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

From: Megh Dal <megh700004_at_yahoo.com>
Date: Sat, 15 Mar 2008 00:58:02 -0700 (PDT)


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 :    

  ?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/itlWOvuuOtI/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,      


        
        
  

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  --
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  +1 513 646 9390   

  What is the problem you are trying to solve? Tell me what you want to   do, not how you want to do it.         


  

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  "The contents of this message do not reflect any position of the U.S. Government or NOAA."

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  Supervisory Operations Research Analyst   NOAA/NMFS
  Environmental Research Division
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  e-mail: Roy.Mendelssohn_at_noaa.gov (Note new e-mail address)   voice: (831)-648-9029
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