similar to: HELP: ff package

I've noticed that ff uses the unzip utility available on it's host OS to load datasets via ffload. It seems to work fine in linux, but when I try to use the package in Windows (hence dling Windows unzip utils) I get 2 errors, one telling me that the options aren't being passed to unzip correctly and another indicating that my filename is incorrect. First, does anyone know of an unzip

Hi all, I am having trouble loading a ff object previously saved in a different computer. I have both files .ffData and .RData, and the first of them is 13Mb large from which I know the data is therein. But when I try to ffload it, checkdir error: cannot create /home/_myUser_ Permission denied unable to process home/_myUser_/Rtempdir/ff1a831d500b8d.ff. and

Hi, I have been using ffsave.image() to save mixture of ff and normal objects in my workspace. e.g. ffsave.image(file = "C:\output\saveobjects", rootpath = "D:\fftempdir", safe = TRUE) It works fine but once my workspace has large (~4GB) objects, I get the error: Error in ffsave.image(file = "C:\output\savedobjects", rootpath = "D:\fftempdir", safe =

Dear list, I am trying to understand and use the ff package. As I had some problems saving some ff objects, and as I did not fully manage to understand the whole concept of *.ff, *.ffData and *.RData with the help of the documentation, I tried to reproduce the examples from the help of ffsave. When I ran, however : (copied from the help) message("let's create some ff objects")

Hi All, My script generates a mixture of normal and ff objects. I need to run the script for different parameter settings. Very often I would like to save the workspace for each parameter setting, so that I can get back to it later on. Is there an easy way to do this, instead of needing to save individual ff objects separately? I've tried the naive way of just saving the workspace, only to

Hi, I am running the examples in page 70 of the ff package document, but it failed with the following error > cat("let's create some ff objects\n") let's create some ff objects > n <- 8e3 > a <- ff(sample(n, n, TRUE), vmode="integer", length=n, filename="d:/tmp/a.ff") > b <- ff(sample(255, n, TRUE), vmode="ubyte", length=n,

Hi Mehdi, > I’m not sure to understand this claim? You are supposed to be able to extend and subclass the type of diagnostics? (I remember doing it for an out-of-tree LLVM-based project). You can subclass diagnostics, but subclassing (on its own) only lets you change the behaviour of the diagnostic/error itself. What we need, and what this patch supplies, is a way to choose a particular

Hi Mehdi, > For a generic error class it is not an option indeed, but I was looking at it in the context of LLVM internal use, so just like our RTTI is not an option for “generic RTTI” but fits our need, we could (not should) do the same with ErrorHandling. Definitely. If this was LLVM only there'd be a strong case for using the existing RTTI system. The reason for the new RTTI system is

Dear R friends. After having some troubles learning how to create a ffdf object, now I find myself having problems saving it. this is the data i´d like to save: str(DATA) List of 3 $ virtual: 'data.frame': 6 obs. of 7 variables: .. $ VirtualVmode : chr "double" "short" "integer" "integer" ... .. $ AsIs : logi FALSE FALSE FALSE

Hi Mehdi, > Side question on the related work because I’m curious: did you look for similar generic scheme for error handling offered by other C++ libraries? Maybe the common scheme is to use C++ exceptions but since many folks disable them (hello Google ;-) ) there has been probably many other attempts to address this. I did look around, but not very hard. Among the people I asked, everyone

Hi Mehdi, > If you subclass a diagnostic right now, isn’t the RTTI information available to the handler, which can then achieve the same dispatching / custom handling per type of diagnostic? > (I’m not advocating the diagnostic system, which I found less convenient to use than what you are proposing) I have to confess I haven't looked at the diagnostic classes closely. I'll take a

Hi, I cannot seem to find out how to pass in a value to a partial. Can anyone help me? What I am doing(in the code below) is calling a function in my controller called setobject. This function just redraws the partial. I want to be able to change the value @objectname, redraw my partial and have it be able to use that value. The first the page is drawn it works, but when i call setobject it

Context: I'm relatively new to R and am working with very large datasets. General problem: If working on a dataset requires that I produce more than two objects of roughly the size of the dataset, R quickly uses up its available memory and slows to a virtual halt. My tentative solution: To save and remove objects as they're created, and load them when I need them. To do this I'm

I am still struggling to map a character string to an object name and vice versa in R. I thought the as.name() function might work, but observe the following behaviour ... > attach(warpbreaks) > levels(tension) [1] "L" "M" "H" > levels(as.name("tension")) NULL > objectname<-as.name("tension") > objectname tension >

Is there anyway I can convert a vectors objectname to a string to be used in fx: Monkey<-c(0,0,0,1,1,1) Wax<-c(1,0,1,0,1,0) f<-function(x,y){ table(x,y) } f(Monkey,Wax) so that the printout is not y x 0 1 0 1 2 1 2 1 but Wax Monkey 0 1 0 1 2 1 2 1 -- View this message in context:

Hello, I get this error trying to load some data from DB. I''m using Rails 1.2.2 on Fedora Core 6 and Sybase adapter. This worked fine when application run under Rails 1.1.6 but now I''m migrating to 1.2.2 and have some problems. At browser I got: SQL Command for table_structure for tplib_bckps failed Message: schema_info not found. Specify owner.objectname or use sp_help to

Is there any reason why IAXPeers output is different from SIPPeers output? The response has no Eventlist: start Ej. Response: Success Eventlist: start Message: Peer status list will follow Event: PeerEntry Channeltype: SIP ObjectName: 1001 ChanObjectType: peer IPaddress: 192.168.175.1 IPport: 63772 Dynamic: yes Natsupport: no VideoSupport: no TextSupport: no ACL: no Status:

Dear List, I have a series of nested loops with the structure shown below, and I am struggling to figure out how to divert output to folders created with dir.create() within the loops. What I need is for the output to end up as topNameK/subNameL/objNameM.pdf; what I get instead is a series of directories topNameK/, directories subNameL/, and files objNameM.pdf, all in the working directory. Any

Dear R community, Package bit version 1.1-3 and ff version 2.1.2 is available on CRAN and should be useful to handle large datasets. It adds convenient utilities for managing ff objects and files (see ?ffsave) and removes some performance bottlenecks. In case you experience unexpected performance problems with ff, here is a couple of recommendations based on FAQs: 1) Compare the size of data

Dear R community, Package bit version 1.1-3 and ff version 2.1.2 is available on CRAN and should be useful to handle large datasets. It adds convenient utilities for managing ff objects and files (see ?ffsave) and removes some performance bottlenecks. In case you experience unexpected performance problems with ff, here is a couple of recommendations based on FAQs: 1) Compare the size of data