When the anchor points are determined, you can either connect them by interpolation or fit them.
Picking anchor points usually involves three steps: Origin also offers an advanced baseline-creation mechanism to let users manually pick anchor points and subsequently interpolate or even fit them to make the baseline. Origin provides several options to allow automatic determination of the baseline, and allows for additional adjustment of the associated parameters where needed. Set your Goal to Fit Peaks (Pro)(available in OriginPro) to initiate the process. When the wizard opens, a preview window is automatically generated in order to provide real-time monitoring of the fitting process. To open the Peak Analyzer wizard, you need to go to the menu Analysis:Peaks and Baseline: Peak Analyzer. Later you can choose to subtract it or fit it while fitting the peaks. If the data comes with a non-constant baseline, the Peak Analyzer would be useful to detect the baseline.
You can download this OPJ file ( Peak_Deconvolution.zip, 22.7KB) to learn how to perform peak deconvolution. We have put together an Origin Project (OPJ) that includes two folders: the Multiple Peak Fit Tool folder and Peak Analyzer folder. Origin provides two tools to perform peak “deconvolution”, depending upon the existence of a baseline. “Deconvolution” is a term often applied to the process of decomposing peaks that overlap with each other, thus extracting information about the “hidden peak”.