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

From: David Winsemius <dwinsemius_at_comcast.net>
Date: Sat, 15 Mar 2008 14:57:45 +0000 (UTC)

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,
>
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Received on Sat 15 Mar 2008 - 15:03:04 GMT

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