1)Try Sample
2) You can use Compute(mag)->Include (cull off)->Replace("invalid
positions") with the orginal field
Kate White <[EMAIL PROTECTED]>@opendx.watson.ibm.com on
06/22/2001 06:41:46 PM
Please respond to [email protected]
Sent by: [EMAIL PROTECTED]
To: <[email protected]>
cc:
Subject: Re: [opendx-users] glyphs
On Fri, 22 Jun 2001, David Thompson wrote:
> If your data is on a regular grid, just use Reduce. If it is
> scattered data, then you will have to come up with some other
> solution.
My data is on an irregular grid. Is there a sequence of modules I could
use to reduce? What about show positions? I tried running import through
show positions, then specifying every tenth one, but I got an error.
> >2) I would like to use the compute module (or any module which works)
to
> >take the length of each vector in the field and output a scalar field.
>
> Run your data through Compute and use the expression: mag(a)
>
> >
> >3) If (2) can be accomplished, I would like to make the autoglyphs plot
> >vectors based on magnitude.
>
> Not quite sure what you mean here. Once you have the magnitude, it is
> a single number with no direction. How would you know which direction
> for your vectors to point? Or is what your asking that you want them
> all normalized to length 1?
Once I have the magnitude of each vector, I would like to plot the vector
field using only those vectors from my field which have a certain
magnitude or greater. The scalar is still associated with the position
point of the vector, correct?
kate white
[EMAIL PROTECTED]
> >
>
