From: Megh Dal <megh700004_at_yahoo.com>

Date: Sat, 15 Mar 2008 10:54:54 -0700 (PDT)

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Date: Sat, 15 Mar 2008 10:54:54 -0700 (PDT)

Thanks David, It is working. Holtman's also gave me a solution but, I wanted to have a color pallet for description of colors, that was not in his solution.

However I need one small modification. If I want to plot only lower diagonal elements of 'dat' then how should I proceed? What I want is, to visualize only lower diagonal elements and having the color pallet on them only. Also upper diagonal element should be black only, irrespective of their value, as given in : http://bp0.blogger.com/_k3l6qPzizGs/RvDVglPknRI/AAAAAAAAAKo/itlWOvuuOtI/s1600-h/pairwise_kl_window60.png

Previously I tried with image() function [however there is also no option to put a color pallet :( ], there is a option 'zlim' to trim the not-required values. Is there any option in levelplot() function as well? I already gone through it's help file, however got nothing on that

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

Subject: Re: How to create following chart for visualizing multivariate time series
To: r-help_at_stat.math.ethz.ch

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,

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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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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Roy Mendelssohn

Supervisory Operations Research Analyst

Environmental Research Division

Southwest Fisheries Science Center

1352 Lighthouse Avenue

Pacific Grove, CA 93950-2097

e-mail: Roy.Mendelssohn_at_noaa.gov (Note new e-mail address)
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