--On August 04, 2004 05:28:35 PM <[EMAIL PROTECTED]> wrote:
I would like to display field of data which has a circle like shape in the center without data points.
For points within your circle, set their data value (what you call Z) to a value out of the range of your other data (e.g., -1). Then, use the Include module to mark points with that value invalid.
Kent
