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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by mohamed.ibrahim[/i] [br]Hi All, I would like to fit the data shown in the attached photo. The two plots are from two temperature sensors (resistance sensor) against time. From the figure, at one point, you can see the lines start to broaden. This happens due to high variation of the temperature (resistance of the sensor) at low temperatures. This broadening is actually a sin function variation with very small frequency 1.15Hz (0.0145 min). I would like to find the best fit or someway to find the average of these points to elimenate the broadening. Thanks[img]https://my.originlab.com/ftp/forum_and_kbase/Images/functions.png[/img] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.