I don't think there is a built-in "star" shape. AFAIR there is one in the
examples, so just take the code from there.

G.

On Sun, Feb 1, 2015 at 2:28 PM, Uri Shwed <[email protected]> wrote:

>  Dear all,
> I had a good R session when my (apple) computer crashed. Returning to what
> I was doing, igraph generated this very odd error:
>
> Error in igraph.check.shapes(params("vertex", "shape")) :
>   Bad vertex shape(s): star.
>
>  Since "star" is a good vertex shape, and the very same code worked and
> produced plots with stars before the crash, I figured the problem is with
> something in the environment that was there before and isn’t there now
> (after the crash). What could that be?And why doesn’t igraph works anymore
> as it used to?
> I paste some code below, but I don’t think its relevant as the problem is
> with “star”, right?
>
>  Thanks,
> Uri
>
>
>  pmEbw<-function(y,labe=TRUE,op=1,title="",aw=0.5,xl=c(100,492),yl=c(61,260))
> {
>
> shape<-c("circle","circle","circle","square","square","square","star","star","star","vrectangle","vrectangle","sphere","sphere")
>
> color<-c("black","white","darkgrey","black","white","lightgrey","black","white","lightgrey","black","white","black","lightgrey","black","white")
>     if (labe) {lab<-V(y$sg)$SDS} else {lab<-""}
>     Colo<-as.numeric(V(y$sg)$D)
>     shaper<-shape[Colo]
>     if (op==1) {ec="grey32"} else {ec=add.alpha("darkgrey",op)}
>
> plot.igraph(y$sg,layout=y$lo,rescale=FALSE,xlim=c(-1,1),ylim=c(-1,1),edge.color=ec,edge.arrow.width=aw,vertex.shape=shape[Colo],vertex.frame.color=fcolor[Colo],vertex.color=color[Colo],vertex.size=8,vertex.size2=12,vertex.label.cex=0.5,main=title,vertex.label=lab)
> }
>
>  > pmEbw(mind[[1]],title="1965-2000",labe=FALSE)
>  Show Traceback
>
>  Rerun with Debug
>  Error in igraph.check.shapes(params("vertex", "shape")) :
>   Bad vertex shape(s): star.
> >
>   *********************************************
> Uri Shwed, PhD.
> Department of Sociology and Anthropology
> Ben Gurion University of the Negev
> Beer Sheva 84105 Israel
> [email protected]
> **********************************************
>
>
>
>
>
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>
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