MagicPlot Manual

Plotting and nonlinear fitting software

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spline

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spline [Fri Feb 25 13:45:29 2011]
Alexander
spline [Mon Jun 3 16:47:16 2013]
Alexander
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   * Double click on anchor point to remove it   * Double click on anchor point to remove it
  
-{{:​spline1.png|Using spline for baseline fitting}}+Set ''​Baseline''​ checkbox in spline row in fit curves table to subtract spline from data. 
 + 
 +{{:​spline1.png?nolink|Using spline for baseline fitting}}
  
 ===== Fitting with Spline ===== ===== Fitting with Spline =====
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 It is recommended to set appropriate fit intervals which contain only baseline without peaks. In such case ''​Fit One Curve''​ button is more acceptable than ''​Fit by Sum''​ button, because the individual interval for current curve will be used and the interval from ''​Fit Interval''​ tab (which is used to fit by sum of curves) is ignored. Select spline curve and set ''​Edit Interval''​ checkbox in the bottom of the panel to edit spline interval, then click on ''​Fit One Curve''​ button. The anchor point coordinates will be varied but the number of points will remain. You also can lock some parameters (usually //x// coordinates) by setting ''​Lock''​ checkboxes in parameters table. ​ It is recommended to set appropriate fit intervals which contain only baseline without peaks. In such case ''​Fit One Curve''​ button is more acceptable than ''​Fit by Sum''​ button, because the individual interval for current curve will be used and the interval from ''​Fit Interval''​ tab (which is used to fit by sum of curves) is ignored. Select spline curve and set ''​Edit Interval''​ checkbox in the bottom of the panel to edit spline interval, then click on ''​Fit One Curve''​ button. The anchor point coordinates will be varied but the number of points will remain. You also can lock some parameters (usually //x// coordinates) by setting ''​Lock''​ checkboxes in parameters table. ​
  
-Set ''​Baseline''​ checkbox in spline row in curves table to subtract spline from data. +{{:​spline2.png?nolink|Setting Fit Interval for spline curve}} {{:​spline3.png?nolink|Spline subtraction result}}
- +
-{{:​spline2.png|Setting Fit Interval for spline curve}} {{:​spline3.png|Spline subtraction result}}+
  
 ===== See Also ===== ===== See Also =====
spline.txt · Last modified: Sun Nov 8 12:21:24 2015 (external edit)