R/division.r
In mdsumner/cconvention: CCAMLR Convention
Defines functions
.getASD
division
Documented in
division
# ---- division-b ----
## ASD database
## here we simply define a matrix for every named ASD that we might want
.getASD <- function(asd) {
if (length(asd) > 1) stop("only one named ASD can be returned")
x <- NULL
if (asd == "58.4.1") {
# Division 58.4.1
# The waters bounded by a line starting at 64°S 80°E; thence due east to 64°S 86°E; thence due north to 55°S 86°E; thence due east to 150°E longitude; thence due south to the Antarctic Continent; thence westward along the coast of the Antarctic Continent to 80°E longitude; thence due north to the starting point.
v <-
c(80, -90,
80, -64,
86, -64,
86, -55,
150, -55,
150, -90)
}
if (asd == "58.4.2") {
# Division 58.4.2
# The waters bounded by a line starting at 62°S 30°E; thence due east to 62°S 73°10'E; thence due south to 64°S 73°10'E; thence due east to 64°S 80°E; thence due south to the Antarctic Continent; thence westward along the coast of the Antarctic Continent to 30°E longitude; thence due north to the starting point.
#The waters bounded by a line starting at 62°S 30°E
# thence due east to 62°S 73°10'E
# thence due south to 64°S 73°10'E
# thence due east to 64°S 80°E
# thence due south to the Antarctic Continent
# thence westward along the coast of the Antarctic Continent to 30°E longitude
# thence due north to the starting point.
v <-
c(30, -90,
30, -62,
73 + 10/60, -62,
73 + 10/60, -64,
80, -64,
80, -90)
}
## 48 copied from http://www.fao.org/fishery/area/Area48/en 2020-02-19 MSumner
if (asd == "48.1") {
#Peninsular (Subarea 48.1)
# The waters bounded by a line commencing from a point at 70°00'W longitude on the coast of Antarctica at Palmer Land;
# thence running across the George VI Sound to a point at 70°00'W longitude on the south coast of Alexander Island;
# thence along the east coast of this island to a point on the northeast coast at 70°00'W longitude;
# thence due north to 60°00'S latitude;
# thence due east to 50°00'W longitude;
# thence due south to 65°00'S latitude;
# thence due west to a point on the east coast of the Antarctic Peninsula at 65°00'S latitude;
# thence running in a northeasterly and then southwesterly direction along the coast of the Antarctic Peninsula to the point of departure.
v <- c(-70, -90,
-70, -60, # ignore alexander island
-50, -60,
-50, -65,
-62, -65, ## dummy points for peninsula
-66, -67, ## dummy points for peninsula
-67, -74, ## dummy points for peninsula
-96, -78, ## dummy points for peninsula
-66, -90
)
}
if (asd == "48.2") {
# South Orkney (Subarea 48.2)
# The waters bounded by a line running from a point at 64°00'S latitude and 50°00'W longitude;
# thence due north to a point at 57°00'S latitude and 50°00'W longitude;
# thence due east to 30°00'W longitude;
# thence due south to 64°00'S latitude; thence due west to the point of departure.
v <- c(-50, -64,
-50, -57,
-30, -57,
-30, -64)
}
if (asd == "48.3") {
# South Georgia (Subarea 48.3)
# The waters bounded by a line running from a point at 57°00'S latitude and 50°00'W longitude;
# thence due north along meridian 50°00'W to parallel 50°00'S;
# thence due east to 30°00'W longitude;
# thence due south to 57°00'S latitude;
# thence due west to the point of departure.
v <-
c(-50, -57,
-50, -50,
-30, -50,
-30, -57)
}
if (asd == "48.4") {
# South Sandwich (Subarea 48.4)
# The waters bounded by a line running from a point at 64°00'S latitude and 30°00'W longitude;
# thence due north along meridian 30°00'W to parallel 50°00'S;
# thence due east to 20°00'W longitude;
# thence due south to 64°00'S latitude;
# thence due west to the point of departure.
v <- c(
-30, -64,
-30, -50,
-20, -50,
-20, -64
)
}
if (asd == "48.5") {
# Weddel Sea (Subarea 48.5)
# The waters bounded by a line running from a point at 65°00'S latitude on the east coast of the Antarctic Peninsula;
# thence due east to 50°00'W longitude;
# thence due north to 64°00'S latitude;
# thence running due east along this parallel to 20°00'W longitude;
# thence due south to the coast of Antarctica near Coats Land;
# thence running in a southwesterly and then northerly direction along the coast of Antarctica and the Antarctic Peninsula to the point of departure.
v <- c(
-66, -67, ## dummy points for peninsula
-62, -65, ## dummy points for peninsula
-50, -65,
-50, -64,
-20, -64,
-20, -90,
-96, -78, ## dummy points for peninsula
-67, -74 ## dummy points for peninsula
)
}
if (asd == "48.6") {
# Bouvet (Subarea 48.6)
# The waters bounded by a line running from a point at 20°00'W longitude on the coast of Antarctica near Coats Land;
# thence running due north along meridian 20°00'W to 50°00'S latitude;
# thence due east to 30°00'E longitude;
# thence due south to Princess Ragnhild coast in Antarctica;
# thence in a westerly direction along the coast of Antarctica to the point of departure.
v <- c(
-20, -90,
-20, -50,
-30, -50,
-30, -90
)
}
# if (asd == "88.1") {
# ##The waters bounded by a line commencing from a point on the coast of Antarctica between Oates Land and George V Land at 150°00'E longitude; thence due north to 60°00'S latitude; thence due east to 170°00'W longitude; thence due south to Dufek coast in Antarctica; thence running in a westerly direction along the coast of Antarctica to the point of departure.
# v <-
# c(150, -60,
# 180, -60)
# }
if (is.null(v)) stop(sprintf("%s not found", asd))
x <- matrix(v, ncol = 2, byrow = TRUE)
x
}
#' Define polygon object of CCAMLR divisions.
#'
#' Currently only builds objects for 58.4.1, ensuring they are topologically clean and with sufficient density for fishing impact analysis.
#' @param name for future use, currently ignored
#' @param intsct optional poylgon object to use for cropping via intersection
#'
#' @return SpatialPolygonsDataFrame
#' @export
#' @examples \dontrun{
#' #cm <- readOGR(file.path(dp, "data", "add_ver6"), "cst01_polygon")
#' #cmu <- gUnionCascaded(cm)
#' library(aceecostats)
#' subarea <- division(intsct = aes_region)
#' }
#' @importFrom sp CRS Polygon Polygons SpatialPolygons SpatialPolygonsDataFrame spTransform
#' @importFrom raster cover projection
division <- function(name = "58.4.1", intsct = NULL) {
llproj <- "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0"
listofasd <- vector("list", length(name))
for (i in seq_along(name)) {
listofasd[[i]] <- .getASD(name[i])
}
clp <- function(x) rbind(x, x[1,])
listofasd1 <- lapply(listofasd, function(x) list(Polygon(densifyMat(clp(x)))))
dv <- SpatialPolygonsDataFrame(SpatialPolygons(lapply(seq_along(listofasd1), function(xi) Polygons(listofasd1[[xi]], as.character(xi))),
proj4string = CRS(llproj)), data.frame(name = name, stringsAsFactors = FALSE))
##cm <- raadtools::subset(coastmap("cst01_polygon"), cst01srf == "land")
if (!is.null(intsct)) {
cv <- spTransform(subset(cover(spTransform(dv, projection(intsct)), intsct), !is.na(name)), llproj)
} else {
cv <- dv
}
cv
}
mdsumner/cconvention documentation built on Feb. 24, 2020, 10:50 a.m.
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Defines functions .getASD division
Documented in division
# ---- division-b ----
## ASD database
## here we simply define a matrix for every named ASD that we might want
.getASD <- function(asd) {
if (length(asd) > 1) stop("only one named ASD can be returned")
x <- NULL
if (asd == "58.4.1") {
# Division 58.4.1
# The waters bounded by a line starting at 64°S 80°E; thence due east to 64°S 86°E; thence due north to 55°S 86°E; thence due east to 150°E longitude; thence due south to the Antarctic Continent; thence westward along the coast of the Antarctic Continent to 80°E longitude; thence due north to the starting point.
v <-
c(80, -90,
80, -64,
86, -64,
86, -55,
150, -55,
150, -90)
}
if (asd == "58.4.2") {
# Division 58.4.2
# The waters bounded by a line starting at 62°S 30°E; thence due east to 62°S 73°10'E; thence due south to 64°S 73°10'E; thence due east to 64°S 80°E; thence due south to the Antarctic Continent; thence westward along the coast of the Antarctic Continent to 30°E longitude; thence due north to the starting point.
#The waters bounded by a line starting at 62°S 30°E
# thence due east to 62°S 73°10'E
# thence due south to 64°S 73°10'E
# thence due east to 64°S 80°E
# thence due south to the Antarctic Continent
# thence westward along the coast of the Antarctic Continent to 30°E longitude
# thence due north to the starting point.
v <-
c(30, -90,
30, -62,
73 + 10/60, -62,
73 + 10/60, -64,
80, -64,
80, -90)
}
## 48 copied from http://www.fao.org/fishery/area/Area48/en 2020-02-19 MSumner
if (asd == "48.1") {
#Peninsular (Subarea 48.1)
# The waters bounded by a line commencing from a point at 70°00'W longitude on the coast of Antarctica at Palmer Land;
# thence running across the George VI Sound to a point at 70°00'W longitude on the south coast of Alexander Island;
# thence along the east coast of this island to a point on the northeast coast at 70°00'W longitude;
# thence due north to 60°00'S latitude;
# thence due east to 50°00'W longitude;
# thence due south to 65°00'S latitude;
# thence due west to a point on the east coast of the Antarctic Peninsula at 65°00'S latitude;
# thence running in a northeasterly and then southwesterly direction along the coast of the Antarctic Peninsula to the point of departure.
v <- c(-70, -90,
-70, -60, # ignore alexander island
-50, -60,
-50, -65,
-62, -65, ## dummy points for peninsula
-66, -67, ## dummy points for peninsula
-67, -74, ## dummy points for peninsula
-96, -78, ## dummy points for peninsula
-66, -90
)
}
if (asd == "48.2") {
# South Orkney (Subarea 48.2)
# The waters bounded by a line running from a point at 64°00'S latitude and 50°00'W longitude;
# thence due north to a point at 57°00'S latitude and 50°00'W longitude;
# thence due east to 30°00'W longitude;
# thence due south to 64°00'S latitude; thence due west to the point of departure.
v <- c(-50, -64,
-50, -57,
-30, -57,
-30, -64)
}
if (asd == "48.3") {
# South Georgia (Subarea 48.3)
# The waters bounded by a line running from a point at 57°00'S latitude and 50°00'W longitude;
# thence due north along meridian 50°00'W to parallel 50°00'S;
# thence due east to 30°00'W longitude;
# thence due south to 57°00'S latitude;
# thence due west to the point of departure.
v <-
c(-50, -57,
-50, -50,
-30, -50,
-30, -57)
}
if (asd == "48.4") {
# South Sandwich (Subarea 48.4)
# The waters bounded by a line running from a point at 64°00'S latitude and 30°00'W longitude;
# thence due north along meridian 30°00'W to parallel 50°00'S;
# thence due east to 20°00'W longitude;
# thence due south to 64°00'S latitude;
# thence due west to the point of departure.
v <- c(
-30, -64,
-30, -50,
-20, -50,
-20, -64
)
}
if (asd == "48.5") {
# Weddel Sea (Subarea 48.5)
# The waters bounded by a line running from a point at 65°00'S latitude on the east coast of the Antarctic Peninsula;
# thence due east to 50°00'W longitude;
# thence due north to 64°00'S latitude;
# thence running due east along this parallel to 20°00'W longitude;
# thence due south to the coast of Antarctica near Coats Land;
# thence running in a southwesterly and then northerly direction along the coast of Antarctica and the Antarctic Peninsula to the point of departure.
v <- c(
-66, -67, ## dummy points for peninsula
-62, -65, ## dummy points for peninsula
-50, -65,
-50, -64,
-20, -64,
-20, -90,
-96, -78, ## dummy points for peninsula
-67, -74 ## dummy points for peninsula
)
}
if (asd == "48.6") {
# Bouvet (Subarea 48.6)
# The waters bounded by a line running from a point at 20°00'W longitude on the coast of Antarctica near Coats Land;
# thence running due north along meridian 20°00'W to 50°00'S latitude;
# thence due east to 30°00'E longitude;
# thence due south to Princess Ragnhild coast in Antarctica;
# thence in a westerly direction along the coast of Antarctica to the point of departure.
v <- c(
-20, -90,
-20, -50,
-30, -50,
-30, -90
)
}
# if (asd == "88.1") {
# ##The waters bounded by a line commencing from a point on the coast of Antarctica between Oates Land and George V Land at 150°00'E longitude; thence due north to 60°00'S latitude; thence due east to 170°00'W longitude; thence due south to Dufek coast in Antarctica; thence running in a westerly direction along the coast of Antarctica to the point of departure.
# v <-
# c(150, -60,
# 180, -60)
# }
if (is.null(v)) stop(sprintf("%s not found", asd))
x <- matrix(v, ncol = 2, byrow = TRUE)
x
}
#' Define polygon object of CCAMLR divisions.
#'
#' Currently only builds objects for 58.4.1, ensuring they are topologically clean and with sufficient density for fishing impact analysis.
#' @param name for future use, currently ignored
#' @param intsct optional poylgon object to use for cropping via intersection
#'
#' @return SpatialPolygonsDataFrame
#' @export
#' @examples \dontrun{
#' #cm <- readOGR(file.path(dp, "data", "add_ver6"), "cst01_polygon")
#' #cmu <- gUnionCascaded(cm)
#' library(aceecostats)
#' subarea <- division(intsct = aes_region)
#' }
#' @importFrom sp CRS Polygon Polygons SpatialPolygons SpatialPolygonsDataFrame spTransform
#' @importFrom raster cover projection
division <- function(name = "58.4.1", intsct = NULL) {
llproj <- "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0"
listofasd <- vector("list", length(name))
for (i in seq_along(name)) {
listofasd[[i]] <- .getASD(name[i])
}
clp <- function(x) rbind(x, x[1,])
listofasd1 <- lapply(listofasd, function(x) list(Polygon(densifyMat(clp(x)))))
dv <- SpatialPolygonsDataFrame(SpatialPolygons(lapply(seq_along(listofasd1), function(xi) Polygons(listofasd1[[xi]], as.character(xi))),
proj4string = CRS(llproj)), data.frame(name = name, stringsAsFactors = FALSE))
##cm <- raadtools::subset(coastmap("cst01_polygon"), cst01srf == "land")
if (!is.null(intsct)) {
cv <- spTransform(subset(cover(spTransform(dv, projection(intsct)), intsct), !is.na(name)), llproj)
} else {
cv <- dv
}
cv
}
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