plotting

It is easy to do in base graphics, but probably a bad idea just because it
is very hard to decode the symbol/color combinations.
I just appropriated your data set and tried it in ggplot2 and your objection looks valid there as well.

And Michael was right, the shape command can go in the first aes statement.

library(ggplot2)    
p  <-  ggplot(dta  , aes(time, value, 
        shape = as.factor(id) , colour =as.factor(group ))) + 
        geom_point()
  p 

John Kane
Kingston ON Canada
-----Original Message-----
From: dcarlson at tamu.edu
Sent: Thu, 14 Mar 2013 11:23:18 -0500
To: michael.weylandt at gmail.com, hannah.hlx at gmail.com
Subject: Re: [R] plotting

It is easy to do in base graphics, but probably a bad idea just because
it
is very hard to decode the symbol/color combinations. I added a crude
legend:

# Provide reproducible data
set.seed(42)
value <- round(rnorm(20), 2)
time <- round(runif(20)*10, 1)
group <- sample(1:4)
id <- sample(1:5)
dta <- data.frame(value, time, group, id)

# Plot and legend
plot(value~time, pch=id+20, col=group, bg=group, cex=1.25)
legend("bottomright", as.character(1:4), pch=16,
  col=1:4, bty="n", inset=c(0, .045), title="Group")
legend("bottomright", as.character(1:5), pch=21:25, col="gray",
  inset=c(.1, 0), bty="n", title="ID")

----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of R. Michael Weylandt
Sent: Thursday, March 14, 2013 10:51 AM
To: li li
Cc: r-help
Subject: Re: [R] plotting

I think you'll find this easiest with ggplot2:

library(ggplot2)

ggplot(dat, aes(x = value, y = time, color = group, symbol = id)) +
geom_point()
# symbol = might not be the right argument -- I'm doing this from
memory

or similar....

MW

On Thu, Mar 14, 2013 at 3:46 PM, li li <hannah.hlx at gmail.com> wrote:
Hi alL,
   I have a data frame with 4 columns: "value", "time",  "group" and
"id".
   I would like to plot "value" vs. "time" with different colors for
different levels of "group" and
different symbols for different values of "id".
   I think I could do this but I would like to see what is an easier
way to
plot
the data this way.
   Thank you vey much.
     Hanna

        [[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-
guide.html
and provide commented, minimal, self-contained, reproducible code.

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
____________________________________________________________
GET FREE SMILEYS FOR YOUR IM & EMAIL - Learn more at http://www.inbox.com/smileys
Works with AIM?, MSN? Messenger, Yahoo!? Messenger, ICQ?, Google Talk? and most webmails

plotting

Thread (7 messages)