Re: [R-SIG-Mac] warning on macintosh 2.16 that is not on 2.15.2 or on windows

Fri, 19 Oct 2012 23:18:32 -0700

This is about lattice not using rep() correctly. There is no '2.16' and never will be (see the posting guide). 

From the NEWS for R-devel:

      \item The undocumented use \code{rep(NULL, length.out = n)} for
      \code{n > 0} (which returns \code{NULL}) now gives a warning.
Deepayan is aware of at least some of the uses in lattice, but you could report this one too. 


On 20/10/2012 03:21, Richard M. Heiberger wrote:

mylegend <-
structure(list(bottom = structure(list(fun = "draw.key", args =
structure(list(
     key = structure(list(y = -0.2, x = 0.15, points = structure(list(
         col = c("red", "blue"), pch = c(16, 17)), .Names = c("col",
     "pch")), text = structure(list(c("TREATMENT A (N=216)", "TREATMENT B
(N=431)"
     ), col = c("red", "blue"), cex = 0.9), .Names = c("", "col",
     "cex")), columns = 2, between = 0.5, space = "bottom"), .Names = c("y",
     "x", "points", "text", "columns", "between", "space")), draw = FALSE),
.Names = c("key",
"draw"))), .Names = c("fun", "args"))), .Names = "bottom")


lattice:::evaluate.legend(mylegend)


On Macintosh 2.16
version.string R Under development (unstable) (2012-10-18 r60960)
I get a warning


lattice:::evaluate.legend(mylegend)

$bottom
$bottom$obj
frame[plot_01.key.frame]


Warning messages:
1: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
2: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
3: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
4: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
5: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL




On Macintosh
R version 2.15.2 RC (2012-10-18 r60960)
it works normally

lattice:::evaluate.legend(mylegend)

$bottom
$bottom$obj
frame[.key.frame]







On Windows, it works normally
version.string R version 2.15.1 (2012-06-22)


lattice:::evaluate.legend(mylegend)

$bottom
$bottom$obj
frame[plot_01.key.frame]








This is the Macintosh trace


trace(lattice:::evaluate.legend, exit=recover)

Tracing function "evaluate.legend" in package "lattice
(not-exported)"
[1] "evaluate.legend"

lattice:::evaluate.legend(ae.tr$legend)

Tracing lattice:::evaluate.legend(ae.tr$legend) on exit

Enter a frame number, or 0 to exit

1: lattice:::evaluate.legend(ae.tr$legend)

Selection: 1
Called from: .doTrace(recover(), "on exit")
Browse[1]> ls()
[1] "fun"    "i"      "legend"
Warning messages:
1: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
2: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
3: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
4: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
5: In FUN(X[[9L]], ...) : 'x' is NULL so the result will be NULL
Browse[1]> fun
frame[plot_01.key.frame]
Browse[1]> i
[1] 1
Browse[1]> legend
$bottom
$bottom$obj
frame[plot_01.key.frame]


Browse[1]> Q






This is the Windows trace


trace(lattice:::evaluate.legend, exit=recover)

Tracing function "evaluate.legend" in package "lattice
(not-exported)"
[1] "evaluate.legend"

lattice:::evaluate.legend(ae.tr$legend)

Tracing lattice:::evaluate.legend(ae.tr$legend) on exit

Enter a frame number, or 0 to exit

1: lattice:::evaluate.legend(ae.tr$legend)

Selection: 1
Called from: .doTrace(recover(), "on exit")
Browse[1]> ls()
[1] "fun"    "i"      "legend"
Browse[1]> fun
frame[plot_01.key.frame]
Browse[1]> i
[1] 1
Browse[1]> legend
$bottom
$bottom$obj
frame[plot_01.key.frame]


Browse[1]> Q






On Windows I have
version.string R version 2.15.1 (2012-06-22)

On Macintosh I have
version.string R Under development (unstable) (2012-08-02 r60091)

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--
Brian D. Ripley,                  rip...@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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