An indispensable tool for the analysis of multi-peak data sets.
Origin 8.1 and OriginPro 8.1 include the Peak Analyzer, which is capable of analyzing data sets exhibiting multiple peaks. Peak analysis is frequently required by researchers in chromatography, spectroscopy, engineering, pharmacology, among other fields.
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The Peak Analyzer offers a wizard-based interface to walk you through the steps of advanced peak analysis. Supported analyses include:
- Baseline creation
- Peak finding
- Peak integration
- Peak fitting (OriginPro only)
In OriginPro, the peak fitting capability of the Peak Analyzer allows you to perform highly accurate nonlinear least squares curve fitting to multi-peak datasets using our many built-in functions or your own user-defined functions.
There is another advanced analysis tool, the NLFit tool, which can be used to find peaks and perform fitting to the peaks. However, the Peak Analyzer outshines the NLFit tool in peak fitting in the following aspects:
- The Peak Analyzer is capable of fitting the Baseline, while the NLSF tool cannot.
- You can use different peak functions for various peaks in the Peak Analyzer, while the NLSF tool only allows using replicas of one function to fit all peaks.
Settings in the Peak Analyzer can be saved as a theme. Then you reuse these settings in the Peak Analyzer dialog easily by loading the theme. Additionally, you can use the settings in a theme programmatically from LabTalk script. This makes it possible to perform batch processing with the Peak Analyzer.
Note: The Peak Analyzer can be viewed as a combination of a few tools that were provided in previous versions of Origin and OriginPro, including the former Peak Fitting Module (PFM), the Baseline tool and the Pick Peaks tool. However, many improvements have been applied so that the algorithms are more robust and the tool is easier to use.
The Peak Analyzer is intuitive and easy to use.
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The Peak Analyzer is easy to use due to its specially-designed wizard interface. The wizard guides you through the entire analysis process, from goal selection to report generation.
The top side of the Analyzer is a color-coded map that lists logically ordered pages and presents an overview of the entire analysis sequence. The color of a page name shows you whether the page has been visited. By clicking on the page icons in the map, you can go to any page of the wizard.
The center portion of the Analyzer features buttons that allow you to navigate among the pages in the wizard.
The lower side of the Peak Analyzer enables you to customize the computation options for controlling the analysis that is performed in each page. When you move forward to a later page, the analysis is carried out and you can see the effects of the computation options on the preview graph.
The Peak Analyzer guides you through each step in the peak analysis procedure.
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Click on the image to see a sample report
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You can carry out different analysis routines with the Peak Analyzer, depending on the goal you choose when your start the Peak Analyzer. Available goals include:
- Create Baseline--Automatically creates a series of baseline anchor points and then connects them to form a baseline. Options are provided to manually manipulate the baseline.
- Find Peaks--Lets you create a baseline, optionally subtract it from the spectrum data, and then find the peaks using any one of five different methods. Markers and labels can be displayed to denote the peak height and center.
- Integrate Peaks--Includes the Find Peaks features plus the ability to calculate the area under each peak. Additional calculations can be reported such as the FWHM, left and right half widths, and peak centroid.
- Fit Peaks (OriginPro only)--Performs all of the functions of Integrate Peaks, plus includes the ability to fit your spectrum data. Graphical, as well as tabular results can be generated after the peak fit has completed. (Click here to learn more...)
After a goal is selected, the Peak Analyzer orders several pages logically and guides you through all steps of the analysis process. You can see the pages that are included in the wizard and their ordering in the wizard map, which is displayed in the top side of dialog. These pages will help you to complete the analysis step-by-step. You can move forward by clicking the Next button on each page or clicking on a page icon in the wizard map.
The Peak Analyzer is engineered to save you valuable time.
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Click on the image to see an example
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The Peak Analyzer is a specially-designed wizard that allows easy navigation among the pages in the wizard. When using the Peak Analysis Wizard, you can go back to any previous pages to modify the options. Each adjustment can be made without the need to restart your entire analysis session.
Although all steps that might be needed in the analysis are listed in the wizard map after a goal is selected, it is not necessary to go through all these steps. You are allowed to skip any pages and let the Peak Analyzer perform the analysis in these steps with the default options.
All settings in the Peak Analyzer can be saved as a theme for later use. If you want to apply the analysis with the same settings, you are only required to open the Peak Analysis Wizard, load the theme and click the Finish button to carry out the whole process. Even if you want to perform analysis with slightly different options, you can use the theme file -- simply load your theme in the Peak Analyzer dialog, go to the page where changes should be applied, make the modification, and click the Finish button. The analysis will be performed with the altered options.
When curve fitting is performed with the Peak Analyzer, you are allowed to choose from several popular built-in functions to fit the peaks that are detected in the input data. If these functions are used, the parameters can be automatically initialized. It is not necessary to adjust the parameters manually.
Additionally, you may opt to use the wizard's automatic baseline and peak-detection algorithms to define a baseline or to find peak centers and heights. The newly-implemented second derivative and residual after first derivative methods are even capable of locating hidden peaks to expedite the peak detection, exempting you from locating the hidden peaks manually.
View examples: