[R] Fwd: Re: How to create following chart for visualizing multivariate time series

[Henrique Dallazuanna]

This works for me:

x <- y <- seq(-4*pi, 4*pi, len=27)
r <- sqrt(outer(x^2, y^2, "+"))
library(lattice)
levelplot(r, colorkey=list(col=gray((0:32)/32)),
    col.regions=(col=gray((0:32)/32)))

'r' is a matrix for you?

On 01/03/2008, David Winsemius <dwinsemius at comcast.net> wrote:
> "Henrique Dallazuanna" <wwwhsd at gmail.com> wrote in
> news:da79af330802290329y4c0ad78fkc483303229a868ae at mail.gmail.com:
>
> library(lattice)
> levelplot(r, colorkey=list(col=gray((0:32)/32)),
>      col.regions=(col=gray((0:32)/32)))
>
> When I try that example, I get an error, even after updating lattice.
>
> > levelplot(r, colorkey=list(col=gray((0:32)/32)),
> +  col.regions=(col=gray((0:32)/32)))
> Error in UseMethod("levelplot") : no applicable method for "levelplot"
>
> If I simply change colorkey=FALSE to colorkey=TRUE in the first levelplot
> help page example, I have what looks to me as "success".
>
> levelplot(z~x*y, grid, cuts = 50, scales=list(log="e"), xlab="",
>           ylab="", main="Weird Function", sub="with log scales",
>           colorkey = TRUE,
>           region = TRUE)
>
> --
> David Winsemius
>
> >
> > On 29/02/2008, Megh Dal <megh700004 at yahoo.com> wrote:
> >> Hi Jim, i think you could not get my point. I did not want to put
> >> red-blue color there. I want to put a pallet which will describe
> >> the values of r. please have a look on following :
> > http://bp0.blogger.com/_k3l6qPzizGs/RvDVglPknRI/AAAAAAAAAKo/itlWOvuuO
> > tI/s1600-h/pairwise_kl_window60.png. Please see how a color pallate
> > is added on the right side of this plot describing the value of red
> > color, value of blue color etc.
> >>
> >>   Is there any solution?
> >>
> >>   Regards,
> >>
> >>
> >>  jim holtman <jholtman at gmail.com> wrote:
> >>   Try something like this:
> >>
> >>  require(grDevices) # for colours
> >>  x <- y <- seq(-4*pi, 4*pi, len=27)
> >>  r <- sqrt(outer(x^2, y^2, "+"))
> >>  image(x, y, r, col=gray((0:32)/32))
> >>  colors <- colorRampPalette(c('red', 'yellow', 'blue')) # create
> >>  you color spectrum
> >>  image(x,y,r, col=colors(100))
> >>
> >>
> >>
> >> On Thu, Feb 28, 2008 at 9:28 PM, Megh Dal wrote:
> >>  > I used ?image function to do that, like below :
> >>  >
> >>  > require(grDevices) # for colours
> >>  > x <- y <- seq(-4*pi, 4*pi, len=27)
> >>  > r <- sqrt(outer(x^2, y^2, "+"))
> >>  > image(x, y, r, col=gray((0:32)/32))
> >>  >
> >>  > However my next problem to add a color pallet for color
> >>  > description [as shown in following link]. If anyone here tell
> >>>>   me how to do that, it will be good for me.
> >>  >
> >>
> >> > Megh Dal wrote: Hi all,
> >>
> >> >
> >>  > Can anyone here please tell me whether is it possible to produce
> >>  > a chart displayed in http://www.datawolf.blogspot.com/ in R for
> > visualizing multivariate time series? If possible how?
> >>  >
> >>  >
>
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>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O