Dear Folks--
I have a 14 gig .csv file with 731 columns. I have read it into a colbycol
object (which took overnight – about 16 hours) using the code below, which
produced no warnings or error messages. The object, CPS62_12, is 49 gig.
After the reading, summary() produced the output below and col
Exactly how do you want to work with this data? How do you want it
organized? What is the structure of the file that you want to read
in? What types of analysis are you going to do? Does all the data
have to be in memory at once, or can you construct your analysis to do
it in pieces and the agg
Hi all,
I am trying to use the filehash library to analyze a 5M by 20 matrix with both
double and string data types.
After consulting a few tutorials online, it seems as though one needs to first
read the data into R; then create an R object; and then assign that object a
location in my com
Trying to install package 'filehash' I get the following error on
FreeBSD 9.0-CURRENT (amd64) with R version 2.11.0 (2010-01-15 r50990):
---
R CMD INSTALL filehash_2.0-1.tar.gz
* installing to library '/usr/local/lib/R/library'
* installing *source* package 'file
Hi,
I have been using filehash for a while. It has performed very well.
However, recently I found filehash gives an error when I need to do
something like db[c("a", "b")] when the db is in RDS format. Does any one
know a way to get around that?
The code below reproduces the error
thanks
Jeff
f
Yes, the file will be created in the current working directory and is probably
the reason for the error in 'dbInit'. This is a bit of a dumbo on my
part---thanks for copying me.
-roger
Prof Brian Ripley wrote:
> I suspect you have a file permission problem, and noticed filehash has
> some bug
I suspect you have a file permission problem, and noticed filehash has
some bugs which would mask this. E.g. it does
createDB1 <- function(dbName) {
if(!hasWorkingFtell())
stop("need working 'ftell()' to use 'DB1' format")
if(!file.exists(dbName))
file.create(dbName)
Hello,
I'm using filehash on the windows XP and it has been working fine with the
newest R version 2.6.2. However, on the windows vista, when I ran the same
code, I got the following error:
> dbCreate("simdb")#create simdb database
[1] TRUE
> db<-dbInit("simdb") #initiate an object of databa
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