> The lines will have to come from Data that makes lines, such
> as a Set with manifold dimension = 1 or a FlatField with a
> domain Set with manifold dimension = 1 (the lines don't look
> like iso-lines).
1. In the attached test case (LineTest2) I added a line to my view. In
that example I
just put the height values in, but how could I calculate the real
values. In the example I would need the height values of the
Irregular2DSet set for example at a specific x or y position.
2. Additionaly I am not only interested in profiles parallel to x and y. I
am also interestes in profiles along a line through the x,y plane.
3. I tried to create a ConstantMap with a derivation of a xheight
Irregular2DSet. That one is giving me the shape of the layer from the
side. Thats unforetunately not what I want as well.
Sorry, I think I am still digging in the wrong direction.
Given such Data, you can make thick lines
> with ConstantMaps to LineWidth. You can put each set of lines
> on a different ZAxis level with ConstantMaps to ZAxis.
Or if
> you want line z level to vary with terrain, you can resample
> your terrain FlatField to Sets over the (x, y) domain and with
> manifold dimension = 1. These resample() calls will produce
> FlatFields, and you can adjust their z level (to create distinct
> layers) by adding offsets to their getFloats() values, then
> passing back to their setSamples() methods.
Hm, I tried something:
Linear1DSet set1D = new Linear1DSet(x,0,15,5);
FlatField terrain_new
(FlatField) terrain.resample(set1D,Data.WEIGHTED_AVERAGE,Data.NO_ERRORS);
That gives me the following error:
Exception in thread "main" visad.SetException: FlatField.resample: bad Set
Dimen
sion
at visad.FlatField.resample(FlatField.java:3260)
at LineTest3.<init>(LineTest3.java:88)
at LineTest3.main(LineTest3.java:166)
Is there an example somewhere, where something similar is done?
Can I resample a thing with 2 dimension to one with 1 dimension? See
LineTest3.java
I have still to create 2 dimensions, right? But where do I get the
manifold dimension 1?
Thank your very much for your help again.
Desiree
>
> Good luck,
> Bill
>
>
// Import needed classes
import visad.*;
import visad.util.*;
import visad.java3d.DisplayImplJ3D;
import java.rmi.RemoteException;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class LineTest2{
// Declare variables
// The domain quantities longitude and latitude
// and the dependent quantity rgbVal
private RealType x,y,height;
// Tuple to pack x and y together
private RealTupleType xy;
// The function (domain_tuple -> rgbVal )
private FunctionType terrain_type;
// Our Data values for the domain are represented by the Set
private Set set;
// The Data class FlatField
private FlatField terrain;
// The DataReference from data to display
private DataReferenceImpl data_ref;
// The 2D display, and its the maps
private DisplayImpl display;
private ScalarMap hoxmap,reymap,heightmap;
public LineTest2(String []args)
throws RemoteException, VisADException {
// Create the quantities
// Use RealType(String name, Unit unit, Set set);
RealType x = RealType.getRealType("x");
RealType y = RealType.getRealType("y");
RealType height = RealType.getRealType("height");
xy = new RealTupleType(x, y);
RealTupleType xheight = new RealTupleType(x, height);
terrain_type = new FunctionType( xy, height);
FunctionType line_type = new FunctionType(x,height);
FunctionType test_type = new FunctionType(xheight,y);
Linear1DSet line_set = new Linear1DSet(x, 0.0, 15.0, 5);
float[] eastValues = {1,2,7,7,13};
float[] northValues = {3,8,1,6,3};
float[] heightValues = {1,2,3,2,1};
set = new Irregular2DSet(xy,new float[][] {eastValues, northValues});
Irregular2DSet settest = new Irregular2DSet(xheight,new float[][]
{eastValues, heightValues});
FlatField test_vals_ff = new FlatField(test_type, settest);
test_vals_ff.setSamples(new float[][] {northValues});
FlatField line_vals_ff = new FlatField(line_type, line_set);
line_vals_ff.setSamples(new float[][] {heightValues});
// Create a FlatField
// Use FlatField(FunctionType type, Set domain_set)
terrain = new FlatField( terrain_type, set);
// ...and put the rgbVal values above into it
// Note the argument false, meaning that the array won't be copied
terrain.setSamples(new float[][] {heightValues});
//slope
FlatField slope_vals_ff;
slope_vals_ff = (FlatField) test_vals_ff.derivative(height,
Data.NO_ERRORS );
// Get the funtionc from the FlatField for slope
FunctionType func_domain_slope =
((FunctionType)slope_vals_ff.getType());
// "slope" is a RealType;
RealType slope = (RealType) func_domain_slope.getRange();
// Create Display and its maps
// This is new: a 3D display
display = new DisplayImplJ3D("display1");
// Get display's graphics mode control and draw scales
GraphicsModeControl dispGMC = (GraphicsModeControl)
display.getGraphicsModeControl();
dispGMC.setScaleEnable(true);
// Create the ScalarMaps: latitude to XAxis, longitude to YAxis and
// rgbVal to ZAxis and to RGB
// Use ScalarMap(ScalarType scalar, DisplayRealType display_scalar)
hoxmap = new ScalarMap( x, Display.XAxis );
reymap = new ScalarMap( y, Display.YAxis );
heightmap = new ScalarMap( height, Display.ZAxis );
// Add maps to display
display.addMap( hoxmap );
display.addMap( reymap );
display.addMap( heightmap );
heightmap.setRange(0,15);
hoxmap.setRange(0,15);
reymap.setRange(0,15);
// Create a data reference and set the FlatField as our data
data_ref = new DataReferenceImpl("data_ref");
data_ref.setData( terrain );
DataReferenceImpl data_ref3 = new DataReferenceImpl("data_ref3");
data_ref3.setData( line_vals_ff );
display.addReference(data_ref3);
DataReferenceImpl data_ref2 = new DataReferenceImpl("data_ref2");
data_ref2.setData( slope_vals_ff );
display.addReference(data_ref2);
//DataReferenceImpl data_ref4 = new DataReferenceImpl("data_ref4");
//data_ref4.setData( test_vals_ff );
//display.addReference(data_ref4);
// Add reference to display
display.addReference( data_ref );
// Create application window and add display to window
JFrame jframe = new JFrame("VolumeTest1");
jframe.getContentPane().add(display.getComponent());
// Set window size and make it visible
jframe.setSize(300, 300);
jframe.setVisible(true);
}
public static void main(String[] args)
throws RemoteException, VisADException
{
new LineTest2(args);
}
}
// Import needed classes
import visad.*;
import visad.util.*;
import visad.java3d.DisplayImplJ3D;
import java.rmi.RemoteException;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class LineTest3{
// Declare variables
// The domain quantities longitude and latitude
// and the dependent quantity rgbVal
private RealType x,y,height;
// Tuple to pack x and y together
private RealTupleType xy;
// The function (domain_tuple -> rgbVal )
private FunctionType terrain_type;
// Our Data values for the domain are represented by the Set
private Set set;
// The Data class FlatField
private FlatField terrain;
// The DataReference from data to display
private DataReferenceImpl data_ref;
// The 2D display, and its the maps
private DisplayImpl display;
private ScalarMap hoxmap,reymap,heightmap;
public LineTest3(String []args)
throws RemoteException, VisADException {
// Create the quantities
// Use RealType(String name, Unit unit, Set set);
RealType x = RealType.getRealType("x");
RealType y = RealType.getRealType("y");
RealType height = RealType.getRealType("height");
xy = new RealTupleType(x, y);
RealTupleType xheight = new RealTupleType(x, height);
terrain_type = new FunctionType( xy, height);
FunctionType line_type = new FunctionType(x,height);
FunctionType test_type = new FunctionType(xheight,y);
Linear1DSet line_set = new Linear1DSet(x, 0.0, 15.0, 5);
float[] eastValues = {1,2,7,7,13};
float[] northValues = {3,8,1,6,3};
float[] heightValues = {1,2,3,2,1};
set = new Irregular2DSet(xy,new float[][] {eastValues, northValues});
Irregular2DSet settest = new Irregular2DSet(xheight,new float[][]
{eastValues, heightValues});
FlatField test_vals_ff = new FlatField(test_type, settest);
test_vals_ff.setSamples(new float[][] {northValues});
FlatField line_vals_ff = new FlatField(line_type, line_set);
line_vals_ff.setSamples(new float[][] {heightValues});
// Create a FlatField
// Use FlatField(FunctionType type, Set domain_set)
terrain = new FlatField( terrain_type, set);
// ...and put the rgbVal values above into it
// Note the argument false, meaning that the array won't be copied
terrain.setSamples(new float[][] {heightValues});
Linear1DSet set1D = new Linear1DSet(x,0,15,5);
FlatField terrain_new = (FlatField)
terrain.resample(set1D,Data.WEIGHTED_AVERAGE,Data.NO_ERRORS);
//slope
FlatField slope_vals_ff;
slope_vals_ff = (FlatField) test_vals_ff.derivative(height,
Data.NO_ERRORS );
// Get the funtionc from the FlatField for slope
FunctionType func_domain_slope =
((FunctionType)slope_vals_ff.getType());
// "slope" is a RealType;
RealType slope = (RealType) func_domain_slope.getRange();
// Create Display and its maps
// This is new: a 3D display
display = new DisplayImplJ3D("display1");
// Get display's graphics mode control and draw scales
GraphicsModeControl dispGMC = (GraphicsModeControl)
display.getGraphicsModeControl();
dispGMC.setScaleEnable(true);
// Create the ScalarMaps: latitude to XAxis, longitude to YAxis and
// rgbVal to ZAxis and to RGB
// Use ScalarMap(ScalarType scalar, DisplayRealType display_scalar)
hoxmap = new ScalarMap( x, Display.XAxis );
reymap = new ScalarMap( y, Display.YAxis );
heightmap = new ScalarMap( height, Display.ZAxis );
// Add maps to display
display.addMap( hoxmap );
display.addMap( reymap );
display.addMap( heightmap );
heightmap.setRange(0,15);
hoxmap.setRange(0,15);
reymap.setRange(0,15);
// Create a data reference and set the FlatField as our data
data_ref = new DataReferenceImpl("data_ref");
data_ref.setData( terrain );
DataReferenceImpl data_ref3 = new DataReferenceImpl("data_ref3");
data_ref3.setData( line_vals_ff );
display.addReference(data_ref3);
DataReferenceImpl data_ref2 = new DataReferenceImpl("data_ref2");
data_ref2.setData( slope_vals_ff );
display.addReference(data_ref2);
//DataReferenceImpl data_ref4 = new DataReferenceImpl("data_ref4");
//data_ref4.setData( test_vals_ff );
//display.addReference(data_ref4);
// Add reference to display
display.addReference( data_ref );
// Create application window and add display to window
JFrame jframe = new JFrame("VolumeTest1");
jframe.getContentPane().add(display.getComponent());
// Set window size and make it visible
jframe.setSize(300, 300);
jframe.setVisible(true);
}
public static void main(String[] args)
throws RemoteException, VisADException
{
new LineTest3(args);
}
}
