Nothing
growthform_pie <- function(GF, colours) {
GF <- GF[, which(colSums(GF) > 0), drop=FALSE]
try(pie(x=as.numeric(GF), labels=round(as.numeric(GF), digits=0), main=row.names(GF), col=colours[names(GF)]))
try(legend("right", legend=names(GF), pch=20, col=colours[names(GF)], bty="n", cex=0.7, pt.cex=1))
}
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