R help - Nov 2011 - plotting multiple lines on single graph ggplot2

Hello everyone

I have some data of the following type.

100 200 300 400 500
1.1 1.2 1.3 1.4 1.5
600 700 800 900 1000
1.5 1.7 1.9 2.0 2.4

With plot() and points functions I can plot these 4 lines of data. But
I dont know how to do it with qplot or ggplot functions. The scenario
is something like this: the hundreds should appear on x-axis and the
fractional values of y axis.

Thanks alot.

MEMON Abdul Wahid

There are probably lots of better aproaches but this seems to work.  I just
combined the lines into one vector and assighed a dummy variable to mark the
diffferent lines

ibrary(ggplot2)
mydata <- data.frame(xrange <- c(100, 200, 300, 400, 500, 600, 
        700, 800, 900, 1000),
        yrange = c( 1.1, 1.2, 1.3, 1.4, 1.5, 1.5, 1.7, 1.9, 2.0, 2.4),
        mark = c(rep("a",5), rep("b", 5)))
          
p <- ggplot(mydata, aes( xrange, yrange, colour= mark)) 

p <- p + geom_line()

p

--- On Mon, 11/28/11, Abdul Wahid Memon <engrwahidmemon at gmail.com>
wrote:
> From: Abdul Wahid Memon <engrwahidmemon at gmail.com>
> Subject: [R] plotting multiple lines on single graph ggplot2
> To: r-help at r-project.org
> Received: Monday, November 28, 2011, 9:35 AM
> Hello everyone
> 
> I have some data of the following type.
> 
> 100 200 300 400 500
> 1.1 1.2 1.3 1.4 1.5
> 600 700 800 900 1000
> 1.5 1.7 1.9 2.0 2.4
> 
> With plot() and points functions I can plot these 4 lines
> of data. But
> I dont know how to do it with qplot or ggplot functions.
> The scenario
> is something like this: the hundreds should appear on
> x-axis and the
> fractional values of y axis.
> 
> Thanks alot.
> 
> MEMON Abdul Wahid
> 
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