Si Stu,
> First, please remind me how to create a set of pre-defined
> color tables, and apply them to a display. I found this
> much in the mail list archive:
>
> "you could try computing a color table:
>
> ColorControl control = (ColorControl) cmap.getControl();
> float[][] table = new float[3][256];
> for (int j=0; j<256; j++) {
> table[0][j] = ... // j-th red
> table[1][j] = ... // j-th green
> table[2][j] = ... // j-th blue
> }
> control.setTable(table);"
>
> then how do I use a ColorControl?
ScalarMap rgbMap = new ScalarMap(yourRealType, Display.RGB);
display.addMap(rgbMap);
ColorControl control = (ColorControl) rgbMap.getControl();
> And is there a VisAD example that shows how to
> create a cross section (2D display) for a plane
> across a 3D display? Are there pre-defined cross-sections
> like the old drafting elevation-plan-section, or is the
> cross section on an arbitrary plane?
There is no example in the distribution. You create a
Gridded2DSet with manifold dimension = 2 that defines a
grid of points on your plane slice, then resample() your
FlatField to that Gridded2DSet, then display the FlatField
returned by resample(). I think Doug Lindholm has done it
so you might talk to him - I know you guys work across the
street from each other ;)
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
