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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 bobsniggels[/i] [br]Origin Ver. and Service Release (Select Help-->About Origin): b9.4.0.220 Operating System: Windows Vista (64-bit) Hello I am using labtalk to fit my data and adjust the slope. I tried the following script to approach a slope of ~0. double XX = 0; col(h)=col(g)*XX; fitLR (1,9) N:=10; double slope = fitLR.b; loop(ff,1,100){ if(slope>0){ XX+=5E-6; col(h)=col(g)*XX; fitLR (1,9) N:=10; slope = fitLR.b; } } However, when I print the slope, it appears that the slope from the fit inside the loop stays the same for all iterations even though the plotted slope clearly changes. The problem is, that the adjustment of the slope wont stop at the desired point. Cheers, Peter [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.