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

From: David Winsemius <dwinsemius_at_comcast.net>
Date: Sat, 01 Mar 2008 16:32:01 +0000 (UTC)

"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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Received on Sat 01 Mar 2008 - 16:36:29 GMT

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