited success). First, running

I'm starting to seriously use R and have tried to solve this issue using my reference books but I'm missing something simple. Running R-2.13.1 on Slackware-13.1. Trying to invoke RPostgreSQL so I can copy data from a postgres table to an R data-frame. I installed RPostgreSQL and the library() command shows it's present: Packages in library

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Hi, I am getting the following error while trying to install RPostgreSQL. I tried all three methods(install.packages("RPostgreSQL", type = "source"),install.packages("RPostgreSQL") & R CMD INSTALL RPostgreSQL_0.3-1.tar.gz ) , but none of them is working. ++++++++++++++++++ Error++++++++++++++++++++++++ gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -I

Hi, I'm having trouble connecting to my postgreSQL db on Heroku(Amazon) using RPostgreSQL. I've looked through GitHub for people doing the same thing. There are quite a few examples and all look similar to the below: drv <- dbDriver("PostgreSQL") con <- dbConnect( drv, dbname = "dadqn30er7ghpl", host =