I installed jpeg package and tried to use
kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me an
error:
Error in readJPEG("kim.jpeg") : unable to open kim.jpeg
I already put "kim.jpeg" in Rstudio's default working directory:
"E:\home
work\Rstudio". So I don't think it's a problem caused by omitting
the file's
path. But I tried with the full path version just in case and still got the
"unable to open" error:
kim<-readJPEG("E:\\ home work\\Rstudio\\kim.jpeg")
Error in readJPEG("E:\\ home work\\Rstudio\\kim.jpeg") :
unable to open E:\ home work\Rstudio\kim.jpeg
So now I really don't know what is wrong.
[[alternative HTML version deleted]]
Hi, r-help mailing list subscribers,
I installed jpeg package and tried to use
kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me an
error:
Error in readJPEG("kim.jpeg") : unable to open kim.jpeg
I already put "kim.jpeg" in Rstudio's default working directory:
"E:\home
work\Rstudio". So I don't think it's a problem caused by omitting
the file's
path. But I tried with the full path version just in case and still got the
"unable to open" error:
kim<-readJPEG("E:\\ home work\\Rstudio\\kim.jpeg")
Error in readJPEG("E:\\ home work\\Rstudio\\kim.jpeg") :
unable to open E:\ home work\Rstudio\kim.jpeg
So now I really don't know what is wrong. Thanks for your help!
[[alternative HTML version deleted]]
Being unable to open a file is a related to your operating system and how R
interacts with that OS. If your interactive development environment (IDE, of
which RStudio is an example) is trying to make things simpler for you but you
don't understand how to use it, then you need to ask help from your RStudio
support resources, not here.
When posting here, you should mention your results from using base R functions
like
?sessionInfo
?getwd
?list.files
as indicated in the Posting Guide mentioned at the bottom of every R-help email.
Consistent with the fact that this is an interface issue between R and the OS,
sometimes you will have to investigate the problem from outside R. For example,
you might need to investigate issues with security permissions that are OS
specific and completely outside the scope of this forum.
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Yi Yuan <lambandme at gmail.com> wrote:
>I installed jpeg package and tried to use
>
>kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me
an
>error:
>Error in readJPEG("kim.jpeg") : unable to open kim.jpeg
>
>I already put "kim.jpeg" in Rstudio's default working
directory:
>"E:\home
>work\Rstudio". So I don't think it's a problem caused by
omitting the
>file's
>path. But I tried with the full path version just in case and still got
>the
>"unable to open" error:
>
>kim<-readJPEG("E:\\ home work\\Rstudio\\kim.jpeg")
>Error in readJPEG("E:\\ home work\\Rstudio\\kim.jpeg") :
> unable to open E:\ home work\Rstudio\kim.jpeg
>
>So now I really don't know what is wrong.
>
> [[alternative HTML version deleted]]
>
>______________________________________________
>R-help at r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
Similar issue with URLs:> yesWeCan <- "http://upload.wikimedia.org/wikipedia/commons/9/9d/Barack_Obama.jpg" > url(yesWeCan)description "http://upload.wikimedia.org/wikipedia/commons/9/9d/Barack_Obama.jpg" class "url" mode "r" text "text" opened "closed" can read "yes" can write "no"> readJPEG(yesWeCan)Error in readJPEG(yesWeCan) : unable to open http://upload.wikimedia.org/wikipedia/commons/9/9d/Barack_Obama.jpg On 14 January 2013 14:57, Yi Yuan <lambandme at gmail.com> wrote:> I installed jpeg package and tried to use > > kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me an error: > Error in readJPEG("kim.jpeg") : unable to open kim.jpeg > > I already put "kim.jpeg" in Rstudio's default working directory: "E:\home > work\Rstudio". So I don't think it's a problem caused by omitting the file's > path. But I tried with the full path version just in case and still got the > "unable to open" error: > > kim<-readJPEG("E:\\ home work\\Rstudio\\kim.jpeg") > Error in readJPEG("E:\\ home work\\Rstudio\\kim.jpeg") : > unable to open E:\ home work\Rstudio\kim.jpeg > > So now I really don't know what is wrong. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.