search for: dumpdf

...is: > somedata <- data.frame(age.min = 1, age.max = 1.5, male = TRUE, l = -1.013, m=16.133, s=0.07656) In order to back up the data and I don't want to use write.table(), I would like to back up the "source code" of the data frame. When I apply that function (let's call it dumpdf() ), the function will reproduce the "source code" that creates the data.frame. For example: > dumpdf(somedata) somedata <- data.frame(age.min = 1, age.max = 1.5, male = TRUE, l = -1.013, m=16.133, s=0.07656) Is there any function similar to the dumpdf() above? Thank you so much!...

...data set that has about 112,000,000 rows and 8 columns and obviously enough it was too big for R to handle. The columns are mode up of 2 integer columns and 6 logical columns. The text file is about 4.2 Gb in size. Also I have 4 Gb of RAM and 218 Gb of available space on the hard drive. I tried the dumpDF function but it was too big. Also tried bring in the data is 10 sets of about 12,000,000. Are there are other ways of getting around the size of the data. Regards, Lorcan [[alternative HTML version deleted]]

...REAT FALLS GAS CO -6.2500 5200 ###/*MY ATTEMPT USING FILEHASH*/### #First, try and upload the 29 row dataset (the tiny subset of the whole dataset). install.packages("filehash");require(filehash) dumpList(read.table("dataset2.txt",skip=6),dbName="db02") #Note that DumpDF also works. env02 <- db2env(db="db02") with(env02,V1) # [1] 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 10001 [27] 10001 10001 # with(env02,V2) # [1] 01/10/1986 01/13/1986 01/1...

...y I know now to append to an object, basically requires rewriting the entire object. Sample code: ================================================= # Setting up the database library(filehash) A <- data.frame(a=c("abcde", "fghij", "klmno"), stringsAsFactors=FALSE) dumpDF( A, dbName="myTestDB") envTest <- db2env(db="myTestDB") ls(envTest) with(envTest, a) # Appending to object a, but basically rewriting it... envTest$a <- c(envTest$a, "HELLO", "GOODBYE") with(envTest, a) If anyone has a suggestion on how to append to...

Dear R users, I try to use a very large file (~3 Gib) with the filehash package. The length of the dataset is around 4,000,000 obs. I get this message from R while trying to "load" the dataset (named "cc084.csv"): > dumpDF(read.csv("cc084.csv", header=T), dbName="db01") Erreur : impossible d'allouer un vecteur de taille 15.6 Mo (French) Error: impossible to allow a vector of size 15.6 Meg (my English translation) Is there anything I can do? My R version is 2.8.1. ----- Rock Ouimet Forest Soi...