On Fri, May 9, 2014 at 10:42 PM, Hadley Wickham h.wick...@gmail.com wrote:
Beware of the is.* functions:
* is.object() does not test the usual definition of objects
* is.vector() does not test the usual definition of vectors
* is.numeric() does not work the same way as is.character() or
On 10/05/2014, 6:46 AM, Barry Rowlingson wrote:
On Fri, May 9, 2014 at 10:42 PM, Hadley Wickham h.wick...@gmail.com wrote:
Beware of the is.* functions:
* is.object() does not test the usual definition of objects
* is.vector() does not test the usual definition of vectors
* is.numeric() does
On 10 May 2014, at 12:54 , Duncan Murdoch murdoch.dun...@gmail.com wrote:
On 10/05/2014, 6:46 AM, Barry Rowlingson wrote:
On Fri, May 9, 2014 at 10:42 PM, Hadley Wickham h.wick...@gmail.com wrote:
Beware of the is.* functions:
* is.object() does not test the usual definition of objects
*
On May 10, 2014, at 3:54 AM, Duncan Murdoch wrote:
On 10/05/2014, 6:46 AM, Barry Rowlingson wrote:
On Fri, May 9, 2014 at 10:42 PM, Hadley Wickham h.wick...@gmail.com wrote:
Beware of the is.* functions:
* is.object() does not test the usual definition of objects
* is.vector() does not
Spencer:
Hmmm
Well, I don't get what's going on here -- as.character.default is
internal -- but could you method-ize a simple synonym:
asChar- function(e,...)UseMethod(asChar)
asChar.call - function(e,...)deparse(e,...)
asChar.default - function(e,...)as.character(e,...)
asChar(xDy)
[1]
On 09/05/2014, 2:41 AM, Bert Gunter wrote:
Spencer:
Hmmm
Well, I don't get what's going on here -- as.character.default is
internal -- but could you method-ize a simple synonym:
See ?InternalMethods:
For efficiency, internal dispatch only occurs on objects, that is those
for which
Ahhh. Thanks Duncan.
-- Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom.
H. Gilbert Welch
On Fri, May 9, 2014 at 2:41 AM, Duncan Murdoch murdoch.dun...@gmail.com wrote:
On
Hi, Duncan:
Thanks very much. I used to think that everything in R was a
object. Now I know that is.object(quote(x)) is FALSE. (A decade ago,
S-Plus asked me if I wanted to save changes to history. I thought,
Wow! Do I get to change history?
Hadley's Advanced R book
Beware of the is.* functions:
* is.object() does not test the usual definition of objects
* is.vector() does not test the usual definition of vectors
* is.numeric() does not work the same way as is.character() or is.integer()
* is.Date() doesn't exist
* is.nan() doesn't return TRUE for some NaNs
Dear Hadley:
Thanks for that. Digits are not numbers. Numbers are not data.
Data is not information. Information is not intelligence. Intelligence
is not knowledge. Knowledge is not wisdom. And your is. warnings are
more useful than my trivia here.
Spencer
On 5/9/2014
as.character.call seems not to work as an alias for deparse.
Consider the following:
xDy - quote(x$y)
class(xDy)
call
as.character.call - function(x, ...)deparse(x, ...)
as.character(xDy)
[1] $ x y
# fails
str(xDy)
# language x$y
as.character.language - function(x, ...)language
[1] x$y
Spencer:
Does
deparse(substitute(x$y))
[1] x$y
do what you want?
Cheers,
Bert
-- Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom.
H. Gilbert Welch
On Thu, May
On 5/8/2014 8:05 PM, Bert Gunter wrote:
[1] x$y
Spencer:
Does
deparse(substitute(x$y))
[1] x$y
do what you want?
No: The problem is methods dispatch. class(quote(x$y)) =
'call', but as.character(quote(x$y)) does NOT go to as.character.call.
deparse(quote(x$y)) returns
Hello, All:
Is there a simple utility someplace to convert quote(x$y) to
x$y?
I ask, because as.character(quote(x$y)) is a character vector of
length 3 = $ x y. I want to convert this to x$y for a
diagnostic message.
class(quote(x$y)) = call, which suggests I could
deparse(quote(x$y))
[1] x$y
On Wed, May 7, 2014 at 5:23 PM, Spencer Graves
spencer.gra...@structuremonitoring.com wrote:
Hello, All:
Is there a simple utility someplace to convert quote(x$y) to x$y?
I ask, because as.character(quote(x$y)) is a character vector of
length 3 =
deparse(quote(x$y))
[1] x$y
It looks like deparse does what you want here.
On Wed, May 7, 2014 at 3:23 PM, Spencer Graves
spencer.gra...@structuremonitoring.com wrote:
Hello, All:
Is there a simple utility someplace to convert quote(x$y) to x$y?
I ask, because
... and
str(quote(x$y))
language x$y
as.list(quote(x$y))
[[1]]
`$`
[[2]]
x
[[3]]
y
## may be instructive.
Cheers,
Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom.
H.
Thanks for the quick replies from Richard Heiberger, Greg Show
Bert Gunter.
Might it make sense to create as.character.call as an alias for
deparse?
A few years ago, I wrote several functions like predict.fd as
aliases for functions with less memorable names like
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