Species Distribution Modeling and Ecological Niche Modeling
Velocity of shifts in densities across a series of rasters
Vector outline of Canada
Compare two response curves along one or more predictors
Calculate the precision of a geographic coordinate
Number of points in a "spatial points" object
Custom coordinate reference system WKT2 string
Convert geographic coordinates in decimal format to degrees-minutes-se...
Convert geographic coordinates in degrees-minutes-second to decimal fo...
Calculate weights for a model
Movement of occupied cells in a given direction of a fixed point
Euclidean distance between a pair of points
Latitude of quantile(s) of the geographic abundance distribution
Scales predictors
Thin spatial points so that there is but one per raster cell
enmSdmX: Species distribution modeling and ecological niche modeling
Weighted AUC
Continuous Boyce Index (CBI) with weighting
Calculate multivariate weighted AUC
Weighted thresholds for predictions
Thresholded evaluation statistics
Weighted Tjur's R2
Weighted True Skill Statistic (TSS)
Convert extent to a spatial polygon
Assign geographically-distinct k-folds
Assign geographically-distinct k-folds to background/absence sites
Thin geographic points deterministically or randomly
WKT string for a named coordinate reference system or a spatial object
Get or assign values to cells in a raster
"Friendly" wrapper for terra::global() for calculating raster statisti...
Interpolate values from a series of rasters
Generate rasters with cell values equal to cell longitude or latitude
Present-day climate rasters for Madagascar
Future climate rasters for Madagascar
Future climate rasters for Madagascar
Future climate rasters for Madagascar
Future climate rasters for Madagascar
Number of response data in a model object
Extract "most conservative" environments from points and/or polygons
Minimum convex polygon from a set of spatial polygons and/or points
Metrics of niche overlap
Create spatial polygon same size as a plot
Generic predict function for SDMs/ENMs
Predict a MaxEnt model object (with optional feature-level permutation...
Predictions from a MaxNet model
Plot response curves for one or more models
Sample random points from a raster with/out replacement
Convert SpatVector to Spatial*
Create a raster with square cells
Summarize distribution/niche model cross-validation object
Calibrate a boosted regression tree (generalized boosting machine) mod...
Calibrate a distribution/niche model using cross-validation
Calibrate an ensemble of small models
Calibrate a generalized additive model (GAM)
Calibrate a generalized linear model (GLM)
Calibrate a MaxEnt model using AICc
Calibrate a MaxNet model using AICc
Calibrate a natural splines model
Calibrate a random forest model
Troubleshooting parallel operations
Proximity-based weighting for occurrences to correct for spatial bias
Implements species distribution modeling and ecological niche modeling, including: bias correction, spatial cross-validation, model evaluation, raster interpolation, biotic "velocity" (speed and direction of movement of a "mass" represented by a raster), interpolating across a time series of rasters, and use of spatially imprecise records. The heart of the package is a set of "training" functions which automatically optimize model complexity based number of available occurrences. These algorithms include MaxEnt, MaxNet, boosted regression trees/gradient boosting machines, generalized additive models, generalized linear models, natural splines, and random forests. To enhance interoperability with other modeling packages, no new classes are created. The package works with 'PROJ6' geodetic objects and coordinate reference systems.