<HTML><P>Hi, there, </P>
<P>According to VisAD Java Component Library Developer Guide (<A
href="http://www.ssec.wisc.edu/~billh/guide.html#3.10";>http://www.ssec.wisc.edu/~billh/guide.html#3.10</A>),
"Most Data classes and metadata classes (of FlatField) are immutable", does it
mean that users cannot interactively change the sample of a FlatField? In other
words, is the following job possible?</P>
<P>Suppose we have an isoContour, is it possible to allow the user
to change the isoline by clicking mouse button? Since the isoContour is related
to the sample of the FlatField, the above question is equivalent to change the
sample of the field. Is that possible? If so, can anyone give me an instruction
how to do it?</P>
<P>thanks,</P>
<P>Kan</P>
<P> </P></HTML>
