Multiple flow ScalarMaps

• To: visad-list@xxxxxxxxxxxxx
• Subject: Multiple flow ScalarMaps
• From: Russell Steicke <r.steicke@xxxxxxxxxx>
• Date: Wed, 3 Sep 2003 11:38:43 +0800

Hello,

I'm trying to put multiple fields on a display, each being displayed as
wind barbs.  This is for viewing multiple weather models.

So, there is multiple data on the display, of the form:

  ((X,Y)->(U1,V1))
  ((X,Y)->(U2,V2))

With ScalarMaps

  (U1->Flow1X)
  (V1->Flow1Y)
  (U2->Flow1X)
  (V2->Flow1Y)

I'd like to be able to control the length of the wind barbs separately
for each field, which is done via the FlowControls from
ScalarMap.getControl().  However, setting the flow scale for the U2 and
V2 ScalarMaps' FlowControls affects the length of the wind barbs for the
(U1,V1) data.

_From reading DisplayRendererJ3D.java and DisplayImpl.java it seems that
this is because Flow1X and Flow1Y are "single" DisplayRealTypes, and
there is only one instance of each per display.  Is there a way around
this?

Is it possible to set flow scale separately for different data on the
one display?

Thanks
Russell



-- 
Russell Steicke

-- Fortune says:
Life exists for no known purpose.

• Follow-Ups:
  • Re: Multiple flow ScalarMaps
    • From: Bill Hibbard