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Wayne Oldford

2020-Jun-11 21:04 UTC

[Rd] tcltk image reading problem (on a mac?): [tcl] encountered an unsupported criticial chunk type "eXIf"

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]]

Peter Dalgaard

2020-Jun-11 21:56 UTC

head link

[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 <rwoldford at 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 at 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.mes at cbs.dk  Priv: PDalgd at gmail.com

Wayne Oldford

2020-Jun-11 22:43 UTC

head link

[Rd] tcltk image reading problem (on a mac?): [tcl] encountered an unsupported criticial chunk type "eXIf"

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 <pdalgd at gmail.com>
Sent: Thursday, June 11, 2020 5:56:15 PM
To: Wayne Oldford <rwoldford at uwaterloo.ca>
Cc: r-devel at r-project.org <r-devel at 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 <rwoldford at 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 at 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.mes at cbs.dk  Priv: PDalgd at gmail.com










	[[alternative HTML version deleted]]

Fox, John

2020-Jun-11 23:54 UTC

head link

[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 <rwoldford at
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 <pdalgd at gmail.com>
> Sent: Thursday, June 11, 2020 5:56:15 PM
> To: Wayne Oldford <rwoldford at uwaterloo.ca>
> Cc: r-devel at r-project.org <r-devel at 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 <rwoldford at
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 at 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.mes at cbs.dk  Priv: PDalgd at gmail.com
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

Wayne Oldford

2020-Jun-12 00:24 UTC

head link

[Rd] tcltk image reading problem (on a mac?): [tcl] encountered an unsupported criticial chunk type "eXIf"

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" <jfox at mcmaster.ca>
Date: Thursday, June 11, 2020 at 7:54 PM
To: Wayne Oldford <rwoldford at uwaterloo.ca>
Cc: Peter Dalgaard <pdalgd at gmail.com>, "r-devel at
r-project.org" <r-devel at 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 <rwoldford at
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 <pdalgd at gmail.com>
    > Sent: Thursday, June 11, 2020 5:56:15 PM
    > To: Wayne Oldford <rwoldford at uwaterloo.ca>
    > Cc: r-devel at r-project.org <r-devel at 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 <rwoldford at
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 at 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.mes at cbs.dk  Priv: PDalgd at gmail.com
    > 
    > 
    > 
    > 
    > 
    > 
    > 
    > 
    > 
    > 
    > 	[[alternative HTML version deleted]]
    > 
    > ______________________________________________
    > R-devel at r-project.org mailing list
    > https://stat.ethz.ch/mailman/listinfo/r-devel

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