Displaying 20 results from an estimated 3000 matches similar to: "Passing references to data objects into R functions"
2005 Apr 22
2
How to tell if R is running in batch mode
Hi
Is there a way to programmatically tell whether R is running in batch or
GUI mode?
Thanks
Dave
_______________________________________________
David Khabie-Zeitoune
Quantitative Arbitrage
Brevan Howard Asset Management
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2003 Jul 29
5
Sending emails from R under Windows
Hi
Does anyone know of any R routines to send emails from R, under Windows?
I thought about writing such a facility using the R(D)COM package to
drive e.g. MS Outlook, but I don't want to reinvent the wheel. I have
found a function Sys.mail in the library syskern, but this only works
under Unix by shelling out a mail command.
Thanks,
David
2003 Jul 29
5
Sending emails from R under Windows
Hi
Does anyone know of any R routines to send emails from R, under Windows?
I thought about writing such a facility using the R(D)COM package to
drive e.g. MS Outlook, but I don't want to reinvent the wheel. I have
found a function Sys.mail in the library syskern, but this only works
under Unix by shelling out a mail command.
Thanks,
David
2003 Sep 08
2
R video
Hi
Does anybody know of any R packages under Windows to produce video files
from a sequence of R graphs -- e.g. in .wmv or avi format?
Thanks
David
2003 Jun 13
1
RDCOM Client: processes not terminating
Hello
I am using Duncan Lang's RDCOM Client package (available on
omegahat.org) under R 1.7.0 and Windows XP Pro.
Is this the right forum for questions about this package? In case it is,
here is my question:
Instances of COM objects do not seem to terminate as expected, but leave
residual processes running. For example, if I try the simple example:
E <-
2003 Jun 25
2
rw1062
hi
I need 'rw1062.zip' since i can't get excel, R1070 or R1071 to work with the R (D)COM Server
everything worked fine in the god rw1062 days
the lapack routines can't be loaded
'unable to load shared library c:\r/moduleslapack.dll, the specified library could not be found'
don't know if it's the forward slashes that anoys windows
btw, the libraries are in the
2003 Jun 02
1
Help with factorized argument in solve.QP
Hi
I'm having problems getting the "factorized" argument in solve.QP (part
of the quadprog library) to work as expected. The helpfile states that
when the factorized argument is set to TRUE, then the function requires
the inverse of a square-root factor of the Hessian instead of the
Hessian itself. That is, when factorized=TRUE, the Dmat argument should
be a matrix R^(-1), such
2003 Jul 21
1
RODBC: problem saving a new table in an "Excel database"
Hi
I am using package RODBC version 1.0-1 under R version 1.7.1 on Windows
XP Pro. I am having problems writing a new table to an (Excel) database
using sqlSave.
I connect to an empty Excel spreadsheet using odbcConnectExcel (which, I
believe, uses the Microsoft Excel Driver DSN). Then I try and save a new
table to the database(spreadsheet) using SqlSave, but obtain an error
message.
Below is
2003 Aug 13
1
Mapping function dependencies
Hi
Does anyone know of any automatic way of mapping out the dependencies of
a function -- i.e. automatically listing which other functions that
function calls? I tried using all.names or all.vars, but I can't get it
to work on a function: e.g.
> test = function(x, y) return(sin(x + y)*cos(x + y))
> all.names(expression(test))
[1] "test"
I guess the problem is that all.names
2003 Jun 13
2
Layout of windows devices
Hi
Is there a way to specify the location on the screen where a new
graphics device opens, for example with a call to win.graph()?
I'm using R 1.7.0 on Windows XP.
Thank you.
Regards,
David
2003 Sep 11
3
Flipping a heatmap
Hi
I am using the heatmap function in package mva to look at large
correlation matrices visually.
Is there any way to "flip" the output of heatmap plot left-right so
that, if presented with a correlation matrix, it plots the unity
elements in the correlation matrix along a diagonal from top left to
bottom right?
For example:
library(mva)
x = matrix(rnorm(1000), ncol=10)
z = cor(x)
2003 May 29
3
Odd behavior of strptime
The example from the help page for strptime has the following oddity:
> dates <- c("02/27/92", "02/27/92", "01/14/92",
+ "02/28/92", "02/01/92")
> times <- c("23:03:20", "22:29:56", "01:03:30",
+ "18:21:03", "16:56:26")
> x <-
2003 Jun 16
3
Constrained optimization
Greetings, R-Wizards:
I'm trying to find an extremum subject to a nonlinear constraint. (Yes, I
have perused the archives but have found nothing positive.) The details of
the problem are these:
In a paper published some years ago in Technometrics, ("Confidence bands for
cumulative distribution functions of continuous random variables"
Technometrics, 25, 77-86. 1983), Cheng and
2020 Mar 07
2
NUT-Server will not start at boot with Cyberpower PR1500
Hi Charles,
Thanks for your response. No, I only put 192.168.1.64 as an extra option as I want to allow Slave access from another computer. Otherwise, access will normally only be from localhost. There is only one network interface on this machine.
I will try it out with "LISTEN 0.0.0.0 3493" and see what happens. I must confess I usually run without a firewall as I'm only running a
2007 Mar 14
1
allocVector reference
Hi,
I'm trying to write a function to return an R vector which points
directly to a contiguous subset of another vector, without taking a
copy. Since SEXPREC is a header followed by the data, rather than the
header plus a pointer to the data, I'm not sure what I'm trying to do is
possible. Is there a way of doing this? Similar in spirit to how the R
assignment "x=y" does
2015 Oct 26
1
[PATCH 4/4] nouveau/debugfs: add interface for current load
On Mon, Oct 26, 2015 at 2:13 PM, Karol Herbst <nouveau at karolherbst.de> wrote:
> From: Karol Herbst <git at karolherbst.de>
>
> ---
> drm/nouveau/include/nvif/device.h | 1 +
> drm/nouveau/include/nvkm/subdev/pmu.h | 10 ++++++++++
> drm/nouveau/nouveau_debugfs.c | 23 +++++++++++++++++++++++
> drm/nouveau/nvkm/subdev/pmu/base.c | 18
2006 May 04
3
SQL like manipulations on data frames
Is there a cheat-sheet anywhere that describes how to do SQL-like
manipulations on a data frame?
My knowledge of R is rather limited. But from my experience it seems
as though one can think of data frames as being similar to tables in
a database: there are rows, columns, and values. Also, one can
perform similar manipulations on a data frame as one can on a table.
For example:
2002 Dec 05
1
Passing options as lists
Hi,
I apologize if this has previously been posted. I've just subscribed to the
R-help digest.
I'm writing a plotting function that uses layout() to plot several different
plots on the same device. This function uses plot(), image(), and a custom
function that uses text(). Each cell of the layout needs different par()
parameters, so what I'd like to do is pass them as lists:
2007 Dec 19
5
assigning and saving datasets in a loop, with names changing with "i"
Dear R users,
I am analysing a very large data set and I need to perform several data
manipulations. The dataset is so big that the only way I can play with it
without having memory problems (E.g. "cannot allocate vectors of size...")
is to write a batch script to:
1. cut the data into pieces
2. save the pieces in seperate .RData files
3. Remove everything from the environment
4. load
2002 Sep 04
1
Passing dynamic sql statement to RODBC functions
Hi,
Does anyone know how to pass dynamic sql statement to RODBC function
"odbcQuery()" or "sqlQuery()"?
eg.: under R session, I did:
>library(RODBC)
>channel<-odbcConnect(...)
>data1<-2.5
>data2<-5.0
I want to construct the INSERT sql statement using variables "data1" and
"data2" and pass this statement to odbcQuery() . Can I do this?