search for: luqu

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2005 Nov 30
3
setting R_LIBS
...adding this to my ~/.Renviron: R_LIBS="~/R/library:${R_LIBS}" so that once in R: R> cat(Sys.getenv("R_LIBS"), "\n") ~/R/library:/usr/local/lib/R/site-library:/usr/lib/R/site-library:/usr/lib/R/library Is this the best way to proceed? Cheers, -- Sebastian P. Luque
2005 Feb 22
6
rodbc or unixodbc error
...found that somebody solved it by specifying a default driver in a odbc.ini file. Can somebody please tell whether this is the right approach, and if so, how to write that specification? I saw that one might do this in a ~/.odbc.ini (i.e. the user's config file) file. Best wishes, -- Sebastian Luque
2011 May 25
1
L-BFGS-B and parscale in optim()
Hi, When using method L-BFGS-B along with a parscale argument, should the lower and upper bounds provided be on the scaled or unscaled values? Thanks. Cheers, -- Seb
2005 Apr 07
2
newline in lattice axis label
...ch is probably associated with 3 warnings: Warning messages: 1: font metrics unknown for character 10 2: font metrics unknown for character 10 3: font metrics unknown for character 10 Any help defining the ylab argument in this case is greatly appreciated. Thanks in advance, -- Sebastian P. Luque
2006 Mar 15
3
concatenating factor from list
Hi, I've run into a ridiculous problem I can't find any solutions for in the archives or help pages: data(barley) cutYield <- with(barley, by(yield, variety, cut, breaks = c(0, 30, 60, 90))) As in this example, I'm using 'by' to return a factor for each level of another factor. The problem is that 'by' returns a list of the factors, and I need all these factors
2005 Mar 23
2
alternative to 'groups' for lattice bwplot()
...or a more complex one with additional conditioning variables (as in my actual problem). I thought I'd find something about this in the archives, but I'm either not using the right keywords or the question hasn't come up yet. Some help on how to deal with this please? -- Sebastian P. Luque
2004 Feb 17
10
How to write efficient R code
I have been lurking in this list a while and searching in the archives to find out how one learns to write fast R code. One solution seems to be to write part of the code not in R but in C. However after finding a benchmark article (http://www.sciviews.org/other/benchmark.htm) I have been more interested in making the R code itself more efficient. I would like to find more info about this. I have
2005 Sep 20
3
annotating an axis in bwplot (lattice)
...the 'subscripts' argument may be useful for the second issue, but I'm not discovering how. For the first point, I'll have to play some more with 'scales' argument and its 'at' and 'labels' components. Any suggestions? Thanks in advance, -- Sebastian P. Luque
2016 Feb 06
1
building R Devel --enable-R-shlib
On Fri, 5 Feb 2016 06:29:46 -0600, Dirk Eddelbuettel <edd at debian.org> wrote: > On 4 February 2016 at 22:56, Sebastian P. Luque wrote: >> Hello, >> >> It has been a while since my last R Devel build, and now I'm running >> into an issue I'm not sure how to isolate. After updating to the >> latest SVN sources, and using: >> >> ---<--------------------cut >> here-...
2005 Oct 04
1
pdf plotting of splom
...or a split second when opening the file, but they seem to be replaced by white space immediately, hence the totally empty panels. Any pointers as to what might be going on? I wasn't able to find possible explanations on the documentation or the archives. Thanks in advance, -- Sebastian P. Luque
2005 Feb 23
1
MS Access, Endnote, among others
...en resolution and remove the "Resolution" entry in the config file Please use the registry key HKEY_CURRENT_CONFIG\Software\Fonts\LogPixels to set the screen resolution and remove the "Resolution" entry in the config file I'd be grateful for any hints. Cheers -- Sebastian Luque
2005 Aug 02
1
cut.Date functionality for chron date/time objects
...hs, years, etc., but not any fractions or multiples of these. Converting the chron objects to POSIXct (via 'as.POSIXct') and then using cut.Date works, but is inconvenient, as it introduces time zone information. Is there a better way to deal with this? Thanks in advance, -- Sebastian P. Luque
2006 Feb 18
1
reshaping result of by()
...ent of the matrix value of 'by'. I could then do: do.call(rbind, freqs) to obtain the final data frame, which would then have all the necessary information. Any help with manipulation of the dimnames(freqs) (or something even better) would be very appreciated! Cheers, -- Sebastian P. Luque
2006 Feb 21
2
indexing within panels in xyplot
...sage: no finite arguments to max; returning -Inf which shows I'm not understanding how the 'subscripts' argument works. I'd appreciate some pointers on what I'm doing wrong, as I haven't been able to find help in the help pages and List archives. Thanks, -- Sebastian P. Luque
2006 Sep 26
3
standardization of slot access
Hi, I'm usually confused about when to use 'slot' or '@'. I've frequently read that it's always preferable to use accessor functions, so I would think the '@' operator should be avoided. However, ?slot contains the following advise: "Generally, the only reason to use the functional form rather than the simpler operator is _because_ the slot name has to
2006 Jul 14
2
chron vs. POSIX
...d to rely on an external package. What do others think? +---- *Footnotes* ----+ ? This is possible with POSIX classes too by using the structure() function, but a post by Brian Ripley to the effect that it may not be practical in the long term further convinced me of this. -- Sebastian P. Luque Department of Biology Memorial University of Newfoundland sluque at mun.ca
2005 Jun 04
2
locator() via tcltk
..., quit.but) } I'd like testplot to return the value from getcoords. The "Get coordinates" button seems to be correctly calling getcoords, and locator is doing its job, but I don't know how to store its value. Any help is very much appreciated. Regards, Sebastian -- Sebastian P. Luque
2005 May 17
2
cumsum on chron objects
...of data. I thought I could use cumsum and set the NA's to the desired interval to create the date/time sequence starting with the first row. However, this function is not defined for chron objects. Does anybody know of alternatives to create such a sequence? Thanks in advance, -- Sebastian P. Luque
2012 Sep 18
2
problem with vignettes when S4 classes in packages overlap
( A similar problem is also reported by Sebastian P. Luque with library(maptools) library(trip) in the vignette as below ). I am writing a vignette which loads RMySQL and RPostgreSQL. This produces the warning: Loading required package: DBI Warning in .simpleDuplicateClass(def, prev) : A specification for class ?dbObjectId? in package ?RPostgr...
2006 Oct 11
2
pinning R packages to unstable?
Dear Debian R users, This is more of an apt question rather than R. I have a testing Debian system, but would like to use the unstable packages for R, *without* using the -t flag in apt-get. I think this is done by using a 'pin' rule in /etc/apt/apt.conf, but don't understand how this should be done. Can somebody provide an example please? Cheers, -- Seb