How nice to hear from you, Ugo. Hope you are well.
Your tutorial is still the starting point for VisAD
documentation.
You can call setSamples() for a FlatField with range type:
( (x,y) , temp, pressure, ...)
just as you would for a FlatField with range type:
( x,y, temp, pressure, ...)
That is, setSamples(), getValues() and getFloats() all ignore
any grouping of subsets of range RealTypes into "inner"
RealTupleTypes.
Cheers,
Bill
----- Original Message -----
From: "Ugo Taddei"
To: visad@xxxxxxxxxxxxxxxx
Subject: [visad] Question on TupleTypes
Date: Mon, 18 Aug 2008 21:23:55 +0200 (CEST)
Hello,
I'm using VisAD to model database tables and have a question.
Let a db table have an id, an x and an y coord, and a few other
fields
like temperature, pressure etc.
I create a MathType like
(id -> (x,y,temp,pressure,...)
(that is RealType -> (RealTupleTypes)).
Used a Linear1DSet as domain of a FlatField and got the points all
right
on the display. Here a snippet:
TupleType range_tuple = ...;
RealType index = RealType.getRealType( "id" );
FunctionType func_i_xy = new FunctionType( index, range_tuple );
Set index_set = new Integer1DSet(index, count);
FlatField vals_ff = new FlatField( func_i_xy, index_set );
vals_ff.setSamples( vals);
Now I have another type of geometry, rather than single points, much
like
the 2D Set found in Region.java, which defines a polygon:
int[][] tris = DelaunayCustom.fill(samples);
DelaunayCustom delaunay = new DelaunayCustom(samples, tris);
Irregular2DSet region =
new Irregular2DSet(earth, samples, null, null, null, delaunay);
which I also want to fill.
So I changed the type to
(id ->( (x,y) , temp, pressure, ...))
(x,y) is a RealTupleType.SpatialCartesian2DTuple, whereas the other
fields
are RealTypes (defined by float[][]).
To the question: what method setSample do I need? If that makes sense
at
all. Or do I have to wrap ((x,y),temp,pressure,...) in some
visad.Data
object?
Thanks in advance,
Cheers,
Ugo
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