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Re: Basics of SHADE_VOLUME [message #43359 is a reply to message #43358]

Thu, 07 April 2005 14:22

Leslie Welser
Messages: 11
Registered: March 2005

Junior Member

Actually, I don't think your 3-d scatter plot will work for me in this
case (although I have used it before on another project, and it worked
great!). The reason is that what I have is actually a 3-d array which
represents a wavefunction in space, phi=dblarr(192,192,192). It is 3-d
because at each {x,y,z} point, there is a magnitude for phi. So I
guess the problem is really that I'm trying to represent a 4-d surface
(3 dimensions for the x,y,z and 1 for the actual value of the array).
I thought that using shade_volume would work for this, since it accepts
a 3-d array as input. But the result looks about how you described it.
I noticed that on your website, you have an example (MRI images) where
you said to choose an isosurface of 50 and then you said that "the
surface will enclose the volume values greater than 50". That's where
I got the crazy idea to set the isosurface value as the minimum value
of my dataset. But I think there is still something that I'm
missing....

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[Message index]

		Re: Basics of SHADE_VOLUME By: David Fanning on Thu, 07 April 2005 14:41
		Re: Basics of SHADE_VOLUME By: Leslie Welser on Thu, 07 April 2005 14:22
		Re: Basics of SHADE_VOLUME By: David Fanning on Thu, 07 April 2005 12:44

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