[R] Plotting the diff. between two curves

[Gabor Grothendieck]

In that case you will need to modify the last line to be:

plot(time(Cz), coredata(Cz[,1] - Cz[,2]), log = "x", type = "l")

On 11/25/05, Prasanna <prasannaprakash at gmail.com> wrote:
> Thanks for your replies, Jim and Gabor:
>
> Jim:
>
> The x-axis is going to be in log scale. Basically I am comparing two
> algorithms. One is very quick and another one is slow. X axis denotes time
> and y axis is a normalized solution quality.
> I hope it is clear now if not then let me know
>
> Gabor:
>
> I am looking into this Zoo package.
>
> Thanks for your replies
>
>
>
>
>
> On 11/26/05, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> >
> > Using the zoo package you can merge the curves together
> > and use na.approx to fill in the blanks.  Assuming that
> > the first column in each instance is the x variable:
> >
> > library(zoo)
> > Az <- zoo(A[,2], A[,1])
> > Bz <- zoo(B[,2], B[,1])
> > Cz <- na.approx(merge(Az, Bz))
> > plot(Cz[,1] - Cz[,2])
> >
> >
> > On 11/25/05, Prasanna <prasannaprakash at gmail.com> wrote:
> > > Dear Rs
> > >
> > > I have two vectors A and B
> > > where
> > >
> > > A is
> > >
> > >
> > >            V1        d
> > > 1  0.000100000 1.123278
> > > 2  0.002186431 1.120448
> > > 3  0.004351214 1.106661
> > > 4  0.006515998 1.107713
> > > 5  0.008680781 1.107667
> > > 6  0.013010348 1.106353
> > > 7  0.019504698 1.104077
> > > 8  0.034658181 1.103202
> > > 9  0.051976447 1.103200
> > > 10 0.073624280 1.094825
> > > 11 0.093085682 1.085123
> > > 12 0.095250465 1.087325
> > > 13 0.132051782 1.086158
> > > 14 0.168853098 1.084814
> > > 15 0.233774949 1.077453
> > > 16 0.296553665 1.076972
> > > 17 0.298718448 1.077258
> > > 18 0.354981166 1.073860
> > > 19 0.383123349 1.068163
> > > 20 0.398276832 1.068830
> > > 21 0.415595099 1.068267
> > > 22 0.426419015 1.066104
> > > 23 0.478373815 1.064580
> > > 24 0.534636533 1.062743
> > > 25 0.694808850 1.060799
> > > 26 0.816015067 1.037726
> > > 27 0.818179850 1.038340
> > > 28 0.820344634 1.027501
> > > 29 0.826838983 1.022188
> > > 30 0.829003767 1.017346
> > > 31 0.839827683 1.016244
> > > 32 0.841992467 1.007883
> > > 33 0.846322033 1.007745
> > > 34 0.852816383 1.006360
> > > 35 1.000000000 1.000000
> > >
> > > and  B is
> > >
> > >           V1        d
> > > 1 0.000100000 1.123278
> > > 2 0.002186431 1.112518
> > > 3 0.004351214 1.104332
> > > 4 0.006515998 1.091071
> > > 5 0.008680781 1.003591
> > > 6 0.010845564 0.948444
> > > 7 1.000000000 0.948444
> > >
> > >
> > > If I plot A and B, I will get two curves. However, is there any method
> > to
> > > find the signed difference between these two curves so that I will have
> > only
> > > one curve which shows the difference between these two curves?
> > >
> > > Thanks
> > > Prasanna
> > >
> > >
> > >
> > >
> > >
> > > --
> > > Prasanna BALAPRAKASH
> > > IRIDIA, Université Libre de Bruxelles
> > > 50, Av. F. Roosevelt, CP 194/6
> > > 1050  Brussels
> > > Belgium.
> > > http://iridia.ulb.ac.be/~prasanna
> > >
> > >        [[alternative HTML version deleted]]
> > >
> > >
> > >
> > > ______________________________________________
> > > R-help at stat.math.ethz.ch mailing list
> > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > PLEASE do read the posting guide!
> > http://www.R-project.org/posting-guide.html
> > >
> > >
> >
>
>
>
> --
> Prasanna BALAPRAKASH
> IRIDIA, Université Libre de Bruxelles
> 50, Av. F. Roosevelt, CP 194/6
> 1050  Brussels
> Belgium.
> http://iridia.ulb.ac.be/~prasanna
>
>        [[alternative HTML version deleted]]
>
>
>
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