Re: 2d dimensional sets

Hi Karl,

Thanks for clarifying. There isn't a "natural way" to do
this, in the sense of some set of ScalarMaps that will
make these images given FlatFields with MathType (x -> y),
as this data appears to be.

You'll probably need to compute derived data for both plots,
and there are a number of choices. You might compute a
FieldImpl with MathType:

  (index -> (r, g, b, Set(x, y)))

where there are as many index values as there are different
colors in you plot, and the Set(x, y) defines the shape
filled by each color. The Sets would be Gridded2DSets with
dimensions 2 x number_of_temperatures, the 2 for the bottom
and top y values.

Good luck,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html


On Thu, 23 Jan 2003, Karl Eibisberger wrote:

> Hi Bill
>
> I think (actually I know, because I asked him..) Thomas' problem is another 
> one.
>
> The question is:
> How to fill the gap or space between functions (simple polylines) with 
> distinct colors? E.g. There are a few functions and he want to fill the gap 
> between X-axis and first function with blue, the gap between first and second 
> function with red and so on...like he showed in the file example.pdf.
>
> http://www.isis-gmbh.at/data/visad/example.pdf.
>
> It sounds quite simple, but we didn't find a hint in the docs and examples to 
> solve that.
> (The only idea I found is, to construct a 3d-graph where the 3rd dimension is 
> mapped to a color, and display the graph in an elevation, that shows the 
> other two dimensions only. But I feel, that there is maybe a more "natural" 
> solution for that problem, perhaps using another DisplayRenderer or similar)
>
>
> We would be greatful, if you can help us with some clues...
>
> Bye
> Karl
>
>