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202 results for “from:Jan van der Laan”

quiry on paste() function
Jan van der Laan · Oct 29, 2010 · r-help

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Strange output daply with empty strata
Jan van der Laan · Sep 9, 2010 · r-help

> > This is a bug, which I've fixed in the development version (hopefully > to be released next week). > In the plyr 1.2: > OK, thank you both for your answers. I'll wait for the next version. Regards, Jan

Plots not showing up in the RStudio plot pane
Jan van der Laan · Feb 27, 2022 · r-help

R-studio might not support your R-version. In that case the R-studio graphics device does not work and it uses the default device from R which results in a new window. However, this is usually accompanied with a...

Alternative for wildcard gnu extension in Makevars
Jan van der Laan · May 13, 2015 · r-devel

I have some cpp-files from another library (boost) in a subdirectory in my src directory (src/boost_src). I include these using the following two lines in my Makevars: SOURCES = $(wildcard *.cpp boost_src/*.cpp) OBJECTS = $(SOURCES:.cpp=.o...

Sequence generation in a table
Jan van der Laan · Dec 9, 2010 · r-help

Vincy, I suppose the following does what you want. yy is now a list which allows for differing lengths of the vectors. > yy <- lapply(c(257, 520, 110), seq, to=0, by=-100) > yy[[1]] [1] 257 157 57 > yy...

complexity of operations in R
Jan van der Laan · Jul 19, 2012 · r-help

On 07/19/2012 05:50 PM, Hadley Wickham wrote: > On Thu, Jul 19, 2012 at 8:02 AM, Jan van der Laan <rhelp at eoos.dds.nl> wrote: >> The following function is faster than your g and easier to...

Plotrix Trick
Jan van der Laan · Jun 24, 2010 · r-help

Lorenzo, You can also use a custom colorscale using color.scale and the cellcolors option of color2D.matplot: pdf("test_color_scale_logcolor.pdf") oldpar<-par( mar = c(4.5,5, 2, 1) + 0.1, cex.axis=1.4,cex...

Large vector support in data.frames
Jan van der Laan · Jun 19, 2024 · r-devel

What is the status of supporting long vectors in data.frames (e.g. data.frames with more than 2^31 records)? Is this something that is being worked on? Is there a time line for this? Is this something I...

Practical work with logistic regression
Jan van der Laan · Apr 23, 2010 · r-help

When you just want to calculate the probability of belong to class A or B of a new observation xi and do not have to do any new model estimations or other analyses, the easiest way is probably to write...

[R-pkg-devel] Indicate dependency on kitty in DESCRIPTION
Jan van der Laan · Jul 7, 2025 · r-package-devel

I have a package, which I am thinking to submit to CRAN. It can output graphics/plots to the kitty terminal (https://sw.kovidgoyal.net/kitty/). However, I am not sure if and how I should indicate the dependency on...

Comma separators in r console output
Jan van der Laan · Feb 21, 2022 · r-help

See `format`, `formatC` or `prettyNum`. The last one is used by `format.default`. For example > format(1E6, big.mark=',', scientific = FALSE) [1] "1,000,000" Is this what you are looking for? Jan On 21-02-2022 12:16, Charles...

Regarding Issue Running Parallel Computing on Linux RHEL version 8
Jan van der Laan · Jan 14, 2025 · r-help

On 1/14/25 10:07, akshay kulkarni wrote: > dear Ivan, > THe present problem had been encountered by me also about 1 and a half years ago. You had solved the issue then. Can't we search this mail list...

Running other programs from R
Jan van der Laan · Mar 16, 2013 · r-help

Have a look at the system command: ?system HTH, Jan On 03/16/2013 10:09 PM, Sedat Sen wrote: > Dear list, > > I want to run a statistical program (using its .exe file) from R by > writing a script. I...

[Rcpp-devel] Passing pointers to objects between libs results in weird UBSAN warning
Jan van der Laan · Aug 20, 2018 · rcpp-devel

Hi Dirk, The suggestion of I?aki has been changed in the github code and also the visitor stuff is not needed to trigger the exception. On 20-08-18 16:01, Dirk Eddelbuettel wrote: > > The only thought I had...

How to use character in C code?
Jan van der Laan · May 16, 2013 · r-help

Characters in R are zero terminated (although I couldn't find that in the R extensions manual). So, you could use: void dealWithCharacter(char **chaine, int *size){ Rprintf("The string is '%s'\n", chaine[0]); } Jan On 05/10/2013...

Calculating just a single row of dissimilarity/distance matrix
Jan van der Laan · Oct 26, 2018 · r-help

Using another implementation of the gower distance: library(gower) gower_dist(iris[1,], iris) HTH, Jan On 26-10-18 15:07, Aerenbkts bkts wrote: > I have a data-frame with 30k rows and 10 features. I would like to...

can not read table in dbReadTable
Jan van der Laan · Nov 2, 2012 · r-help

I suspect it should be my.data.copy <- dbReadTable(con, "week42") (with con instead of tbs as first argument) Jan Tammy Ma <metal_licaling at live.com> schreef: >> tbs<-dbListTables(con) >> >> tbs > [1] "lowend" "time" "week30" "week33" "week39" "week42" > >> my...

Ranking submodels by AIC (more general question)
Jan van der Laan · Jun 23, 2011 · r-help

Alexandra, Have a look at add1 and drop1. Regards, Jan On 06/23/2011 07:32 PM, Alexandra Thorn wrote: > Here's a more general question following up on the specific question I > asked earlier: > > Can anybody recommend an R...

Not generating line chart
Jan van der Laan · Jan 19, 2012 · r-help

Devarayalu, This is FAQ 7.22: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f use print(qplot(....)) Regards, Jan Sri krishna Devarayalu Balanagu <balanagudevarayulu at gvkbio.com> schreef: > Hi All...

Documenting variables, dataframes and files?
Jan van der Laan · Jun 22, 2011 · r-help

The memisc package also offers functionality for documenting data. Jan On 06/22/2011 04:57 PM, Robert Lundqvist wrote: > Every now and then I realize that my attempts to document what all dataframes consist of are unsufficient. So far...

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