Hi, I'm using Tchart to draw contour lines for some data. I wonder if there's any way for me to indicate altitude for each contour line. just like this image : http://www.wretch.twbbs.org/album/show.php?i=akachan&b=17&f=1096353413.jpg&p=0 or this website http://www.pixnet.net/displayimage.php?pos=-3...