Key words: peakfit, peak, fitting, software, peak, fit, software

PeakFit General Features

PeakFit Data Input
PeakFit Data Preparation
PeakFit Peak Autoplacement
PeakFit Non -Linear Curve Fitting
PeakFit Output and Export Options

PeakFit Data Input

• ASCII
• Excel®
• Lotus 123®
• Quattro Pro® Windows®
• SigmaPlot®
• AIA Chromatography
• dBase® III+, IV
• DIF
• ASCII and Spreadsheet - like Editors
• Averaging Digital Filter

PeakFit Data Preparation

• Gaussian Deconvolution to remove Spectrophotometer Instrument Response smearing
• Exponential Deconvolution to remove Chromatographic Detector Response smearing
• Smoothing (Savitsky Golay, FFT Filter, Loess, Gaussian Convolution)
• Real - time FFT/Time Domain Graphical Editor
• Dual Graph Data Sectioning with Graphical data point exclusion
• Non - Parametric Digital Filter to Filter or augment data
• Compare with Reference
• Subtract Baseline Imported from File
• Data Transforms
• Area Normalization
• Inspect Second and Fourth Derivatives
• Data Weighting

PeakFit Peak Autoplacement

• Automatic by Local Maxima and Residuals
• Automatic by Second Derivatives
• Automatic by Deconvolved Local Maxima
• Graphical Placement and Adjustments
• Manual Parameter Adjustments
• Share and Lock Parameters
• Constant or Variable Widths and/or Shape in a single step

PeakFit Non-Linear Curve Fitting

• Marquardt - Levenburg Algorithm
• Least - Squares and 3 Robust (Maximum Likelihood) methods
• Up to 100 Peaks and 1000 Parameters
• Intelligent Constraints to insure Fit Integrity
• Sparse Curvature Matrix for Faster Fitting
• Both Numeric and Graphical Fitting Options
• Zoom - in or Toggle Points during Fitting

PeakFit Output and Export Options

• File Export with full Generated Data: Lotus 123, Excel, Quattro Pro Windows, SigmaPlot and ASCII.
• Graphs to clipboard or file in BMP or WMF formats
• All Numeric data in Graph to Clipboard in Spreadsheet Format

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