'eval' is used in optim.c, but it is used along with other things. I'm
looking for a standalone example to demonstrate the usage of eval in
C. Does anybody have some a simple example? Thanks.
--
Regards,
Peng
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On Sat, Jan 9, 2010 at 3:03 PM, Romain Francois
wrote:
> On 01/09/2010 09:53 PM, Peng Yu wrote:
>>
>> Could somebody let me know if there is nested name space supported?
>> For example, is it possible to define a function in the name space
>> 'nested_namespace&#x
Could somebody let me know if there is nested name space supported?
For example, is it possible to define a function in the name space
'nested_namespace' which is nested in the name space 'some_namespace'?
some_namespace:::nested_namespace:::a_function()
I checked Section 1.6 of R-exts.pdf. It se
On Fri, Jan 1, 2010 at 6:52 AM, Barry Rowlingson
wrote:
> On Thu, Dec 31, 2009 at 11:27 PM, Peng Yu wrote:
>> I don't see where describes the implementation of '[]'.
>>
>> For example, if x is a matrix or a data.frame, how the lookup of
>> 'colname1
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame, how the lookup of
'colname1' is x[, 'colname1'] executed. Does R perform a lookup in the
a hash of the colnames? Is the reference O(1) or O(n), where n is the
second dim of x?
__
e any problems navigating
> them (with appropriate tool support). Just how many files do you
> have?
>
> Hadley
>
> On Thu, Dec 10, 2009 at 3:56 PM, Peng Yu wrote:
>> I'm making a package, Current, I put all R files in the R/ directory
>> in the package (without usi
I'm making a package, Current, I put all R files in the R/ directory
in the package (without using subdirectory). This will become a
problem when there are many files in the directory. I'm wondering how
to use subdirectories in R/?
Does 'R CMD INSTALL' install the files in the subdirectories autom
I want to see some working examples on how to call C++ programs from
R. Could somebody let me know which R packages mainly use C++ rather
than C or Fortran?
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It will be convenient to add section number to the bookmarks of R
documents that are in pdf format. Could somebody take some time add
the sections number?
Writing R Extensions
R Data Import/Export
R Language Definition
etc.
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R-devel@r-project.org mai
In an R session, I see the following, which means that findInterval is
an R function.
> findInterval
function (x, vec, rightmost.closed = FALSE, all.inside = FALSE)
{
if (any(is.na(vec)))
stop("'vec' contains NAs")
if (is.unsorted(vec))
stop("'vec' must be sorted non-decrea
I make a version for matrix. Because, it would be more efficient to
split each column of a matrix than to convert a matrix to a data.frame
then call split() on the data.frame. Note that the version for a
matrix and a data.frame is slightly different. Would somebody add this
in R as well?
split.mat
On Wed, Dec 9, 2009 at 5:44 PM, Charles C. Berry wrote:
> On Wed, 9 Dec 2009, William Dunlap wrote:
>
>> Here are some differences between the current and proposed
>> split.data.frame.
>
> Adding 'drop=FALSE' fixes this case. See in line correction below.
Thank you for the correction.
>>> d<-dat
On Sun, Nov 29, 2009 at 11:18 AM, Duncan Murdoch wrote:
> On 29/11/2009 11:50 AM, Peng Yu wrote:
>>
>> On Sun, Nov 29, 2009 at 10:40 AM, Duncan Murdoch
>> wrote:
>>>
>>> On 29/11/2009 10:58 AM, Peng Yu wrote:
>>>>
>>>> Some l
2009/12/2 Uwe Ligges :
>
>
> Peng Yu wrote:
>>
>> Suppose I run the following code in the R session. At the last prompt
>> '>', I want to retrieve the second command (staring with 'y'). But I
>> have to type up arrow many times, which is
there are more or
> less regular checks for events such as this one.
> If you are using some contributed package, it may be an issue in this
> package's source code.
>
> Best wishes,
> Uwe Ligges
>
>
>
>
> Peng Yu wrote:
>>
>> Occasionally, I start
On Sun, Nov 29, 2009 at 10:40 AM, Duncan Murdoch wrote:
> On 29/11/2009 10:58 AM, Peng Yu wrote:
>>
>> Some lines are indented by tabs and some lines are indented by spaces,
>> in R source code. This might due to the fact that the source code is
>> not from a single per
Some lines are indented by tabs and some lines are indented by spaces,
in R source code. This might due to the fact that the source code is
not from a single person. But I think that it is better to enforce a
single convention.
My editor defaults a tab to 8 spaces. So some source doesn't seem to
b
e a tool by yourself to parse the R syntax to
> resolve your problem.
>
> On Tue, Nov 17, 2009 at 11:51 AM, Peng Yu wrote:
>> On Sun, Nov 15, 2009 at 8:45 PM, Peng Yu wrote:
>>> gcc has options like -MM, which can generate the dependence files for
>>> a C/C++ file
On Sun, Nov 15, 2009 at 8:45 PM, Peng Yu wrote:
> gcc has options like -MM, which can generate the dependence files for
> a C/C++ file that I can be used by gnu make. I'm wondering if there is
> a tool that can generate dependence file for an R script.
>
> For example, I hav
her up in config.log
> to see why it's failing -- do you have LD_LIBRARY_PATH setup to match your
> custom location of libs? (Also I notice you are building x86_64 yet the
> readline you are showing is in /lib and not in /lib64 -- did you build it
> just in 32-bit?)
>
> Ch
On Wed, Sep 30, 2009 at 9:58 AM, Simon Urbanek
wrote:
>
> On Sep 30, 2009, at 10:13 , Peng Yu wrote:
>
>> I compiled R-2.9.2 from source on Cent OS. But the compile R program
>> does not support command completion.
>>
>> I get the following configure output
I compiled R-2.9.2 from source on Cent OS. But the compile R program
does not support command completion.
I get the following configure output that is related to readline. Why
'rl_completion_matches' doesn't exist? How should I make R support
command completion?
===
checking readl
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