From: Joseph Smidt <josephsmidt@gm...>  20090729 01:21:22

I have a function on a 2d grid that looks like a skewed mound. I would like to make a contour plot where each contour represents each sigma, or confidence interval. I.e. Is there a straight forward way to make such a contour plot where it is then easy to say: This line is 1sigma or 68% confidence interval, this line is 95% confidence interval, etc... Such plots look like this: http://lambda.gsfc.nasa.gov/product/map/current/pub_papers/threeyear/parameters/images/Med/ds_f07_PPT_M.png where the first region of each graph is the on sigma or 68% confidence interval and the second line is the 95% confidence interval. Thanks. Joseph Smidt   Joseph Smidt <josephsmidt@...> Physics and Astronomy 4129 Frederick Reines Hall Irvine, CA 926974575 Office: 9498243269 