[igraph] Problem with igraph and sweave

[David Edwards]

Hi

When I put code using the plot() function in an sweave code chunk, I get the 
error

Error in text.default(x, y, labels = labels, col = label.color, family = 
label.family, : 
family 'serif' not included in PostScript device
Error in driver$runcode(drobj, chunk, chunkopts) : 
Error in text.default(x, y, labels = labels, col = label.color, family = 
label.family, : 
family 'serif' not included in PostScript device

when I run sweave on it. There appears to be a serif family in my postscript 
device (according to postscriptFonts()), so I am flummoxed.

A simple example of a code chunk generating the error is

@
<<fig=T>>=
g <- graph.formula(A-B)
plot(g)
@ %def

A portion of the output from postscriptFonts is:

$serif
$family
[1] "Times"
$metrics
[1] "Times-Roman.afm" "Times-Bold.afm" "Times-Italic.afm" 
[4] "Times-BoldItalic.afm" "Symbol.afm" 
$encoding
[1] "default"
attr(,"class")
[1] "Type1Font"


Any help would be gratefully received.

Best regards

David Edwards
E-mail: address@hidden