[R] ggplot2 qplot pch not working anymore

Stephen Sefick sas0025 at auburn.edu
Wed Jul 18 02:35:33 CEST 2012

I'm sorry I didn't give the correct code, or explaination;  the 
shape=pch doesn't work anymore.  For example this used to work, but no 
longer can accept continuous values:

#example code
a <- 1:10
b <- 1:10
pch <- 1:10

q <- data.frame(a,b,pch)

qplot(a,b, shape=pch)

many thanks,

Stephen Sefick

On 07/17/2012 07:28 PM, Stephen Sefick wrote:
> Is there a way to use a continuous variable to pch in qplot?  I 
> believe this worked in previous version.  I need to specify certain 
> values of a shape for particular points so that multiple graphs all 
> show the same shapes for the same streams.  I have gone to the 
> original data and added a pch column that I would like to use to 
> specify the shapes to pch in qplot.  Any help would be greatly 
> appreciated.
> #example code
> a <- 1:10
> b <- 1:10
> pch <- 1:10
> q <- data.frame(a,b,pch)
> qplot(a,b, pch=pch)
> Many thanks,

Stephen Sefick
Auburn University
Biological Sciences
331 Funchess Hall
Auburn, Alabama
sas0025 at auburn.edu

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