May be you could plot simultaneously an additionnal curve (well... a constant line). Use a build array function to feed the graph with both the signal and the threshold value. As shown in this example ?
C:\Documents and Settings\Administrateur\Local Settings\Temp\Example_BD.png
Message Edité par chilly charly le
11-12-2007 10:22 PM
Chilly Charly (aka CC)