Questions about Graph output

*To*: mathgroup at smc.vnet.net*Subject*: [mg49200] Questions about Graph output*From*: Daohua Song <ds2081 at columbia.edu>*Date*: Wed, 7 Jul 2004 01:42:39 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear Friends, (1)I saw several lines about how to save a graph in the forum before, but i can not catch the point. how does it work? plt1 = Plot[Sin[x], {x, 0, 2Pi}]; mydata = Flatten[Cases[plt1, Line[x__] -> x, Infinity], 1]; Export["mydata.txt", mydata, "CSV"]; (2) If i use implicit plot or contour plot, for example draw f[x,y]==Constant. My question is : how to save the curve to data points i can deal with(just like (1)), so i can work out the perimeter of this curve, area if it is closed etc. Thank you very much! Daohua

**Follow-Ups**:**Re: Questions about Graph output***From:*Yasvir Tesiram <yat@omrf.ouhsc.edu>