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

[David Winsemius]

Megh Dal <megh700004 at yahoo.com> wrote in
news:698510.72905.qm at web58105.mail.re3.yahoo.com: 

> Let me take an artifical matrix :
>    
>   dat = matrix(rnorm(200*200), 200, 200)
>    
>   My goal is to visualize this matrix according to the procedure,
>   described in previous mails. I took Mendelssohn's advice and got
>   following advice : 

It is unclear a) which emails, since you have been having an offlist 
correspondence with Mendelssohn, and b) why Holtman's solution offered 
two weeks ago is not satisfactory.

As a reminder, it was, with very slight modifications:

colkey <- colorRampPalette(c('red','blue'))(32)
levelplot(dat, colorkey=list(col=colkey),
   col.regions=(col=colkey))

If the problem has changed then perhaps a new posting with a subject 
line that matches the question and content that is self-contained would 
be more effective.

-- 
David Winsemius

>    
>   ?plot.im
>   Z <- setcov(owin())
>   plot(Z) .................... etc
> 
>   However I can not reproduce this example in my problem. How I can
>   change my data matrix 'dat' to 'Z' ? 
>    
>   If anyone show me some light it would be great for me.
>    
>   Regards,
>   
> Megh Dal <megh700004 at yahoo.com> wrote:
>   
> 
> 
> Roy Mendelssohn <Roy.Mendelssohn at noaa.gov> wrote:  Date: Thu, 28 Feb
> 2008 20:55:23 -0800 From: Roy Mendelssohn <Roy.Mendelssohn at noaa.gov>
> Subject: Re: [R] Fwd: Re: How to create following chart for
> visualizing multivariate time series
> To: Megh Dal <megh700004 at yahoo.com>
> 
> What you are after is a colorbar. There is a colorbar option in the
> GLAD package in Bioconductor.  See also the response at:  
> 
>   http://tolstoy.newcastle.edu.au/R/help/05/02/12896.html
>   
> 
>   
> 
>   HTH,
>   
> 
>   Roy M.
>   
>     On Feb 28, 2008, at 8:38 PM, Megh Dal 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/itlWO
>     vuuOtI/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. 
>   
> 
>   Regards,
>   
> 
>   
> 
>   
> 
>   
> 
>   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? 
>   
> 
>   
> 
>   Regards,
>