Loris Bennett <loris.benn...@fu-berlin.de> writes:
> Hi Jim,
>
> jim holtman <jholt...@gmail.com> writes:
>
>> Here is what it does locally on my PC:
>>
>>> library("igraph")
>>> topo_data <- read.table(text = "ibcore01 ibswitch01
>> + ibcore01 ibswitch02
>> + ibcore01 ibswitch03
>> + ibcore02 ibswitch01
>> + ibcore02 ibswitch02
>> + ibcore02 ibswitch03
>> + ibswitch01 node001
>> + ibswitch01 node002
>> + ibswitch01 node003
>> + ibswitch02 node004
>> + ibswitch02 node005
>> + ibswitch02 node006
>> + ibswitch03 node007
>> + ibswitch03 node008
>> + ibswitch03 node009" ,head=FALSE)
>>> system.time({
>> + network_data <-graph.data.frame(topo_data, directed=F)
>> + plot(network_data)
>> + })
>> user system elapsed
>> 0.01 0.01 0.03
>>>
>>>
>>
>> Does not seem too slow. Creating a PDF file takes a little longer:
>>
>>> library("igraph")
>>> topo_data <- read.table(text = "ibcore01 ibswitch01
>> + ibcore01 ibswitch02
>> + ibcore01 ibswitch03
>> + ibcore02 ibswitch01
>> + ibcore02 ibswitch02
>> + ibcore02 ibswitch03
>> + ibswitch01 node001
>> + ibswitch01 node002
>> + ibswitch01 node003
>> + ibswitch02 node004
>> + ibswitch02 node005
>> + ibswitch02 node006
>> + ibswitch03 node007
>> + ibswitch03 node008
>> + ibswitch03 node009" ,head=FALSE)
>>> system.time({
>> + network_data <-graph.data.frame(topo_data, directed=F)
>> + pdf('test.pdf')
>> + plot(network_data)
>> + dev.off()
>> + })
>> user system elapsed
>> 0.09 0.00 0.16
>>
>> The PDF file is attached. So maybe it is something with your remote
>> connection.
>
> You're right. Running locally even the plot of complete network takes
> less than 0.2 seconds via the X11 device. I'll have a closer look at
> the connection.
>
> Thanks,
>
> Loris
I found the solution here:
http://www.r-bloggers.com/slow-r-graphics-via-ssh/
namely calling
X11.options(type="Xlib")
in the remote R session.
Cheers,
Loris
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