Hi Sohyoung,
> Now I am able to retrieve coordinate information by mouse point click. I
> would like to know whether there are examples which is implementing
> retrieving metadata relevant to the clicked data point.
You need to transform the graphics coordinates into data
coordinates, and then look up data values or associated
metadata values in data objects. See the questions at:
http://www.unidata.ucar.edu/staff/russ/visad/msg01416.html
and the answers in:
http://www.unidata.ucar.edu/staff/russ/visad/msg01439.html
and the second half of:
http://www.unidata.ucar.edu/staff/russ/visad/msg00862.html
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