calcClassDensities: Calculates density of observations for HSI suitability...
In qureshlatif/WoodpeckerHSI: Woodpecker habitat suitability models
Description
Usage
Arguments
Details
Value
Author(s)
Description
Calculates densities for fixed and distinct categories defined by habitat suitability index (HSI) breakpoints or thresholds. Used in the Woodpecker HSI package to calculate observed nest densities in suitability classes for plotting and mapping. The function could also be used to calculate density of any point observation within a study area, wherein values for a particular environmental variable or gradient are assessed at each observation and for each of a regularly spaced set of background pixels.
Usage
1
calcClassDensities(sampleHSI, bgroundHSI, thresholds, area)
Arguments
sampleHSI
Numeric vector of HSI values for observations (e.g., nest sites)
bgroundHSI
Numeric vector of HSI values for random background sample representing available sites
thresholds
Numeric vector of HSI breakpoints defining suitability classes
area
Numeric scalar representing the area surveyed
Details
Calculates the density of observations within suitability classes defined by breakpoints in 'thresholds'. Output is a table with each row corresponding with a suitability class and number of rows equal to the number of classes.
Value
Data frame with one row for each suitability class. Information provided are class parameters ("HSI.md" = median HSI, "HSI.st" = lower bound, "HSI.end" = upper bound) and the density of observations within each bin ("Density").
Author(s)
Quresh S. Latif, Rocky Mountain Research Station, U.S. Forest Service
qureshlatif/WoodpeckerHSI documentation built on May 29, 2019, 7:51 a.m.
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Description Usage Arguments Details Value Author(s)
Description
Calculates densities for fixed and distinct categories defined by habitat suitability index (HSI) breakpoints or thresholds. Used in the Woodpecker HSI package to calculate observed nest densities in suitability classes for plotting and mapping. The function could also be used to calculate density of any point observation within a study area, wherein values for a particular environmental variable or gradient are assessed at each observation and for each of a regularly spaced set of background pixels.
Usage
1 | calcClassDensities(sampleHSI, bgroundHSI, thresholds, area)
|
Arguments
sampleHSI |
Numeric vector of HSI values for observations (e.g., nest sites) |
bgroundHSI |
Numeric vector of HSI values for random background sample representing available sites |
thresholds |
Numeric vector of HSI breakpoints defining suitability classes |
area |
Numeric scalar representing the area surveyed |
Details
Calculates the density of observations within suitability classes defined by breakpoints in 'thresholds'. Output is a table with each row corresponding with a suitability class and number of rows equal to the number of classes.
Value
Data frame with one row for each suitability class. Information provided are class parameters ("HSI.md" = median HSI, "HSI.st" = lower bound, "HSI.end" = upper bound) and the density of observations within each bin ("Density").
Author(s)
Quresh S. Latif, Rocky Mountain Research Station, U.S. Forest Service
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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