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Re: Continuous colorbar [message #71545 is a reply to message #71543]

Mon, 28 June 2010 08:19

penteado
Messages: 866
Registered: February 2018

Senior Member
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On Jun 28, 11:35 am, zhangyehui <zhangye...@gmail.com> wrote:
> I want to draw a contour map of correlation coefficients with
> continuous color. As R varies between [-1, 1], I'd like those are
> close to 0 shown in white color and those are close to 1(-1) with
> darker colors. I usually use loadct colorbars. There are 41 colorbars.
> But I can't find a colorbar with a white color in the middle. So I
> just wondered if there is anyway I can do that. Thanks in advance.

Some of the Brewer tables have white in the middle, going to saturated
colors on different hues on each side. See

http://michaelgalloy.com/2008/08/21/another-update-to-the-br ewer-color-table-file.html

You can always make your own table, it is just an array with the RGB,
HLS or HSV values for each index. The tricky part is deciding on how
to vary the colors along the table, which has an important effect on
how the resulting visualization is perceived.

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[Message index]

		Re: Continuous colorbar By: zhangyehui on Mon, 28 June 2010 10:41
		Re: Continuous colorbar By: Michael Galloy on Mon, 28 June 2010 09:02
		Re: Continuous colorbar By: zhangyehui on Mon, 28 June 2010 08:43
		Re: Continuous colorbar By: David Fanning on Mon, 28 June 2010 08:42
		Re: Continuous colorbar By: penteado on Mon, 28 June 2010 08:19

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