Normalize scalar field

Forums Technical Discussion Normalize scalar field

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dulo: Member; 383 posts; Joined: June 2010; Offline

Jan. 27, 2015 1:35 p.m.

I have a volume and want to normalize the values min-max to 0-1
I did it with a python sop and numpy, but I thought I will better ask if there is a native houdini way to do that ?

www.woogieworks.at


Nima: Member; 471 posts; Joined: Nov. 2013; Offline

Jan. 27, 2015 2:32 p.m.

hello my friend.
you can use VOP SOP node.
see this image:

Attachments:
Normalize.jpg (49.1 KB)


dulo: Member; 383 posts; Joined: June 2010; Offline

Jan. 27, 2015 2:35 p.m.

Thanks for the Tip, but I have a 3D scalar field and want to find the minimum and the maximum Values of this scalar field and normalize the field that minimum becomes 0 and maximum becomes 1

www.woogieworks.at


eetu: Member; 606 posts; Joined: May 2007; Offline

Jan. 27, 2015 2:56 p.m.

Here's an example, the key is Volume Reduce SOP. There are a couple of extra nodes to get a scalar speed from vector velocity.

Attachments:
ee_field_normalize.hip (2.6 MB)


dulo: Member; 383 posts; Joined: June 2010; Offline

Jan. 27, 2015 3:43 p.m.

OK .. the volume reduce does the trick for min and max ..
but question :
whats the purpose of the
@name=speed
notation in the source group field
is it some kind of dynamic generated group ?

www.woogieworks.at

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