Path: csiph.com!weretis.net!feeder6.news.weretis.net!feeder5.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Karl Ratzsch Newsgroups: comp.graphics.apps.gnuplot Subject: Re: Best fit point in contour plots using Gnuplot Date: Tue, 20 Nov 2018 13:06:52 +0100 Organization: solani.org Lines: 23 Message-ID: References: <7f45f7f2-7355-4a87-86c8-100de899e262@googlegroups.com> <39d92ec1-e638-4fa2-b513-7d1afceb5b19@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Trace: solani.org 1542715612 29963 127.0.0.43 (20 Nov 2018 12:06:52 GMT) X-Complaints-To: abuse@news.solani.org NNTP-Posting-Date: Tue, 20 Nov 2018 12:06:52 +0000 (UTC) User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 In-Reply-To: <39d92ec1-e638-4fa2-b513-7d1afceb5b19@googlegroups.com> Content-Language: en-GB X-User-ID: eJwFwYEBwCAIA7CXwEkZ51gL/59gEh8cNzcCOyamE5hRtSR25uK17ONSF7cuKq18fhoX/fABSI8SiA== Cancel-Lock: sha1:i+ri+b81lsA9WfdvJnJGu9VGGw4= Xref: csiph.com comp.graphics.apps.gnuplot:4070 Am 20.11.2018 um 11:34 schrieb srishtinagu19@gmail.com: > ..... I just tried it set view map... it worked... Thank you. > > Also I want to know does gnuplot automatically calculates the 1,2,3.. sigma ranges ? > I have three columns.. x,y,z. For contour plot I am using the above commands with - > "$set cntrparam levels discrete 2.3,6.2,11.8" > which are 1,2 and 3 sigma levels respectively for 2 parameter correlation. If you say so ... > But in my z column these sigma values are not present still I am getting a plot.. I am confused that what does it mean ? gnuplot simply makes a surface with height z out of your xy-gridded datapoints, and then interpolates contour lines onto that at the specified levels. Neither gnuplot nor I know what "sigma" is. > What I know is- for particular z values of confidence levels contours are drawn for x and y for corresponding z values set by the user.. Am I correct ? > Confidence levels of what? I repeat, I am NOT clairvoyant. I cannot read your mind. Contours are made by a straightforward interpolation, there is no stochastic element.