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Passing through origin

 
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ykw123456



Joined: 13 Feb 2009
Posts: 1

PostPosted: Fri Feb 13, 2009 12:37 pm    Post subject: Passing through origin Reply with quote

Hi, I am plotting a graph with 11 points including a point (0,0) and I would like to plot a graph with the best straight line of all the 11 points but at the same time passing through the origin (zero point), it is possible to do so? because if I click the button "curve fit" the line produced doesn't pass through origin. thank you!
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DPlotAdmin
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Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Fri Feb 13, 2009 6:40 pm    Post subject: Reply with quote

You'll need to use the "More curve fit" plugin on the Generate menu, rather than the "Polynomial Curve Fit" command. Click the "Initial Values/Constraints" button. Enter 0 for A, and check the adjacent "Hold" box.
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