nepacLL {PBSmapping} | R Documentation |
Data: Shorelines of the NE Pacific Ocean and of the World
Description
PolySet of polygons for the shorelines of the northeast Pacific Ocean and of the world, both in normal and high resolution.
Usage
data(nepacLL)
data(nepacLLhigh)
data(worldLL)
data(worldLLhigh)
Format
Data frame consisting of 4 columns: PID
= primary polygon ID,
POS
= position of each vertex within a given polygon, X
= longitude coordinate, and Y
= latitude coordinate. Attributes:
projection = "LL"
.
Note
In R, the data must be loaded using the data
function.
Author(s)
Nicholas M. Boers, Staff Software Engineer
Jobber, Edmonton AB
Last modified Rd: 2023-10-30
Source
Polygon data from the GSHHG (Global Self-consistent, Hierarchical,
High-resolution Geography) Database.
Download the native binary files of shoreline polygons, rivers, and borders
contained in the latest zip archive (version 2.3.4 ) at
http://www.soest.hawaii.edu/pwessel/gshhg/.
nepacLL <- importGSHHS("gshhs_h.b", xlim=c(-190,-110), ylim=c(34,72), level=1, n=15, xoff=-360) nepacLLhigh <- importGSHHS("gshhs_f.b", xlim=c(-190,-110), ylim=c(34,72), level=1, n=0, xoff=-360) nepacLLhigh <- thinPolys(nepacLLhigh, tol=0.1, filter=3) worldLL <- importGSHHS("gshhs_l.b", xlim=c(-20,360), ylim=c(-90,90), level=1, n=15, xoff=0) worldLL <- PBSmapping:::.fixGSHHSWorld(worldLL) worldLLhigh <- importGSHHS("gshhs_i.b", xlim=c(-20,360), ylim=c(-90,90), level=1, n=15, xoff=0) worldLLhigh <- PBSmapping:::.fixGSHHSWorld(worldLLhigh)
References
Wessel, P. and Smith, W.H.F. (1996) A global, self-consistent,
hierarchical, high-resolution shoreline database. Journal of
Geophysical Research 101, 8741–8743.
http://www.soest.hawaii.edu/pwessel/gshhg/Wessel+Smith_1996_JGR.pdf
See Also
Data:
bcBathymetry
,
surveyData
,
towData
Functions:
importGSHHS
,
plotMap
,
plotPolys
,
addPolys
,
clipPolys
,
refocusWorld
,
thickenPolys
,
thinPolys