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

[Gabor Csardi]

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
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> >> 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