Some googling suggests that this is an issue in tcltk which doesn't support png
files with Exif tags. Are you sure this ever worked? This doesn't seem to be
related to the macOS version since it's a feature tcltk, not the system.
I had no issue using the png package, so you could simply remove any offending
chunks with
writePNG("test.png",readPNG("exIf.png", TRUE,TRUE))
then the output work with tcltk.
Cheers,
Simon
> On 12/06/2020, at 1:00 PM, Simon Urbanek <simon.urba...@r-project.org> wrote:
>
> Wayne,
>
> that one is unrelated, but interesting - you can fix it with
>
> sudo install_name_tool -change \
> /usr/local/lib:/opt/X11/lib/libtk8.6.dylib \
> /usr/local/lib/libtk8.6.dylib \
> /usr/local/bin/wish8.6
>
> There is a bug in tcltk with IDs on the libraries which I have worked-around
> for R, but not for wish.
>
> Back to the original question - do you have any example of a file that
> doesn't work so I could test? Exif chunks are fairly rare in PNG and are a
> more late extension so I couldn't find any examples.
>
> Thanks,
> Simon
>
>
>> On 12/06/2020, at 12:24 PM, Wayne Oldford <rwoldf...@uwaterloo.ca> wrote:
>>
>> I don't know what has changed with Catalina
>>
>> But I just tried my tk console from the shell command tkcon
>> And got the following error.
>> Here is my shell:
>>
>> $ tkcon
>>
>> dyld: Library not loaded: /usr/local/lib:/opt/X11/lib/libtk8.6.dylib
>> Referenced from: /usr/local/bin/wish
>> Reason: image not found
>> Abort trap: 6
>>
>>
>> I don't know whether this is a red herring or not, but the
>> Console fails to boot.
>>
>> John does it work for you?
>>
>> Not sure whether Python has the same trouble. Kind of old info at
>> https://www.python.org/download/mac/tcltk/
>>
>>
>>
>>
>> -----Original Message-----
>> From: "Fox, John" <j...@mcmaster.ca>
>> Date: Thursday, June 11, 2020 at 7:54 PM
>> To: Wayne Oldford <rwoldf...@uwaterloo.ca>
>> Cc: Peter Dalgaard <pda...@gmail.com>, "r-devel@r-project.org"
>> <r-devel@r-project.org>
>> Subject: Re: [Rd] tcltk image reading problem (on a mac?): [tcl]
>> encountered an unsupported criticial chunk type "eXIf"
>>
>> Dear Wayne and Peter,
>>
>> FWIW, I observe exactly the same problem in Catalina. The error and my
>> session info:
>>
>> -------- snip --------
>>
>>> tkimage.create("photo", file = fname)
>> Error in structure(.External(.C_dotTclObjv, objv), class = "tclObj") :
>> [tcl] encountered an unsupported criticial chunk type "eXIf".
>>
>>> sessionInfo()
>> R version 4.0.0 (2020-04-24)
>> Platform: x86_64-apple-darwin17.0 (64-bit)
>> Running under: macOS Catalina 10.15.5
>>
>> Matrix products: default
>> BLAS:
>> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
>> LAPACK:
>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
>>
>> locale:
>> [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
>>
>> attached base packages:
>> [1] tcltk stats graphics grDevices utils datasets methods
>> base
>>
>> loaded via a namespace (and not attached):
>> [1] compiler_4.0.0 tools_4.0.0
>>
>> -------- snip --------
>>
>> This is from RStudio but I see the same thing in the R.app.
>>
>> I hope this is of some help,
>> John
>>
>> -----------------------------
>> John Fox, Professor Emeritus
>> McMaster University
>> Hamilton, Ontario, Canada
>> Web: http::/socserv.mcmaster.ca/jfox
>>
>>> On Jun 11, 2020, at 6:43 PM, Wayne Oldford <rwoldf...@uwaterloo.ca> wrote:
>>>
>>> Yes.
>>> I seem to be picking up
>>> <Tcl> 8.6
>>> I should have noted that.
>>>
>>> Use to work for me too in Mojave.
>>> I have the sneaky feeling that Catalina is the problem.
>>>
>>> R. W. Oldford
>>>
>>> https://math.uwaterloo.ca/~rwoldfor
>>>
>>> ________________________________
>>> From: Peter Dalgaard <pda...@gmail.com>
>>> Sent: Thursday, June 11, 2020 5:56:15 PM
>>> To: Wayne Oldford <rwoldf...@uwaterloo.ca>
>>> Cc: r-devel@r-project.org <r-devel@r-project.org>
>>> Subject: Re: [Rd] tcltk image reading problem (on a mac?): [tcl]
>>> encountered an unsupported criticial chunk type "eXIf"
>>>
>>> Happy enough for me on Mojave.
>>>
>>> On the off chance that you are picking up an old Tcl, do you see this?
>>>
>>>> tcl("info","tclversion")
>>> <Tcl> 8.6
>>>
>>>
>>> -pd
>>>
>>>> On 11 Jun 2020, at 23:04 , Wayne Oldford <rwoldf...@uwaterloo.ca> wrote:
>>>>
>>>> Hello everyone
>>>>
>>>> I am not sure when this appeared
>>>> (sometime post R 3.5.0 and after I switched to Mac OS Catalina).
>>>>
>>>> I do not think it happens on all platforms (e.g. seems to work on windows).
>>>>
>>>> But it seems that
>>>>
>>>> tkimage.create()
>>>>
>>>> no longer works on a Mac for all png files.
>>>>
>>>>
>>>> (It does work for *some* old png files I have on disk but I have not been
>>>> able to determine what is different about the ones that work)
>>>>
>>>> Any help would be appreciated.
>>>>
>>>> - Wayne
>>>>
>>>>
>>>> R.W. Oldford
>>>> math.uwaterloo.ca/~rwoldfor
>>>>
>>>>
>>>>
>>>>
>>>>> library(tcltk)
>>>>
>>>>> fname <- "Rplot.png"
>>>>> png(filename = fname, width = 500, height = 500)
>>>>> hist(rnorm(20))
>>>>> dev.off()
>>>>
>>>>> tkimage.create("photo", file = fname)
>>>>
>>>> Error in structure(.External(.C_dotTclObjv, objv), class = "tclObj") :
>>>> [tcl] encountered an unsupported criticial chunk type "eXIf".
>>>>
>>>>
>>>> ______________________________
>>>>
>>>>> R.version
>>>> _
>>>> platform x86_64-apple-darwin17.0
>>>> arch x86_64
>>>> os darwin17.0
>>>> system x86_64, darwin17.0
>>>> status
>>>> major 4
>>>> minor 0.0
>>>> year 2020
>>>> month 04
>>>> day 24
>>>> svn rev 78286
>>>> language R
>>>> version.string R version 4.0.0 (2020-04-24)
>>>> nickname Arbor Day
>>>>
>>>> ___________________________
>>>>
>>>> macOS Catalina V 10.15.5
>>>>
>>>> ___________________________________________________
>>>>
>>>>
>>>> [[alternative HTML version deleted]]
>>>>
>>>> ______________________________________________
>>>> R-devel@r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>> --
>>> Peter Dalgaard, Professor,
>>> Center for Statistics, Copenhagen Business School
>>> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
>>> Phone: (+45)38153501
>>> Office: A 4.23
>>> Email: pd....@cbs.dk Priv: pda...@gmail.com
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-devel@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
>>
>>
>>
>> ______________________________________________
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