[R] ggplot2 legend

[Felipe Carrillo]

Thanks for your help Mike, it works like a charm now!!

--- On Thu, 5/28/09, Mike Lawrence <Mike.Lawrence at dal.ca> wrote:

> From: Mike Lawrence <Mike.Lawrence at dal.ca>
> Subject: Re: [R] ggplot2 legend
> To: "Felipe Carrillo" <mazatlanmexico at yahoo.com>
> Cc: r-help at stat.math.ethz.ch
> Date: Thursday, May 28, 2009, 1:06 PM
> First, your example didn't work
> because fish_ByMuestreo didn't build
> properly (deleting the first "structure(list(data = " bit
> solves
> this).
> 
> To solve your plotting problem, note that as constructed,
> the Muestreo
> column is numeric, whereas you seem to want to treat it as
> a factor.
> Solution: convert to factor:
> 
> fish_ByMuestreo$Muestreo=factor(fish_ByMuestreo$Muestreo)
> 
> On Thu, May 28, 2009 at 3:47 PM, Felipe Carrillo
> <mazatlanmexico at yahoo.com>
> wrote:
> >
> > Hi:
> >  I need some help with the legend. I got 14
> samples(Muestreo) and I
> >  am trying to plot a smooth line for each sample. I
> am able to accomplish that but the problem is that the
> legend only displays every other sample. How can I force the
> legend to show all of my Muestreos? Thanks in advance.
> > library(ggplot2)
> > fishplot <-
>  qplot(PondName,BodyWeight.g.,data=fish_ByMuestreo,colour=Muestreo,position="jitter")+stat_summary(aes(group=Muestreo),fun.data="mean_cl_normal",
colour="green",geom="smooth",fill=NA)+
opts(title="Average weight(grs) by Pond")
print(fishplot)


> > Felipe D. Carrillo
> > Supervisory Fishery Biologist
> > Department of the Interior
> > US Fish & Wildlife Service
> > California, USA

> Mike Lawrence
> Graduate Student
> Department of Psychology
> Dalhousie University