R devel - Mar 2012 - drawing the graph with many nodes

Good morning, 


I'm trying to draw a graph, and I'm using the following code.

test.matrix<-read.table("~/Desktop/Results/testgephi.csv", header =
T,
sep=",")
colnames(test.matrix) <- gsub("X", "",
colnames(test.matrix))
#drop first column
drops <- c("")
test.matrix<-test.matrix[,!(names(test.matrix) %in% drops)]
test.matrix
test.matrix<-data.matrix(test.matrix)
am.graph<-new("graphAM", adjMat=test.matrix,
edgemode="directed")
am.graph
plot(am.graph, attrs = list(node = list(fillcolor = "lightblue"),edge
list(arrowsize=0.5)))


The file testgephi.csv is following.
"","1","2","3","4","5"
"1",393,55,66,44,88
"2",44,23,47,57,89
"3",57,87,98,456,43
"4",77,767,86,32,77
"5",43,88,23,76,46

  In the example graph of the drawing works well, the problem is when I'm
trying to draw the graph from a file wih A graphAM graph with directed edges
Number of Nodes = 217 
Number of Edges = 32804 

is there any package or tool that can draw a structure like this


   Thanks


--
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Sent from the R devel mailing list archive at Nabble.com.

if you don't mind going outside of R to create it, then check out
Graphviz: http://www.graphviz.org/Gallery.php

you may have to reformat your data a little, but this tool is great
for drawing graphs.

-Whit


On Tue, Mar 27, 2012 at 5:14 AM, MSousa <ricardosousa2000 at clix.pt>
wrote:
> Good morning,
>
>
> I'm trying to draw a graph, and I'm using the following code.
>
> test.matrix<-read.table("~/Desktop/Results/testgephi.csv",
header = T,
> sep=",")
> colnames(test.matrix) <- gsub("X", "",
colnames(test.matrix))
> #drop first column
> drops <- c("")
> test.matrix<-test.matrix[,!(names(test.matrix) %in% drops)]
> test.matrix
> test.matrix<-data.matrix(test.matrix)
> am.graph<-new("graphAM", adjMat=test.matrix,
edgemode="directed")
> am.graph
> plot(am.graph, attrs = list(node = list(fillcolor =
"lightblue"),edge > list(arrowsize=0.5)))
>
>
> The file testgephi.csv is following.
>
"","1","2","3","4","5"
> "1",393,55,66,44,88
> "2",44,23,47,57,89
> "3",57,87,98,456,43
> "4",77,767,86,32,77
> "5",43,88,23,76,46
>
> ?In the example graph of the drawing works well, the problem is when
I'm
> trying to draw the graph from a file wih A graphAM graph with directed
edges
> Number of Nodes = 217
> Number of Edges = 32804
>
> is there any package or tool that can draw a structure like this
>
>
> ? Thanks
>
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/drawing-the-graph-with-many-nodes-tp4508319p4508319.html
> Sent from the R devel mailing list archive at Nabble.com.
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

Hi,

your code does not run in a fresh R environment:

  Error in getClass(Class, where = topenv(parent.frame())) : 
    "graphAM" is not a defined class

If you don't provide working code, it's (too) much effort to help.

There are some graph packages arround.
Which you need depends on what you want to do.
I can't decide that easily, without seeing your example running.


Ciao,
   Oliver