thresholdSensitivity {maskRangeR}

Sensitivity testing for thresholds

Description

Measure a number of reasonable thresholds and calculate areas based on these thresholds

Usage

thresholdSensitivity(
  datedOccs,
  maskLayer,
  maskClass,
  sdm,
  maskProjection = NULL,
  maskVal = NULL,
  selectedValue = NULL
)

Arguments

datedOccs

a 'SpatialPointsDataFrame' where one column is labeled 'date' and has class 'POSIXct', e.g., as obtained from using 'lubridate::parse_date_time'

maskLayer

the layer from which you will build the mask. Usually the most recent satellite derived raster

maskClass

either top5, aroundSelected, quants, or userSpecified. "top5" ranks the environmental values at occurrences and returns the 5 highest observed values."aroundSelected" selects two observed values above and two below a user-specified threshold value. "quants" returns quantile values as thresholds. "userSpecified" will take a list of values defined by the user.

sdm

previously generated species distribution model

maskProjection

(optional) a proj4string showing the projection of the maskLayer. If NULL, areas will be estimated using the raster package.

maskVal

(optional) a user defined value for thresholding when using the "aroundSelected" maskClass, or if "userSpecified", a list of thresholds to use.

selectedValue

(optional) a user selected value around which masks will be selected using the nearest two threshold on either side

Details

See Examples.

Value

returns a list containing two items. The first is a rasterstack of the masked distributions. The second item is a table of thresholds and areas

Author(s)

Peter Galante <[e-mail]>