On 4/19/2012 5:20 AM, Brian Smith wrote:
Thanks Brian. That worked. I also wanted to increase the size of the
'points' on the graph. Is there any way I can get rid of the 'legend' (in
this case '3') appearing on the plot?
======= code ====
library(ggplot2)
leaves<- letters[1:8]
mat<- matrix(sample(1:1000,32),nrow=16,ncol=2)
colnames(mat)<- paste('t',1:2,sep='')
df<- as.data.frame(cbind(mat,leaves))
vals<- 1:length(leaves)
names(vals)<- leaves
p<- ggplot(df,aes(t1,t2))
p + aes(shape = factor(leaves)) + geom_point(aes(colour =
factor(leaves),size=3)) + scale_shape_manual(values=vals)
Move the size=3 outside the aes. That way it is set rather than mapped
(when mapped, a legend is needed to show the reverse mapping)
p + aes(shape = factor(leaves)) + geom_point(aes(colour =
factor(leaves)),size=3) + scale_shape_manual(values=vals)
=========
thanks!
On Mon, Apr 16, 2012 at 3:09 PM, Brian Diggs<dig...@ohsu.edu> wrote:
On 4/16/2012 7:31 AM, Brian Smith wrote:
Hi,
I was trying to replicate one of the graphs given on the ggplot2 website.
I
have given a sample code below. I would like to combine the legends, since
each color is uniquely mapped to a shape.
###
library(ggplot2)
leaves<- letters[1:8]
mat<- matrix(sample(1:1000,32),nrow=**16,ncol=2)
colnames(mat)<- paste('t',1:2,sep='')
df<- as.data.frame(cbind(mat,**leaves))
vals<- 1:length(leaves)
names(vals)<- leaves
p<- ggplot(df,aes(t1,t2))
p + aes(shape = factor(leaves)) + geom_point(aes(colour =
factor(leaves))) + scale_shape_manual("",values=**vals)
####
Which parameter do I need to change?
add scale_colour_discrete("") to your call. In order for scales to be
combined, the breaks, labels, and title must all be the same. You had
breaks and labels the same, but not the title. Alternatively, change the
scale_shape_manual call to scale_shape_manual(values=**vals).
thanks!
--
Brian S. Diggs, PhD
Senior Research Associate, Department of Surgery
Oregon Health& Science University
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--
Brian S. Diggs, PhD
Senior Research Associate, Department of Surgery
Oregon Health & Science University
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