[R] Multiple line graphs

[lt2]

HI everyone, I'm just starting to get into graphing with R and I need to
generate one graph that illustrates the pattern of gene expression for
various patients. My data is in .csv format and is as follows and i'm
showing below a portion of the data.

Pt	Coordinate	Log2Ratio
1	34046382	-0.023639869
1	34141437	0.016456776
1	34232498	-0.027852121
1	34261900	-0.167065347
2	34364856	-0.182864057
2	34461485	-0.228341688
2	34952694	1.90875531
3	34174705	1.312169128
3	34247833	1.381729262
3	34320273	1.218914649
3	34390545	0.992551194

I can generate the multiple line graphs but i can't get the different colors
per patient, nor do i know how to change the pattern of the line.

Any ideas and help is greatly appreciated.




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