[R-pkg-devel] finding "logo.jpg" [was: "try" malfunctions on Ubuntu Linux 16.04 LTS, R-release, GCC]
????? Thanks to I?aki Ucar for identifying a second error that
explained why I still got an error after wrapping one in "try".
????? That still leaves a question of how to find a file like
"logo.jpg" in a platform independant way.
??? ? The following had worked for several years and now broke on rhub
"Ubuntu Linux 16.04 LTS, R-release, GCC" but not on several other
computers I tried:
??? ??????? logo.jpg <- paste(R.home(), "doc", "html", "logo.jpg", sep
= .Platform$file.sep)
????? On that Ubuntu platform, "readJPEG(logo.jpg)" stopped with "Error
in readJPEG(logo.jpg) : unable to open /usr/lib/R/doc/html/logo.jpg".
????? I replaced the above "paste" with the following:
RdocDir <- dir(R.home(), pattern='^doc$', full.names = TRUE)
RhtmlDir <- dir(RdocDir, pattern='^html$', full.names=TRUE)
JPGs <- dir(RhtmlDir, pattern='\\\\.jpg$', full.names=TRUE)
if(length(JPGs)>1){
? logoJPG <- paste0(.Platform$file.sep, 'logo.jpg$')
? logo.jpg <- grep(logoJPG, JPGs, value=TRUE)
? if(length(logo.jpg)>1)logo.jpg <- logo.jpg[1]
? if(length(logo.jpg)<1)logo.jpg <- JPGs[1]
} else logo.jpg <- JPGs
if(length(logo.jpg)<1){
? cat('logo.jpg not found.\n')
? print(R.home())
? print(dir(RdocDir))
? print(dir(RhtmlDir))
? if(!fda::CRAN())stop('logo.jpg not found')
} else {
# length(logo.jpg)==1 so continue:
? if(require(jpeg)){
##
## 1.? Shrink as required
##
??? Rlogo <- readJPEG(logo.jpg)
...
??? ? This gave me no error message, which I believe means that either
length(logo.jpg) == 1 or fda::CRAN() returns TRUE.? Sadly, I could not
find the standard test file to see which of these is the case.
????? I should proceed to submit the current Ecfun package to CRAN.
Then I might modify this test sequence to force an error, so I can see
more what is happening.
????? Suggestions?
????? Thanks,
????? Spencer
On 2020-02-03 03:06, I?aki Ucar wrote:
On Mon, 3 Feb 2020 at 03:16, Spencer Graves <spencer.graves at effectivedefense.org> wrote:
Hello, All:
devtools::check_rhub failed to trap an error wrapped in "try",
per the email below. This came from running
devtools::check_rhub(Ecfun_dir), where Ecfun_dir = the path to a copy of
"https://github.com/sbgraves237/Ecfun".
That's improbable.
This is the development version of Ecfun, which I want to submit
to CRAN as soon as I can do so without offending the sensibilities of
the overworked CRAN maintainers.
Suggestions?
Thanks,
Spencer Graves
-------- Forwarded Message --------
Subject: Ecfun 0.2-2: ERROR
Date: Sun, 02 Feb 2020 23:27:10 +0000
From: R-hub builder <support at rhub.io>
To: spencer.graves at effectivedefense.org
<snip>
## 2.9. A more complicated example with elements to eval ## logo.jpg <- paste(R.home(), "doc", "html", "logo.jpg",
+ sep = .Platform$file.sep)
if(require(jpeg)){
+ Rlogo <- try(readJPEG(logo.jpg))
+ if(!inherits(Rlogo, 'try-error')){
+ # argument list for a call to rasterImage or rasterImageAdj
+ RlogoLoc <- list(image=Rlogo,
+ xleft.0 = c(NZ=176.5,CH=172,US=171,
+ CN=177,RU= 9.5,UK= 8),
+ xleft.1 = c(NZ=176.5,CH= 9,US=-73.5,
+ CN=125,RU= 37, UK= 2),
+ ybottom.0=c(NZ=-37, CH=-34,US=-34,
+ CN=-33,RU= 48, UK=47),
+ ybottom.1=c(NZ=-37, CH= 47,US= 46,
+ CN= 32,RU=55.6,UK=55),
+ xright=quote(xleft+xinch(0.6)),
+ ytop = quote(ybottom+yinch(0.6)),
+ angle.0 =0,
+ angle.1 =c(NZ=0,CH=3*360,US=5*360,
+ CN=2*360,RU=360,UK=360)
+ )
+
+ RlogoInterp <- interpPairs(RlogoLoc,
+ .proportion=rep(c(0, -1), c(2, 4)) )
+ # check
+ ## Don't show:
+ stopifnot(
+ ## End(Don't show)
+ all.equal(names(RlogoInterp),
+ c('image', 'xright', 'ytop', 'xleft', 'ybottom', 'angle'))
+ ## Don't show:
+ )
+ ## End(Don't show)
+ }
+ # NOTE: 'xleft', and 'ybottom' were created in interpPairs,
+ # and therefore come after 'xright' and 'ytop', which were
+ # already there.
+
+ ##
+ ## 2.10. using envir
+ ##
+ RlogoDiag <- list(x0=quote(Rlogo.$xleft),
+ y0=quote(Rlogo.$ybottom),
+ x1=quote(Rlogo.$xright),
+ y1=quote(Rlogo.$ytop) )
+
+ RlogoD <- interpPairs(RlogoDiag, .p=1,
+ envir=list(Rlogo.=RlogoInterp) )
+ ## Don't show:
+ stopifnot(
+ ## End(Don't show)
+ all.equal(RlogoD, RlogoDiag)
+ ## Don't show:
+ )
+ ## End(Don't show)
+ }
Loading required package: jpeg
Error in readJPEG(logo.jpg) : unable to open /usr/lib/R/doc/html/logo.jpg
Error in interpPairs.list(RlogoDiag, .p = 1, envir = list(Rlogo. = RlogoInterp)) :
object 'RlogoInterp' not found
Calls: interpPairs -> interpPairs.list
Execution halted
There it is: "Error in interpPairs.list [...] 'RlogoInterp' not found". That's the error, not the "try". You see the error message because you didn't specify "quiet=TRUE", but that doesn't mean that R is failing to catch the error. So the second error is the one that fails. I?aki