similar to: Slow reshape from 5x600000 to 6311 x 132

Hello, I am trying to construct two matrices, F and V, composed of partial derivatives and then find the eigenvalues of F*Inverse(V). I have the following equations in ryacas notation: > library(Ryacas) > FIh <- Expr("betah*Sh*Iv") > FIv <- Expr("betav*Sv*Ih") > VIh <- Expr("(muh + gamma)*Ih") > VIv <- Expr("muv*Iv") I

Hi R-List, I have a question regarding R-language formats, I think. I am producing a series of graphs (using plot, barplot, barchart, and bwplot, using either text or mtext to place values on the graphs) and tables for a Francophone country. In fact, I have already done so. However, while they are pleased with the results they've requested I convert all of my decimal points into the French

Apologies for the cross-post, this effects both clang and llvm. I was looking into the startup time of clang on small files ( http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20080818/007171.html ) and discovered that a significant amount of our startup time was being spent in the linker resolving weak symbols. At least on Darwin, this was actually the dominant factor in our startup

Okay, I've been chasing performance for a while now. I have no idea if I should be trying to get better performance or if I'm getting all I can out of my hardware. Here is the information: /sbin/hdparm -I /dev/hdd /dev/hdd: ATA device, with non-removable media Model Number: ST328040A Serial Number: 7BY034XB Firmware Revision: 3.07 Standards:

https://bugzilla.samba.org/show_bug.cgi?id=10579 Summary: --xattr internal abbrev error Product: rsync Version: 3.1.0 Platform: All OS/Version: Mac OS X Status: NEW Severity: major Priority: P5 Component: core AssignedTo: wayned at samba.org ReportedBy: samba at haravikk.com

When I try to install the tinc RPM I am missing [root@relay buytaert]# rpm -vih tinc-1.0pre2-1.i386.rpm error: failed dependencies: libgmp.so.2 is needed by tinc-1.0pre2-1 [root@relay buytaert]# ls /usr/lib/libgmp.so.3 /usr/lib/libgmp.so.3 [root@relay buytaert]# rpm -qf /usr/lib/libgmp.so.3 gmp-3.1.1-3 This seems to be a too recent version. So I tried compiling it and got the following

> tbs<-dbListTables(con) > > tbs [1] "lowend" "time" "week30" "week33" "week39" "week42" > my.data.copy <- dbReadTable(tbs, "week42") Error in function (classes, fdef, mtable) : unable to find an inherited method for function "dbReadTable", for signature "character",

HI, I got the problem. I use the following query to read table individually, how can I read all tables autimatically rather than typing "week42" "week33" in dbReadTable? library(RSQLite) library(sqldf) drv <- dbDriver("SQLite") con<-dbConnect(drv, "sqlite.db") dbListTables(con) #dbRemoveTable(con, "week39") dbDisconnect(con)

I only want to load a limited number of rows by dbReadTable(). I don't see an option in the help. Is there an option to do so?

Hello R users, I am reading data into R from RMySQL or SQLite databases which are in Spanish language. I am using RMySQL library and function dbReadTable but I could not get characters with ñ and tilde, instead R does put ?. In the past I could manage it modifying the R options as (using windows): op <- options() op$encoding <- "iso-8859-1" options(op) but now in ubuntu it did

I am using R 2.8 and the latest versions of RMySQL on a Windows XP 64 bit machine. I was wondering if someone could help me figure out how to use dbWriteTable without inserting \r into my table. Consider the following code snippet, which is run after I connect to my database. myDFOut = dbReadTable(conn, "myDF") print(myDFOut) myDFIn = data.frame(x=paste("x", 1:5, sep =

It seems that the dbReadTable() method provided by RMySQL could not get rid of the headers, neither the index column... So 1. Can I use read.table() method to get a table of MySQL database? >From the help document the argument of 'file' of read.table() method could be a connection... 2. How can I obtain a matrix from the database table contains all elements except the headers and the

If I save a dataframe with a character-typed last column to a relational database with dbWriteTable, the values in the last column of the resulting table in the database will have a '\r' (carriage return) appended. If I read back the dataframe with dbReadTable the last column in the resulting dataframe has also '\r' appended (see protocol below). Setting or unsetting sql-mode

There is a little problem in handling logicals in RMySQL: # here is the MySQL connection > con <MySQLConnection:(1816,0)> # here is the data frame > print(a<-data.frame(x=c(TRUE,FALSE),y=c(FALSE,TRUE))) x y 1 TRUE FALSE 2 FALSE TRUE # as promised, the two data frame columns are identified as logicals and # the field types are set to tinyint > field.types <-

Hello, I am calling the following code with the loop! It makes 3 out graphs but empty! COuld you help me plase on that? Thank you in advance z1 <- dbConnect(MyData, "something", "A1", "A2") for (tt in c("xyz", "abc", "m1")) { message(paste("Here", tt, "!!!")) mydata <- dbReadTable(z1, tt)

I've been putting together a package that defined generic methods for database access. The packages is called "Rdbi." It borrows as much as possible from existing database packages / proposals. I'd like to start a discussion about the proposed interface. Here's what I've come up with so far: # # Rdbi: connectionMethods.R # dbConnect <- function(dbObj, ...)

I am trying to read and write database tables that have a date field in them. I am constructing a data.frame, then using dbWriteTable to create the table and dbReadTable to read it. >datatbl<-data.frame( dates, trialnum, fooddel, ethdel, trialtime, trialtype, deliveries, food, ethanol, fcumrec, dcumrec, rrf, rrd) >ifelse(startdate==filelist,

Dear List, I have this little problem: I work with adiacency matrix like: data me you me 0 1 you 1 0 I store those matrix in a mysql database actually I use RMySQL with: res<-dbSendQuery(connection, "SELECT * FROM table") myDataFrame<-fetch(res) to retrive the table, and I have data me you 1 io 0 1 2 tu 1 0 I would like the first column to be seen

All: I am using RSqlite and want to be able to update individual values in a record, such as with this simple example: library(RSQLite) drv<-dbDriver("SQLite") con<-dbConnect(drv,"test.db") my.data<-data.frame(countries=c("US","UK","Canada","Australia","NewZealand"),vals=c(52,36,74,10,98))

HI. I make this code: getdata<-function('a','b','c' ,'d','e','f'){ drv <- dbDriver("SQLite") con<-dbConnect(drv, "sqlite.db") lt<-dbListTables(con) myf<-data.frame(NULL) for (i in 1:length(lt)) { myfile<-dbReadTable(con,lt[i]) myfile1<-myfile[-c(14:44)] myfile1$MODEL<-gsub(" ",