Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
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
visad archives: