lets.presab
(Package: letsR) :
Create a presence-absence matrix of species' geographic ranges within a grid
Convert species' ranges (in shapefile format) into a presence-absence matrix based on a user-defined grid system
● Data Source:
CranContrib
● Keywords:
● Alias: lets.presab
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lets.maplizer
(Package: letsR) :
Create a matrix summarizing species' attributes within
Summarize species atributes per cell in a presence-absence matrix.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.maplizer
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lets.distmat
(Package: letsR) :
Compute a geographic distance matrix
Calculates a geographic distance matrix based on a PresenceAbsence or a two column matrix of x(longitude) and y(latitude).
● Data Source:
CranContrib
● Keywords:
● Alias: lets.distmat
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lets.rangesize
(Package: letsR) :
Compute species' geographic range sizes
This function calculates species' range sizes from a PresenceAbsence object or directly from the species' shapefiles.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.rangesize
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lets.iucncont
(Package: letsR) :
Transform IUCN RedList conservation status to continuous values
Transform IUCN RedList conservation status to continuous values ranging from 0 to 5.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.iucncont
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lets.shFilter
(Package: letsR) :
Filter species' shapefiles based on its presence, origin, and season
Filter species shapefiles by origin, presence, and seasonal type (following IUCN types: http://www.iucnredlist.org/technical-documents/spatial-data, see metadata).
● Data Source:
CranContrib
● Keywords:
● Alias: lets.shFilter
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lets.classvar
(Package: letsR) :
Frequency distribution of a variable within a species' range
Based on a species Presence-Absence matrix including variables of interest (see lets.addvar ), the function divides a continuous variable into classes and counts the frequency of each class within each species' range.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.classvar
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plot.PresenceAbsence
(Package: letsR) :
Plot an object of class PresenceAbsence
Plots species richness map from an object of class PresenceAbsence or a particular species' map.
● Data Source:
CranContrib
● Keywords:
● Alias: plot.PresenceAbsence
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lets.midpoint
(Package: letsR) :
Compute the midpoint of species' geographic ranges
Calculate species' distributional midpoint from a presence-absence matrix.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.midpoint
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lets.subsetPAM
(Package: letsR) :
Subset a PresenceAbsence object based on species names
Subset a PresenceAbsence object based on species character vector provided by the user.
● Data Source:
CranContrib
● Keywords:
● Alias: lets.subsetPAM
●
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