R help - Jun 2013 - How to display multiples lines with different color on the same plot?

Hi all,

I'm struggling with the display of several regression lines (with different
colors) on the same plot.

I manually drew what I'm trying to do with 8 lines (see attached).

Any thoughts for a code will be very much appreciated.

Thanks

Armel

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Hello,

See the help pages for

?abline
?par  # parameter 'col'

Hope this helps,

Rui Barradas

Em 04-06-2013 22:05, Kaptue Tchuente, Armel escreveu:
> Hi all,
>
> I'm struggling with the display of several regression lines (with
different colors) on the same plot.
>
> I manually drew what I'm trying to do with 8 lines (see attached).
>
> Any thoughts for a code will be very much appreciated.
>
> Thanks
>
> Armel
>
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

On Jun 4, 2013, at 3:05 PM, Kaptue Tchuente, Armel wrote:
> Hi all,
>
> I'm struggling with the display of several regression lines (with  
> different colors) on the same plot.
>
> I manually drew what I'm trying to do with 8 lines (see attached).
If you want lines that only span a portion of a plot area, then you  
should be looking at the segments function.

-- 

David Winsemius, MD
Alameda, CA, USA

Try:
library(ggplot2)
ggplot(mtcars, aes(mpg, qsec, colour = as.factor(gear))) +
  geom_point() + geom_smooth(method = lm, se = FALSE)

You probably will have to melt your data to get into the right format. 

John Kane
Kingston ON Canada
> -----Original Message-----
> From: armel.kaptue at sdstate.edu
> Sent: Tue, 4 Jun 2013 21:05:45 +0000
> To: r-help at r-project.org
> Subject: [R] How to display multiples lines with different color on the
> same plot?
> 
> Hi all,
> 
> I'm struggling with the display of several regression lines (with
> different colors) on the same plot.
> 
> I manually drew what I'm trying to do with 8 lines (see attached).
> 
> Any thoughts for a code will be very much appreciated.
> 
> Thanks
> 
> Armel
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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