Plotting Simple Data in R

Question

I have a comma separated file named foo.csv containing the following data:

scale, serial, spawn, for, worker
5, 0.000178, 0.000288, 0.000292, 0.0003         


        

Answer 1

I'm new in R, but if you want to draw scale vs. all other columns in one plot, easy and with some elegance :) for printing or presentation, you may use Prof. Hadley Wickham's packages ggplot2 & reshape.

Installation:

install.packages(“ggplot2”,dep=T)
install.packages(“reshape”,dep=T)

Drawing your example:

library(ggplot2)
library(reshape)

#read data
data = read.table("foo.csv", header=T,sep=",")

#melt data “scale vs. all”
data2=melt(data,id=c("scale"))
data2

   scale variable      value
1      5   serial   0.000178
2     10   serial   0.156986
3     12   serial   2.658998
4     15   serial 188.023411
5      5    spawn   0.000288
6     10    spawn   0.297926
7     12    spawn   6.059502
8     15    spawn 719.463264
9      5     for.   0.000292
10    10     for.   0.064509
11    12     for.   0.912733
12    15     for. 164.111459
13     5   worker   0.000300
14    10   worker   0.066297
15    12   worker   0.923606
16    15   worker 161.687982

#draw all variables at once as line with different linetypes
qplot(scale,value,data=data2,geom="line",linetype=variable)

You could also use points (geom=”points”), choose different colours or shapes for different variables dots (colours=variable or shape=variable), adjust axis, set individual options for every line etc.

Link to online documentation.