Hi,
I was trying to increase the size of certain lines in my plot (samples 'B'
and 'D' in example below). However, when I try to modify the line size, I
seem to screw up the linetypes. Also, is there a way to reflect the line
size in the legend?
Here is some sample code for illustration:
library(reshape)
matx <- matrix(sample(1:1000),4,5)
colnames(matx) <- LETTERS[1:5]
rownames(matx) <- 1:4
subset1 <- c('B','D')
ltyvect <- c("solid","longdash","longdash","solid","solid")
colvect <- c("red","black","orange","blue","lightblue")
lwdvect <- rep(1,ncol(matx))
## For subset of samples, increase line width size
fmakelwd <- function(set1,subset1,vals1,val2=2){
idx <- set1 %in% subset1
vals1[idx] <- val2
return(vals1)
}
maty <- melt(matx)
set1 <- maty$X2
vals1 <- rep(1,length(set1))
mylwd <- fmakelwd(set1,subset1,vals1,val2=1.5)
matz <- data.frame(maty,mylwd)
##### code without trying to modify line size
p <- ggplot(data=matz,aes(x=X1, y = value,col=X2,lty=X2,shape=X2))
p <- p + geom_line(aes(group = X2)) + geom_point(aes(shape =
factor(X2)),size=3) +
scale_linetype_manual(values = ltyvect) +
scale_color_manual(values = colvect) +
theme(legend.title = element_blank())
p
##### modifying line size
p <- ggplot(data=matz,aes(x=X1, y =
value,col=X2,lty=X2,shape=X2,size=mylwd))
p <- p + geom_line(aes(group = X2,size=mylwd)) + geom_point(aes(shape =
factor(X2)),size=3) +
scale_linetype_manual(values = ltyvect) +
scale_color_manual(values = colvect) +
scale_size(range=c(0.1, 2), guide=FALSE) +
theme(legend.title = element_blank())
p
#################
thanks!!
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