Hi Mike,
Try something like this:
float zplane = ... // the z value of the plane
// first compute the x and y extents of the data
// to get bounds for a Set in the z plane
float xmin = Float.MAX_VALUE;
float xmax = Float.MIN_VALUE;
float ymin = Float.MAX_VALUE;
float ymax = Float.MIN_VALUE;
for (int i=0; i<MAX; i++) {
if (threeDsamples[0][i] < xmin) xmin = threeDsamples[0][i];
if (threeDsamples[0][i] > xmax) xmax = threeDsamples[0][i];
if (threeDsamples[1][i] < ymin) ymin = threeDsamples[1][i];
if (threeDsamples[1][i] > ymax) ymax = threeDsamples[1][i];
}
// create the samples for the Set
float[][] plane = new float[3][NUM * NUM];
int k = 0;
for (int i=0; i<NUM; i++) {
for (int j=0; j<NUM; j++) {
plane[0][k] = xmin + (xmax - xmin) * i / (NUM - 1.0f);
plane[1][k] = ymin + (ymax - ymin) * j / (NUM - 1.0f);
plane[2][k++] = zplane;
}
}
// construct a Gridded3DSet with manifold dimension = 2
// whose N * N samples lie on a plane at z = zplane
Gridded3DSet plane_set
new Gridded3DSet(grid_type.getDomain(), plane, NUM, NUM);
// resample the FlatField to plane_set
FlatField fplane = f.reample(plane_set, Data.WEIGHTED_AVERAGE,
Data.NO_ERRORS);
// now construct a Gridded2DSet in purely (x, y)
float[][] plane2 = {plane[0], plane[1]};
RealTupleType xy = new RealTupleType(x, y};
Gridded2DSet xy_set = new Gridded2DSet(xy, plane2, NUM, NUM);
FuntionType xy_grid_type = new FunctionType(xy, w);
FlatField fxy = new FlatField(xy_grid_type, xy_set);
// copy the range values from fplane to fxy
fxy.setSamples(fplane.getValues());
// now display fxy with MathType ((x, y) -> w)
// and resampling values from the original FlatField on
// the plane z = zplane
x.setData(fxy); // instead of setData(f);
I haven't compiled or run this code, so there may be a few bugs but
the basic idea is right, I think. Please let me know if you have
problems.
Cheers,
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
