[R] Line Graph - Greater than 2 variables on plot

Wayne Aldo Gavioli wgavioli at fas.harvard.edu
Fri Sep 21 03:57:31 CEST 2007



Hello all,

I was wondering if anyone knew how to construct a multiple line graph on R,
where there are 2 (or more) sets of data points plotted against some x axis of
data, and you can draw a line on the graph connecting each set of data points.

For example:

A               B              C          D
0.6566        2.1185        1.2320        5
0.647         2.0865        1.2325        10
0.6532        2.1060        1.2287        15
0.6487        2.1290        1.2313        20
0.6594        2.1285        1.2341        25
0.6577        2.1070        1.2343        30
0.6579        2.1345        1.2340        35
0.6734        2.1705        1.2362        40
0.675         2.1845        1.2372        45
0.6592        2.1550        1.2340        50
0.6647        2.1710        1.2305        55



Would there be a way:
a) To graph all the points of data in sets A, B and C as Y coordinates on one
graph, using the points in set D as the X-axis/coordinates for all 3 sets (A, B
and C)?
b) To be able to draw 3 lines on the graph that connect each set of data (1 line
connects all the A points, one line connects all the B points, one line connects
all the C points)


I couldn't find anything in the examples or the help section about multiple
lines on the same graph, only one line.


Thanks,



Wayne



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