On Feb 3, 2015, at 7:14 AM, Duncan Murdoch wrote:
> On 03/02/2015 9:43 AM, keith.jew...@campdenbri.co.uk wrote:
>> Dear all,
>>
>> I am using writeWebGL to create an HTML page containing an interactive 3D
>> plot. It works fine with the default prefix="" but fails when I specify a
>> prefix "for different scenes displayed on the same web page" (quoting
>> ?writeWebGL). I'm sure I'm misreading the help, and would appreciate
>> guidance.
>>
>> Briefly, it works fine with the default writeWebGL( ,prefix="", ) and the
>> template containing %WebGL%
>> I have not been able to make it work with any other value of prefix; e.g.
>> writeWebGL( ,prefix="A",) and the template containing %AWebGL%
>>
>> Here is code illustrating the problem.
>>
>> First create three templates:
>> a) Vanilla: copied system.file(file.path("WebGL", "template.html"),
>> package="rgl") to file.path(getwd(), "template.html")
>>
>> b) First attempt: ?writeWebGL says # "[the template] should contain a single
>> line containing paste("%", prefix, "WebGL%"), e.g. %WebGL% with the default
>> empty prefix"
>> paste("%", "A", "WebGL%")
>> # [1] "% A WebGL%"
>> so file.path(getwd(), "templateA.html") is a copy of (a) replacing %WebGL%
>> with % A WebGL%
>>
>> c) Second attempt: file.path(getwd(), "templateB.html") is a copy of (a)
>> replacing %WebGL% with %AWebGL%
>>
>> then, in R
>> #-----------
>> library(rgl)
>> plot3d(1:5, 1:5, 1:5) # generate rgl scene
>> #-----------
>> # a) vanilla
>> writeWebGL(dir=getwd(), template = file.path(getwd(), "template.html"),
>> prefix="")
>> # works OK; result opens and works in IE
>> #----------------
>> # b) First attempt, my reading of ?writeWebGL
>> writeWebGL(dir=getwd(), template = file.path(getwd(), "templateA.html"),
>> prefix="A")
>> # Error in writeWebGL(dir = getwd(), template = file.path(getwd(),
>> "templateA.html"), :
>> # template ‘m://templateA.html’ does not contain
>> %AWebGL%
>> # so it looks as if the help is trivially wrong, it should be paste0
>> paste0("%", "A", "WebGL%")
>
> Yes, that's right. I'll fix it.
>
>> # [1] "%AWebGL%"
>> #----------------
>> # c) second attempt using %AWebGL%
>> writeWebGL(dir=getwd(), template = file.path(getwd(), "templateB.html"),
>> prefix="A")
>> # runs without error in R but IE displays "You must enable Javascript to
>> view this page properly."
>> #--------------
>>
>> I don't understand why (c) is different from (a).
>
> There may be an error in the generated Javascript. In Firefox, you could ask
> to see the browser console log, and it would report if there was an error on
> the page; sometimes those make the Javascript fail, and it falls back to the
> error message you saw. I don't know how/if you can do that in IE.
>
>
>>
>> Here are the system details:
>>
>> R version 3.1.0 (2014-04-10)
>> Platform: i386-w64-mingw32/i386 (32-bit)
>>
>> locale:
>> [1] LC_COLLATE=English_United Kingdom.1252
>> [2] LC_CTYPE=English_United Kingdom.1252
>> [3] LC_MONETARY=English_United Kingdom.1252
>> [4] LC_NUMERIC=C
>> [5] LC_TIME=English_United Kingdom.1252
>>
>> attached base packages:
>> [1] grDevices datasets splines graphics stats tcltk utils
>> [8] tools methods base
>>
>> other attached packages:
>> [1] knitr_1.8 animation_2.3 rgl_0.95.1158 CBRIutils_1.0
>
> That's an old version of rgl; current on CRAN is 0.95.1201.
> <http://cran.r-project.org/src/contrib/rgl_0.95.1201.tar.gz> (CRAN OSX
> currently has an old binary; I don't recommend that you use it. I don't know
> why they haven't updated to the current one.)
I'm not sure why either, but that newer package does fail compilation on both
trunks of the Mac platform. I have version 1098 on my OSX 10.7.5 box (and I'm
pretty sure that's the one on my Yosemite-equiped laptop. I just tried
compiling from source on the Lion platform with the source at CRAN and it fails
there, too. (Sometimes I am able to get packages to compile that report errors
on CRAN.)
The first error reported from efforts at installing both 1201 and 1208 versions
is:
checking for X... libraries , headers
checking for glEnd in -lGL... no
configure: error: missing required library GL
--
David.
> r-forge has even newer versions, but I'm in the middle of some changes there,
> so I don't recommend using that version right now.
>
> Duncan Murdoch
> <http://cran.r-project.org/src/contrib/rgl_0.95.1201.tar.gz>
>> [5] stringr_0.6.2 svSocket_0.9-55 TinnR_1.0-5 R2HTML_2.3.1
>> [9] Hmisc_3.12-2 Formula_1.1-1 survival_2.37-7
>>
>> loaded via a namespace (and not attached):
>> [1] cluster_1.15.3 devtools_1.6.1 evaluate_0.5.5 formatR_1.0
>> [5] grid_3.1.0 highr_0.4 lattice_0.20-29 rpart_4.1-8
>> [9] svMisc_0.9-70
>>
>> Internet Explorer 11 Version 11.0.9600.17420
>>
>> Any advice is welcome.
>>
>>
>> Keith Jewell - Statistician
snipped footers ---
David Winsemius
Alameda, CA, USA
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