Hi Mike,
I'm pretty sure that the cause of your problem is the
lack of a call to addMap. You can fix it by inserting
a call to addMap as follows:
Scalarmap scm = new Scalarmap(x, Display.SelectValue);
display.addMap(scm);
VisADSlider vslider = new VisADSlider(scm, 0.0f, 1.0f);
I have added a check for this inside of VisADSlider to
give a better error message.
Please let me know if the addMap call does not solve your
problem.
By the way, you can better error messages by running under
jdb, as in:
jdb myclass
> run myclass
When you get an Exception, what we really like to see is
a stack trace from jdb that includes line numbers.
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
