| Title: | CCAMLR Convention |
|---|---|
| Description: | Provides topologically sound spatial structures for the CCAMLR convention. The Convention on the Conservation of Antarctic Marine Living Resources describes a system of spatial regions in precise terms. This package provides means of capturing that information and providing spatial map structures with it. |
| Authors: | Michael D. Sumner [aut, cre], Simon Wotherspoon [aut] |
| Maintainer: | Michael D. Sumner <[email protected]> |
| License: | GPL-3 |
| Version: | 0.0.0.9000 |
| Built: | 2026-11-05 04:52:47 UTC |
| Source: | https://github.com/AustralianAntarcticDivision/cconvention |
This function takes a matrix of coordinates in longlat that define a pathy, and returns a denser matrix with more vertices based on a minimum allowed distance.
densifyMat(x, minm = 1852 * 10)densifyMat(x, minm = 1852 * 10)
x |
matrix of coordinates, long/lat |
minm |
default distance in metres on a great cicle |
The function assumes each segment is a great circle, on the Vincenty ellipsoid distVincentyEllipsoid.
matrix
Currently only builds objects for 58.4.1, ensuring they are topologically clean and with sufficient density for fishing impact analysis.
division(name = "58.4.1", intsct = NULL)division(name = "58.4.1", intsct = NULL)
name |
for future use, currently ignored |
intsct |
optional poylgon object to use for cropping via intersection |
SpatialPolygonsDataFrame
## Not run: #cm <- readOGR(file.path(dp, "data", "add_ver6"), "cst01_polygon") #cmu <- gUnionCascaded(cm) library(aceecostats) subarea <- division(intsct = aes_region) ## End(Not run)## Not run: #cm <- readOGR(file.path(dp, "data", "add_ver6"), "cst01_polygon") #cmu <- gUnionCascaded(cm) library(aceecostats) subarea <- division(intsct = aes_region) ## End(Not run)