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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 J.S.Schulte[/i] [br]Origin Pro 2025b: Operating System: Windows 11 Hello, I would like to automate curve fitting with a non-linear ExpDecay2 fit using direct weighting. The corresponding datasheet already contains x data (col(6)), y data (col(7), and weighting data (col(8)). I first tried to save the “direct weighting” option in a nlfit dialog design. However, this does not seem to be possible. When loading the corresponding saved design, the option "direct weighting" is deselected again under Data Selection. Is there a way to solve this with a LabTalk script? So far, I have not found a way to select “direct weighting” with the nlbegin command using the “weight:=” variable. I would be grateful for any ideas. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.