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
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