Re: [igraph] trouble with read.graph on Mac

[MATSUDA, Noriyuki]

Hello:

  Yes, the file contains 2-byte characters in node.name attributes.  However,
I do not know which encoding scheme among several possibilities was applied
to the file.  I'll ask an IT assistant.
  Fortunately, the file was revised by my student and it no longer 
caused errors,
except that 2-byte characters are not readable in R on my Mac.  Strangely,
they are readable in other text processing soft.
  Thanks again for your concern and suggestions.

At 0:50 PM +0200 07.7.9, Gabor Csardi wrote:
> The file has some (Japanese?) multibyte characters, this is causing the
> problem i think.
>
> Actually for me on Linux it reads the graph ok, but R cannot print the
> names, it gives:
>
> >  g <- read.graph("ELX-context.gml", format="gml")
> >  g
> Vertices: 48
> Edges: 205
> Directed: FALSE
> Edges:
>
> [0]  Error in print.default(as.matrix(format.data.frame(x, digits = digits,  :
>         invalid multibyte string
>
> After removing the characters it works. Is this an utf8-encoded file?
> Could you please try to save the graph in graphml format and try
> to read it in or send it to me.
>
> Thanks, G.
>
> On Mon, Jul 09, 2007 at 07:25:09PM +0900, MATSUDA, Noriyuki wrote:
> >  Hello:
> >
> >     Here's the result of what you suggested below:
> >       > lines <- scan("ELX-context.gml", what=character(0))
> >         Read 2382 items
> >       > g <- graph.ring(10)
> >       > write.graph(g, file="test.gml", format="gml")
> >       > g2 <- read.graph("test.gml", format="gml")
> >
> >    I have attached the the gml file which is also available at
> >       http://www.sk.tsukuba.ac.jp/~mazda/dA/ELX-context.gml
> >
> >  Thank you.
> >  At 11:43 AM +0200 07.7.9, Gabor Csardi wrote:
> >  >Can you read the file via other R methods?
> >  >Eg. can you run
> >  >
> >  >lines <- scan("ELX-context.gml", what=character(0))
> >  >
> >  >If yes then could you please try it for other graphs as well?
> >  >The easiest to try would be
> >  >
> >  >g <- graph.ring(10)
> >  >write.graph(g, file="test.gml", format="gml")
> >  >g2 <- read.graph("test.gml", format="gml")
> >  >
> >  >If this works for you then could you please send me the graph you want to
> >  >read, or at least a minimal example graph which does not work
> >  >for you.
> >  >
> >  >Thanks,
> >  >Gabor
> >  >
> >  >On Mon, Jul 09, 2007 at 05:42:43PM +0900, MATSUDA, Noriyuki wrote:
> >  >> Hello:
> >  >>
> >  >>    I encountered an error in read.graph on Mac
> >  >>     > read.graph("ELX-context.gml",format="gml")
> >  >>       Error in read.graph.gml(file, ...) : At rinterface.c:3380 :
> >  >> Cannot read GML file, File operation error
> >  >>
> >  >>   The "ELX-context.gml" was created on a Window machine by my assistant
> >  >>   and
> >  >> sent to me by email-attachment.  It was successfully imported into
> >  >> Cytoscape.
> >  >> --
> >  >> MATSUDA, Noriyuki
> >  >>
> >  >>
> >  >> _______________________________________________
> >  >> igraph-help mailing list
> >  >> address@hidden
> >  >> http://lists.nongnu.org/mailman/listinfo/igraph-help
> >  >
> >  >--
> >  >Csardi Gabor <address@hidden>    MTA RMKI, ELTE TTK
> >  >
> >  >
> >  >_______________________________________________
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>
>
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>
> --
> Csardi Gabor <address@hidden>    MTA RMKI, ELTE TTK
>
>
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