profile plot in R

Date: Mon, 20 Jun 2011 07:28:12 -0700
Subject: Re: [R] profile plot in R
From: djmuser at gmail.com
To: isvik at live.com
CC: jwiley.psych at gmail.com; r-help at r-project.org

Hi:

Typically a profile plot is a plot over time for each of n subjects
(aka a 'spaghetti plot'). Here's a revision of your code to yield a
profile plot in ggplot2, although it's not clear for what the grouping
variable is meant.

sampledata= matrix(c(1.002, 1.76, 0.67, 0.99, 1.38, 1.0, 0.5, 0.78,
1.003,0.57, 0.99, 0.58, 0.76, 1.23,
1.45, .78,
1.43, 1.34, 1.0, 0.9), ncol = 5,
dimnames = list(c("cond1", "cond2",
"cond3", "cond4"),
c("col1",
"col2", "col3", "col4", "col5")))
sdata <- melt(sampledata) # melt method for matrices
sdata$grp <- factor(c('grp1', 'grp1', 'grp2', 'grp3'))
sdata$time <- rep(1:5, each = 4)

library(ggplot2)
h <- ggplot(sdata, aes(time, value))
h + geom_point(aes(colour = cond), size = 2.5) +
geom_line(aes(colour = cond), size = 1)

Hope this is enough to get you started...

Dennis

On Mon, Jun 20, 2011 at 5:20 AM, Vickie S <isvik at live.com> wrote:

Hi thanks for the help.

Here is the error message i got. I could not figure out what goes wrong here.

======
require(ggplots2)
sampledata=data.frame(c(1.002, 1.76, 0.67, 0.99), c(1.38,1.0,0.5, 0.78), c(1.003,0.57,0.99, 0.58),c(0.76,1.23, 1.45, .78), c(1.43, 1.34, 1.0, 0.9))
rownames(sampledata)=c("cond1", "cond2", "cond3", "cond4")
colnames(sampledata)=c("col1", "col2", "col3", "col4", "col5")
grp=c("grp1", "grp1", "grp2", "grp3")
sampledata=cbind(sampledata, grp)
long.dat=melt(sampledata[,1:5], idvars=as.character(rownames(sampledata)), measure.vars=as.character(colnames(sampledata)[1:5]), variable_name="cols")

ggplot(long.dat, aes(x = cols, y = value)) +
+  geom_line(aes(colour = sampledata$grp)) +
+ facet_grid(~ rownames(sampledata))
Error in get("make_aesthetics", env = x, inherits = TRUE)(x, ...) :
  could not find function "empty"

=====


thanks again,
Vickie S

----------------------------------------

CC: r-help at r-project.org
From: jwiley.psych at gmail.com
Subject: Re: [R] profile plot in R
Date: Sat, 18 Jun 2011 08:24:01 -0700
To: isvik at live.com

Hi,

Another easy option would be to convert your data to "long" format and then use ggplot2 or lattice. Something like (though not exact without a reproducible example):

require(ggplot2)
long.dat <- melt(your_data, arguments)

ggplot(long.dat, aes(x = variable, y = value)) +
geom_line(aes(colour = group)) +
facet_grid(~ condition)

HTH,

Josh

On Jun 17, 2011, at 12:43, Vickie S <isvik at live.com> wrote:

Hi friends,

I have a matrix with following format.

group var1 var2 .......varN

c1 group1 1.2399 1.4990....-1.4829

c2 group4 0.8989 0.7849.....1.8933

...

...

c100 group10 .....



I want to draw a profile plot
of each condition c1 to c100, which rows in above matrix and each line
representing a row should be uniquely colored according to the group(1
to 10).

I think this is simple task but I could not figure out how to set the colors.



Any help would be appreciated.



thanks

-Vickie
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