The function
getCaption <- function(k) as.graphicsAnnot(unlist(caption[k]))
inside plot.lm in R-2.9.2 and R-2.10.0alpha loses the expression
for caption 6. From a recover() inside the function
Browse[1]> caption[6]
[[1]]
expression("Cook's dist vs Leverage " * h[ii]/(1 - h[ii]))
Browse[1]> caption[[6]]
expression("Cook's dist vs Leverage " * h[ii]/(1 - h[ii]))
Browse[1]> getCaption(6)
[[1]]
"Cook's dist vs Leverage " * h[ii]/(1 - h[ii])
Browse[1]> as.graphicsAnnot(caption[[6]])
expression("Cook's dist vs Leverage " * h[ii]/(1 - h[ii]))
The repair seems to be to redefine getCaption as follows
Browse[1]> getCaption <- function(k) as.graphicsAnnot(caption[[k]])
Browse[1]> getCaption(6)
expression("Cook's dist vs Leverage " * h[ii]/(1 - h[ii]))
Browse[1]>
Rich
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