[R] how to plot multi- lines on one diagram

[Marc Schwartz]

On Sun, 2004-02-22 at 13:58, liu qin wrote:
> Hello there:
> 
> I got a matrix as data1, I do need to plot each column
> and illustrate them as 4 lines on the same screen.
> 
> Would anybody help me out please?
> 
> > data1
>        [,1]  [,2]  [,3]   [,4]
>  [1,] 94.35 60.89 33.12 0.1001     	
>  [2,] 94.17 60.53 32.76 0.1003			
>  [3,] 94.35 61.80 34.74 0.0980
>  [4,] 95.45 65.99 38.74 0.0910
>  [5,] 95.82 69.44 38.38 0.0859
>  [6,] 95.64 68.72 42.19 0.0903
>  [7,] 94.35 69.28 43.11 0.2931
>  [8,] 94.19 68.73 43.27 0.0980
>  [9,] 93.82 65.81 38.36 0.1357
>  [10,] 92.90 63.81 39.28 0.1353	
> 
> Thank you very much indeed,
> 
> Qin Liu

See ?matplot

Example:

# create a 4 column matrix
data1 <- matrix(1:40, ncol = 4)
> data1
      [,1] [,2] [,3] [,4]
 [1,]    1   11   21   31
 [2,]    2   12   22   32
 [3,]    3   13   23   33
 [4,]    4   14   24   34
 [5,]    5   15   25   35
 [6,]    6   16   26   36
 [7,]    7   17   27   37
 [8,]    8   18   28   38
 [9,]    9   19   29   39
[10,]   10   20   30   40

# Now plot the four columns as lines
matplot(data1, type = "l")

HTH,

Marc Schwartz