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| Spatial Autocorrelation Analysis |
- Semivariance Analysis, including
- Isotropic and anisotropic (direction-dependent) variograms
- 4 types of isotropic and anisotropic variogram models
- Automatic model fitting, and / or user-specified
- Anisotropy maps, for quickly identifying anisotropy
- h-Scattergrams and Cloud variograms, for finding variogram outliers fast
- Other autocorrelation measures
- Correlograms
- Drift
- Covariograms
- Rodograms
- Madograms
- Standardized Variograms
- General Relative Variograms
- Pairwise Relative Variograms
- Moran's I
- Fractal Analysis
- Cross-variogram analysis, for covariate analysis prior to co-kriging
- Full control over lag class (separation distance) intervals and extent
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| Interpolation |
- Kriging, for optimal interpolation based on spatial dependence
- Block kriging, for interpolating a discrete area around interpolation points
- Punctual kriging, for interpolating discrete points
- Cokriging (both block and punctual), for more precise interpolations when a covariate is present
- Conditional Simulation
- Inverse and Normal Distance Weighting for classic nearest neighbor analysis
- Cross-validation (Jackknife) analysis, for comparing interpolated to known sample values
- Polygon masks of unlimited number and complexity
- Interpolation grids of any size
- 1d interpolation for temporal (time) data and linear transects
- Output compatible with ArcView® and other GIS and mapping programs (e.g. Surfer®)
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| Parametric Statistics |
- Sample means and variance
- Skewness and kurtosis, for determining departure from normality
- Frequency distributions
- Normal probability plots
- Cumulative frequency plots
- Frequency histograms
- Transformations for returning the data to normality
- Quantile scattergrams, to display values for sampled locations
- Regression analysis (variate vs. covariate)
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| Mapping |
- 2d and 3d projections of maps
- 1d graphs for transects and temporal data
- Maps of kriging estimation error
- Data postings
- Full control of size, axis labels, colors, contour intervals
- Rotation and zooming
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| Data Handling |
- Integrated data worksheet
- Huge data capacity - up to 2 billion records x 64 fields/columns
- Assign x, y, z, z2 columns easily among 64 possible columns
- Flexible input formats
- GeoEas, ArcView, Surfer formats
- Excel, DBase, Access files
- ASCII text files in user-defined format
- Flexible output formats
- ArcView, Surfer interpolation output formats for interpolation
- Graphics printed to any Windows device
- JPEG, GIF, PNG, Metafile graph output formats
- Missing values
- Permanent missing values handled gracefully
- Temporary missing values toggled on and off by user
- Data filter to exclude data ranges
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