405 Waverley St Palo Alto
Grafiti LLC
General Features
The product features for PeakFit are detailed below in the following categories:
Data Input
- ASCII
- Excel®
- Lotus 123®
- Quattro Pro®Windows®
- SigmaPlot®
- AIA Chromatography
- dBase ® III+, IV
- DIF
- ASCII and Spreadsheet – like Editors
- Averaging Digital Filter
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
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 V ariable Widths and/or Shape in a single step
Non-Linear Curve Fitting
- Marquardt – Levenburg Algorithm
- 83 built-in nonlinear peak models
- 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
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