Displaying 20 results from an estimated 2000 matches similar to: "RMySQL: Slower parsing over time with htmlTreeParse()"
2010 Mar 15
1
XML: Slower parsing over time with htmlTreeParse()
Sorry, I listed the wrong package in the header of my previous post!
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Dear List,
has anyone of you experienced a significant increase in the time it takes to
parse an URL via "htmlTreeParse()" when this function is called
2008 Nov 04
2
How to suppress errors from htmlTreeParse() function in XML package?
Dear R-help,
The following code downloads an html document into variable 'doc' and
then stores an internal representation into variable 'html.tree'. Even
if the html code is malformed, this still works which is fantastic.
However, as in the example below, i do get some ouput from R in the
console which i would like to suppress somehow, so i can keep my
window a bit cleaner.
I
2012 Feb 10
1
Bug with memory allocation when loading Rdata files iteratively?
Dear list,
when iterating over a set of Rdata files that are loaded, analyzed and
then removed from memory again, I experience a *significant* increase in
an R process' memory consumption (killing the process eventually).
It just seems like removing the object via |rm()| and firing |gc()| do
not have any effect, so the memory consumption of each loaded R object
cumulates until
2010 Aug 17
4
Problems building own package (Error: "package has been build before R-2.10.0")
Dear List,
I’m doing my first baby steps towards developing own R Packages and ran into
the following problem:
R CMD check mypackage works fine (no errors, no warnings)
R CMD build mypackage works fine (no errors, no warnings)
R CMD INSTALL –library=”C:\R\R-2.11.1\library”
“something\mypackage\mypackage_1.0.tar.gz” works fine (no errors, no
warnings)
However, when I try loading the
2010 Aug 17
4
Problems building own package (Error: "package has been build before R-2.10.0")
Dear List,
I’m doing my first baby steps towards developing own R Packages and ran into
the following problem:
R CMD check mypackage works fine (no errors, no warnings)
R CMD build mypackage works fine (no errors, no warnings)
R CMD INSTALL –library=”C:\R\R-2.11.1\library”
“something\mypackage\mypackage_1.0.tar.gz” works fine (no errors, no
warnings)
However, when I try loading the
2011 May 19
0
Flattening lists and environments (was: "how to flatten a list to the same level?")
Dear list,
I came up with a two functions that flatten arbitrary deeply nested
lists (as long as they're named; not tested for unnamed) and
environments (see attachment; 'flatten_examples.txt' contains some
examples).
The paradigm is somewhat similar to that implemented in 'unlist()', yet
extends it. I would have very much liked to build upon the superfast
functionality
2011 May 19
1
Feature request: extend functionality of 'unlist()' by args 'delim=c("/", "_", etc.)' and 'keep.special=TRUE/FALSE'
Dear list,
I hope this is the right place to post a feature request. If there's
exists a more formal channel (e.g. as for bug reports), I'd appreciate a
pointer.
I work a lot with named nested lists with arbitrary degrees of
"nestedness". In order to retrieve the names and/or values of "bottom
layer/bottom tier", I love the functionality of 'unlist()', or
2011 Jun 03
2
Bug or feature: using "ANY" as a generic field class (was: '[R] Is there a (virtual) class that all R objects inherit from?)
Dear list,
I was wondering if you could help me out in clarifying something:
Is it possible to use class "ANY" in slots/fields of formal classes if you
a) do not want to restrict valid classes of that field and
b) if you are making explicit use of class inheritance?
It seems to work in simple scenarios but produces errors when class
inheritance comes into play. So I was
2012 Jun 08
0
XML htmlTreeParse fails with no obvious error
Hi all,
Sorry for the rather uninformative subject, but the error I get is not very informative either.
When using the XML and RCurl package to retrieve the content of an html page, htmlTreeParse fails, printing out the beginning of the HTML:
Error in htmlTreeParse(getURL(url)) :
File <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
2010 Nov 04
2
Roxygen: @example tag does not work for me
Dear list,
somehow I can't get the Roxygen tag "@example" to work for me.
My "Roxygen-Header" of a script containing, say, a function looks like this:
#' My header
#'
#' My description
#'
#' @param a Blabla.
#' @param b Blabla.
#' @return \code{TRUE}.
#' @callGraphPrimitives
#' @references
#'
2010 Jan 15
1
Can an object reference itself?
Dear List,
I am not really familiar with any other language than R, but I?ve heard that
in other languages there is something called ?self referencing?.
Here?s what I?m trying to get an answer for:
Suppose there is a function that takes as its input a value of a slot of an
S4 object. The function itself is stored in another slot of the SAME S4
object. Is it then possible to have the function
2010 Nov 17
0
WG: Reference classes: opinion on OOP design
Sorry, never sent an attachment before. I think my .R file didn't pass, so
I'm attaching a .txt instead.
-----Urspr?ngliche Nachricht-----
Von: Janko Thyson [mailto:janko.thyson at ku-eichstaett.de]
Gesendet: Mittwoch, 17. November 2010 19:56
An: 'r-devel at r-project. org'
Betreff: Reference classes: opinion on OOP design
Dear list,
I?m aware that this post does not really
2010 Sep 03
2
Stats not loaded? Method for as.ts() results in error
Dear list,
I've got the following problem:
In a package I'm trying to build, there exists a method for the function
"as.ts()". When checking the package, R always throws the error that it
cannot find a function called "as.ts". To me it seems that the package
"stats" (home of "as.ts()") is not loaded during the checking process even
though
2009 Dec 31
3
XML and RCurl: problem with encoding (htmlTreeParse)
Hi,
I'm trying to get data from web page and modify it in R. I have a
problem with encoding. I'm not able to get
encoding right in htmlTreeParse command. See below
> library(RCurl)
> library(XML)
>
> site <- getURL("http://www.aarresaari.net/jobboard/jobs.html")
> txt <- readLines(tc <- textConnection(site)); close(tc)
> txt <- htmlTreeParse(txt,
2010 Nov 21
1
reference classes: question on inheritance
Dear list,
I have a reference class which should act as a "generic" superclass for
other classes. I've read the respective section at ?setRefClass and put the
name of the superclass to the 'contains' argument of an example subclass
(see class defs below). Classnames are set in a way that shouldn't result in
collation issues (virtual def sourced before superclass def
2010 Nov 04
1
[Roxygen-devel] Roxygen: @example tag does not work for me
> -----Urspr?ngliche Nachricht-----
> Von: roxygen-devel-bounces at lists.r-forge.r-project.org [mailto:roxygen-
> devel-bounces at lists.r-forge.r-project.org] Im Auftrag von Vinh Nguyen
> Gesendet: Donnerstag, 4. November 2010 04:04
> An: roxygen-devel at r-forge.wu-wien.ac.at
> Betreff: Re: [Roxygen-devel] Roxygen: @example tag does not work for me
>
> Try @examples
2010 Nov 15
1
Create NAMESPACE file as 'package.skeleton()' would do
Hi there,
is there a way to create a NAMESPACE file based on Rd-files (or whatever is
needed in order to apply the regular expression "^[[:alpha:]]+" without(!)
resorting to package.skeleton() (as this kind of interferes with
roxygenize() pretty often)?
Thanks a lot,
Janko
[[alternative HTML version deleted]]
2011 Aug 25
1
R hangs after htmlTreeParse
Dear colleagues,
I'm trying to parse the html content from this webpage:
2010 Nov 17
2
Reference classes: accessor functions via 'getRefClass(...)$accessors(...)'
Hi there,
I''d like to choose between an "static" and "dynamic" access of a reference
class field, say ''a''.
myObj <- getRefClass("Blabla")$new()
Static: myObj$a
Dynamic: myObj$a.get() where the function retrieves the data
from a database (or some other location), stores it to a buffer and
2010 Nov 23
1
Reference Classes: removing methods -> implications for objects/instances of that class
Dear list,
just to make sure that I understand 'unregistering' methods for S4 reference
classes correctly:
If I registered a method and want to 'unregister' (i.e. remove) this method
again, objects/instance created of the respective class still feature the
removed method until I do an explicit reassign ('my.instance <-
getRefClass("Classname")$new()'), right?