Displaying 20 results from an estimated 2000 matches similar to: "mcmapply Core Usage"
2014 Jun 12
1
do.call Error for Function Not Present When Manually Called
Hello,
The e1071 function naiveBayes gives an error when called by do.call, although it doesn't give any error if I call it manually.
Browse[1]> trainParams at classifier
function (x, ...)
UseMethod("naiveBayes")
<environment: namespace:e1071>
Browse[1]> trained <- do.call(trainParams at classifier, paramList)
Error in names(dimnames(tables[[i]])) <- c(Yname,
2013 Oct 04
2
Tab Separated File Reading Error
Hello,
I have a seemingly simple problem that a tab-delimited file can't be read in.
> annoTranscripts <- read.table("matched.txt", sep = '\t', stringsAsFactors = FALSE)
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
line 5933 did not have 12 elements
However, all lines do have 12 columns.
> lines <-
2014 Feb 23
1
Random Count Generation with rnbinom
The documentation states :
An alternative parametrization (often used in ecology) is by the mean ?mu?, and ?size?, the dispersion parameter.
However, this fails :
> rnbinom(10, mu = 100, size = 0)
[1] NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
Warning message:
In rnbinom(10, mu = 100, size = 0) : NAs produced
For dispersion set to 0, it should work like drawing from a Poisson distribution.
2017 Feb 10
3
Grapics Device Resolution Limits
Good day,
Could the documentation of graphics devices give some explanation of how big the bitmap limits are? For example,
> png("Figure1A.png", h = 7, w = 7, res = 1000, units = "cm")
Results in Error: unable to start png() device, but the help page of devices doesn't explain that there are any limits or how they are determined. The wording of the error message could
2018 Jan 30
5
as.list method for by Objects
Good day,
I'd like to suggest the addition of an as.list method for a by object that actually returns a list of class "list". This would make it safer to do type-checking, because is.list also returns TRUE for a data.frame variable and using class(result) == "list" is an alternative that only returns TRUE for lists. It's also confusing initially that
> class(x)
[1]
2018 Feb 01
2
as.list method for by Objects
>>>>> Michael Lawrence <lawrence.michael at gene.com>
>>>>> on Tue, 30 Jan 2018 10:37:38 -0800 writes:
> I agree that it would make sense for the object to have c("by", "list") as
> its class attribute, since the object is known to behave as a list.
Well, but that (list behavior) applies to most non-simple S3
classed
2016 Feb 20
2
R Package Installation Ignores libPaths Setting
Good day,
I believe from the documentation that folders in R_LIBS should appear in the output of .libPaths, but they do not. The documentation contains "The library search path is initialized at startup from the environment variable R_LIBS ..."
However,
$ export R_LIBS=/users/stgrad/dario/tmp/
$ Rscript -e ".libPaths()"
[1] "/dskh/nobackup/biostat/Bioconductor"
2014 Jul 18
1
capture.output on S4 slot
Hello,
capture.output produces a different result if the S4 object was created with a constructor than if the body of the constructor is copied and pasted.
setClass("TransformParams", representation(
transform = "function",
otherParams = "list")
)
setGeneric("TransformParams", function(transform, ...)
{standardGeneric("TransformParams")})
2014 Sep 18
1
Can't Find Function After requireNamespace
I have a simple function :
f <- function()
{
if(requireNamespace("ggplot2"))
qplot(Sepal.Length, Petal.Length, data = iris, color = Species)
else
message("No graphics, just text.")
}
ggplot2 is in the Suggests field of the DESCRIPTION file. When I load the package, and run the function, I get an error :
> f()
Loading required namespace: ggplot2
Error in f()
2014 Oct 07
1
S4 Method Dispatch for Class Defined as Attribute
Hello,
I am writing an interface to some functions from the CRAN package pamr, which is poorly written.
I have a S4 method I declared with setMethod. I'd like to provide a signature of "pamrtrained" which is the class of object that training creates. The last two lines of code of pamr.train are :
class(junk) = "pamrtrained"
junk
How can I dispatch on these kinds
2019 Feb 20
1
Documentation for sd (stats) + suggestion
Good day,
It is implemented by the CRAN package multicon. The function is named popsd. But it does seem like something R should provide without creating a package dependency.
--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia
2017 Feb 10
2
Grapics Device Resolution Limits
Note that there are at least 5 separate png() devices, so Linux was not
using the (default) device used on Windows.
In general, the device-limits info is not on the help page because we do
not know it. On Windows the default device limits depend on the OS
version, 32/64-bit, RAM and the graphics hardware. This sounds like the
last: you were asking for 49 megapixels which is far larger than
2014 Mar 27
2
mclapply Segmentation Fault for Ubuntu
Running the example in the documentation causes R to crash.
dario at bioinfo:~$ R
R version 3.0.3 (2014-03-06) -- "Warm Puppy"
Copyright (C) 2014 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or
2018 Sep 20
3
A different error in sample()
Good day,
The use of "rounding" also doesn't make sense. If The number is halfway between two integers, it is rounded to the nearest even integer.
> round(2.5)
[1] 2
--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia
2016 Feb 18
2
R Package Installation Ignores libPaths Setting
Good day,
If the library path is changed with .libPaths, the command
install.packages("/nb/dario/Biostrings_2.39.9.tar.gz", repos=NULL)
fails with
** testing if installed package can be loaded
Error : package ?S4Vectors? required by ?Biostrings? could not be found
However,
running library(S4Vectors) followed by sessionInfo() after the error shows that the package can indeed be
2018 Jun 14
2
makeCluster Stall on 32-bit Windows
Good day,
I'm trying the example cl <- makeCluster(2, type = "SOCK") from the makeCluster documentation and the R command prompt never returns. I am using a 32-bit Windows 10 computer. The problem doesn't happen on another 64-bit Windows 10 computer but does happen on another 32-bit Windows 7 computer. Can anyone reproduce it? Are there any other options that can be passed to
2015 Dec 30
2
Default R Font Changed After Upgrade to Debian 8
Good day,
I have been unable to solve this issue. Do you get grainy fonts when running the test case
plot(1:10, main = "abcedfghijklmnopqrstuvwxyz", cex.main = 4, cex.lab = 4, cex.axis = 4)
What version of libcairo is on your system ?
--------------------------------------
Dario Strbenac
PhD Student
University of Sydney
Camperdown NSW 2050
Australia
2018 Feb 08
2
sparse.model.matrix Generates Non-Existent Factor Levels if Ord.factor Columns Present
Good day,
Sometimes, sparse.model.matrix outputs a dgCMatrix which has column names consisting of factor levels that were not in the original dataset. The first factor appears to be correctly transformed, but the following factors don't. For example:
diamonds <- as.data.frame(ggplot2::diamonds)
> colnames(sparse.model.matrix(~ . -1, diamonds))
[1] "carat"
2018 Jul 24
4
Library lib.loc Option Ignored for Dependencies
>>>>> Benjamin Tyner
>>>>> on Sat, 21 Jul 2018 13:42:43 -0400 writes:
> Not sure whether it is the same issue as was raised here:
> https://stat.ethz.ch/pipermail/r-devel/2010-October/058729.html
> but in any case perhaps the problem could partially be remedied on line
> 245 of src/library/base/R/library.R by passing the lib.loc to
2018 Jul 19
2
Library lib.loc Option Ignored for Dependencies
Good day,
If there's a library folder of the latest R packages and a particular package from it is loaded using the lib.loc option, the dependencies of that package are still attempted to be loaded from another folder of older packages specified by R_LIBS, which may cause errors about version requirements not being met. The documentation of the library function doesn't explain what the