gdistance v1.3-6
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Distances and Routes on Geographical Grids
Provides classes and functions to calculate various distance measures and routes in heterogeneous geographic spaces represented as grids. The package implements measures to model dispersal histories first presented by van Etten and Hijmans (2010) <doi:10.1371/journal.pone.0012060>. Least-cost distances as well as more complex distances based on (constrained) random walks can be calculated. The distances implemented in the package are used in geographical genetics, accessibility indicators, and may also have applications in other fields of geospatial analysis.
Functions in gdistance
| Name | Description | |
| Transition-classes | Transition classes | |
| adjacencyFromTransition | Adjacent cells | |
| Summary-methods | Summary methods | |
| accCost | Accumulated Cost Surface | |
| gdistance | Distances and Routes on Geographical Grids | |
| ArithMath-methods | Arithmetic and mathematical operations with objects of Transition* classes | |
| Transition-extract-replace | Extracting and replacing: class Transition | |
| raster,TransitionLayer-method | RasterLayer from TransitionLayer object | |
| Coords class | Coords class | |
| Transition-slots | Extract or change elements of Transition* objects | |
| pathInc | Incidence of paths from a common origin: overlap and non-overlap | |
| commuteDistance | Commute-time distance Calculates the resistance distance between points. | |
| costDistance | Cost distance | |
| rSPDistance | Randomized shortest path distance | |
| overlap | Overlap and nonoverlap of trajectories | |
| genDist | Genetic distances and coordinates of haplogroup R1b1b2 populations in Europe | |
| passage | Probability of passage | |
| shortestPath | Shortest path | |
| geoCorrection | Geographic Correction | |
| normalize | Normalize | |
| sumReciprocal | Reciprocal of the sum of the reciprocals of conductance values in Transition* objects | |
| transition | Create an object of the class Transition | |
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Vignettes of gdistance
| Name | ||
| Overview.Rmd | ||
| gdistance1.bib | ||
| logo.png | ||
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Details
| Type | Package |
| URL | https://agrobioinfoservices.github.io/gdistance/ |
| BugReports | https://github.com/agrobioinfoservices/gdistance/issues |
| License | GPL (>= 2) |
| Encoding | UTF-8 |
| LazyData | true |
| RoxygenNote | 7.1.0 |
| VignetteBuilder | knitr |
| NeedsCompilation | no |
| Packaged | 2020-06-29 08:01:35 UTC; kauefeitosadiasdesousa |
| Repository | CRAN |
| Date/Publication | 2020-06-29 12:38:33 UTC |
| depends | igraph (>= 0.7.0) , Matrix , methods , R (>= 3.2.0) , raster (>= 1.9-19) |
| suggests | knitr , markdown , rmarkdown , testthat (>= 2.1.0) |
| imports | sp , stats |
| Contributors | Jacob van Etten |
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