Re: can visad do...THIS?

• To: Rick <fewayne@xxxxxxxxxxxxxxxxx>
• Subject: Re: can visad do...THIS?
• From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
• Date: Thu, 6 Dec 2001 15:13:25 -0600 (CST)

Hi Rick,

> when i tried to do this in visad before, i managed to get displays that
> showed topography, and could get a display color-coding the water, but i
> couldn't map the latter onto the former as seen here.
> 
> am i working against the grain of visad here? if not, can somebody
> suggest an initial line of investigation?

If your topography and water are in two separate FlatFields
with MathTypes:

  ((x, y) -> elevation)

and:

  ((x, y) -> water_depth)

Then you can merge these using the static method of FieldImpl:

    public static Field combine( Field[] fields )

to get a FlatField with MathType:

  ((x, y) -> (elevation, water_depth))

Now if you use ScalarMaps:

  x -> XAxis
  y -> YAxis
  elevation -> ZAxis
  water_depth -> RGB

you should get the display you want.

Good luck,
Bill

• References:
  • can visad do...THIS?
    • From: Rick