<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<font size="+1">Thank you Mike and Nicolas for your prompt replies.
I am astonished at the speed you were able to provide answers to a
problem I have been working on and off and with limited results
for a week! Mike, your function works beautifully on its own in
many instances, but it's in conjunction with Nicolas other
functions that it solves all my problems. I cannot be sure that
all my contour lines will be closed, but I am confident now that
the vast majority will be and that is good enough for my needs.<br>
Thanks again for your great help<br>
Bill<br>
<br>
</font>
</body>
</html>