[R] Saving Rdataframe into a SQL Server Schema and updating the resulting table

Hi all Can someone assist me in creating a table in SQL Server using a Rdataframe as well as updating it with new records Here's my sample script in R. library(RODBC) #Connecting to Datum myconn <-odbcConnect("Datum", uid="bihy", pwd="tarta") ### Server name is Datum Now I would like to save

[R] Training and testing on Unbalanced Data Set

into train and test and do the fitting and testing on this data set only In first approach my results might get skewed so which approach should I take and Why ? -- Vijay Goel *+91-7501378852* __ R-help@r-project.org mailing list https://stat.ethz.ch

[R] Fisher Scoring v/s Coordinate Descent for MLE in R

R base function glm() uses Fishers Scoring for MLE, while the glmnet uses the coordinate descent method to solve the same equation ? Coordinate descent is more time efficient than Fisher Scoring as fisher scoring calculates the second order derivative matrix and some other matrix operation which ma

[R] Performing same steps on multiple dataframes using a loop - vijay

speed column by 1000 So df.1cleaned would look like NameNetwork. Speed. State Hartford_CT. HSPA. 1. CT Can someone help me come up with a loop or a function that loops through all dataframes and produces all three dataframes Thanks Vijay Sent from

[R] Appending Excel File Data in different folders into Single Dataframe

how I would go about this Vijay [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide

[R] Reverse geocoding Latitude and Longitude to address/name of location

knows how to do item 1 and/or 2 in R or if there is a function that can do this in another language. Thanks Vijay [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do rea

Re: [R] sum specific rows in a data frame

This is very cool...thanks Hadley. When are you planning to release that version? On Thu, Apr 15, 2010 at 9:09 AM, hadley wickham wrote: > On Thu, Apr 15, 2010 at 1:16 AM, Chuck wrote: > > Depending on the size of the dataframe and the operations you are > > trying to perform, aggregate or ddpl

Re: [R] search and replace

Dennis -- it does! However, how can a more generic situation be handled where South,North,East,West are replaced by x2,d6,qqw,mQ respectively? Thanks. On Wed, Apr 14, 2010 at 11:41 PM, Dennis Murphy wrote: > Hi: > > Does this work for you? > [[alternative HTML version deleted]] _

Re: [R] when deleting a row from a matrix gives a vector

On Nov 2, 2007, at 12:50 PM, Sarah Goslee wrote: > x <- x[1, drop=FALSE] > >> Is there any way to force the result to remain a matrix, even if it >> has only one row or column, or even only one entry? Thanks, I think you might have meant ... x <- x[1,,drop=FALSE] Note the double commas ... - VV