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".
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> 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
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