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

[David Winsemius]

"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? 
>>  >
>>  >