sp: Classes and Methods for Spatial Data

空間データのクラスおよびメソッド

> library(sp)

バージョン: 1.2.3

関数名 概略
CRS-class Class "CRS" of coordinate reference system arguments
DMS-class Class "DMS" for degree, minute, decimal second values
GridTopology-class Class "GridTopology" Line create objects of class Line or Lines
Line-class Class "Line"
Lines-class Class "Lines"
Polygon-class Class "Polygon"
Polygons-class Class "Polygons"
Rlogo Rlogo jpeg image
Spatial-class Class "Spatial"
SpatialGrid-class Class "SpatialGrid"
SpatialGridDataFrame-class Class "SpatialGridDataFrame"
SpatialLines create objects of class SpatialLines or SpatialLinesDataFrame
SpatialLines-class a class for spatial lines
SpatialLinesDataFrame-class a class for spatial lines with attributes
SpatialPixels define spatial grid
SpatialPixels-class Class "SpatialPixels"
SpatialPixelsDataFrame define spatial grid with attribute data
SpatialPixelsDataFrame-class Class "SpatialPixelsDataFrame"
SpatialPoints create objects of class SpatialPoints or SpatialPointsDataFrame
SpatialPoints-class Class "SpatialPoints"
SpatialPointsDataFrame-class Class "SpatialPointsDataFrame"
SpatialPolygons create objects of class SpatialPolygons or SpatialPolygonsDataFrame
SpatialPolygons-class Class "SpatialPolygons"
SpatialPolygonsDataFrame-class Class "SpatialPolygonsDataFrame"
addAttrToGeom-methods constructs SpatialXxxDataFrame from geometry and attributes
aggregate aggregation of spatial objects
as.SpatialPolygons.GridTopology Make SpatialPolygons object from GridTopology object
as.SpatialPolygons.PolygonsList Making SpatialPolygons objects bbox,Spatial-method retrieve bbox from spatial data
bpy.colors blue-pink-yellow color scheme, which also prints well on black/white printers
bubble Create a bubble plot of spatial data
char2dms Convert character vector to DMS-class object
compassRose Display a compass rose.
coordinates set spatial coordinates to create a Spatial object, or retrieve spatial coordinates from a Spatial object
coordinates-methods retrieve (or set) spatial coordinates
coordnames-methods retrieve or assign coordinate names for classes in sp
degAxis axis with degrees
dimensions,Spatial-method retrieve spatial dimensions from spatial data
disaggregate-methods disaggregate SpatialLines, SpatialLinesDataFrame, SpatialPolygons, or SpatialPolygonsDataFrame objects
flipHorizontal rearrange data in SpatialPointsDataFrame or SpatialGridDataFrame for plotting with spplot (levelplot/xyplot wrapper)
geometry-methods Methods for retrieving the geometry from a composite (geometry + attributes) object
gridIndex2nb create neighbourhood (nb) object from grid geometry
gridded-methods specify spatial data as being gridded, or find out whether they are
gridlines Create N-S and E-W grid lines over a geographic region
image.SpatialGridDataFrame image gridded spatial data, or convert to format for image
is.projected Sets or retrieves projection attributes on classes extending SpatialData
loadMeuse deprecated function to load the Meuse data set
mapasp Calculate aspect ratio for plotting geographic
maps; create nice degree axis labels
merge Merge a Spatial* object having attributes with a data.frame
meuse Meuse river data set
meuse.grid Prediction Grid for Meuse Data Set
meuse.grid_ll Prediction Grid for Meuse Data Set, geographical coordinates
meuse.riv River Meuse outline
nowrapSpatialLines Split SpatialLines components at offset
over-methods consistent spatial overlay for points, grids and polygons
overlay Deprecated functions in sp
panel.spplot panel and panel utility functions for spplot
point.in.polygon do point(s) fall in a given polygon?
polygons sets spatial coordinates to create spatial data, or retrieves spatial coordinates
polygons-methods Retrieve polygons from SpatialPolygonsDataFrame object
read.asciigrid read/write to/from (ESRI) asciigrid format
recenter-methods Methods for Function recenter in Package 'sp'
select.spatial select points spatially
sp A package providing classes and methods for
spatial data: points, lines, polygons and grids
spChFIDs-methods change feature IDs in spatial objects
spDistsN1 Euclidean or Great Circle distance between points
spTransform spTransform for map projection and datum transformation
spmap.to.lev rearrange data in SpatialPointsDataFrame or SpatialGridDataFrame for plotting with spplot (levelplot/xyplot wrapper)
spplot Plot methods for spatial data with attributes
spsample sample point locations in (or on) a spatial object
surfaceArea Compute surface area of a digital elevation model.
zerodist find point pairs with equal spatial coordinates

SpatialPolygons

ポリゴンクラスオブジェクトの作成

char2dms / dd2dms

Arguments

  • from
  • chd
  • chm
  • chs
  • dd
  • NS
> data("state")
> state.center$y %>% {
+   print(str(.))
+   (stateN <<- dd2dms(., NS = TRUE))
+ }

 num [1:50] 32.6 49.2 34.2 34.7 36.5 ...
NULL

 [1] 32d35'24.36"N 49d15'N       34d13'9.12"N  34d44'0.96"N  36d32'2.76"N 
 [6] 38d40'39.72"N 41d35'34.08"N 38d40'39.72"N 27d52'27.84"N 32d19'58.44"N
[11] 31d45'N       43d33'53.28"N 40d2'58.2"N   40d2'58.2"N   41d56'8.88"N 
[16] 38d25'13.44"N 37d23'29.4"N  30d37'5.16"N  45d37'21.36"N 39d16'40.08"N
[21] 42d21'52.2"N  43d8'9.96"N   46d23'39.48"N 32d40'32.88"N 38d20'4.92"N 
[26] 46d49'22.8"N  41d20'8.16"N  39d6'22.68"N  43d23'36.24"N 39d57'49.32"N
[31] 34d28'35.04"N 43d8'9.96"N   35d25'10.2"N  47d15'6.12"N  40d13'15.6"N 
[36] 35d30'19.08"N 43d54'28.08"N 40d54'24.84"N 41d35'34.08"N 33d37'8.4"N  
[41] 44d20'11.4"N  35d40'36.12"N 31d23'22.92"N 39d6'22.68"N  44d15'2.88"N 
[46] 37d33'46.8"N  47d25'23.16"N 38d25'13.44"N 44d35'37.32"N 43d3'1.44"N

> stateN %>% {
+   print(str(.))
+   ch.stateN <<- as.character(.)
+ }

Formal class 'DMS' [package "sp"] with 5 slots
  ..@ WS : logi [1:50] FALSE FALSE FALSE FALSE FALSE FALSE ...
  ..@ deg: int [1:50] 32 49 34 34 36 38 41 38 27 32 ...
  ..@ min: int [1:50] 35 15 13 44 32 40 35 40 52 19 ...
  ..@ sec: num [1:50] 24.36 0 9.12 0.96 2.76 ...
  ..@ NS : logi TRUE
NULL

> str(ch.stateN)

 chr [1:50] "32d35'24.36\"N" "49d15'N" "34d13'9.12\"N" ...

> stateNa <- char2dms(ch.stateN)
> str(attributes(stateNa))

List of 6
 $ WS   : logi [1:50] FALSE FALSE FALSE FALSE FALSE FALSE ...
 $ deg  : int [1:50] 32 49 34 34 36 38 41 38 27 32 ...
 $ min  : int [1:50] 35 15 13 44 32 40 35 40 52 19 ...
 $ sec  : num [1:50] 24.36 0 9.12 0.96 2.76 ...
 $ NS   : logi TRUE
 $ class: atomic [1:1] DMS
  ..- attr(*, "package")= chr "sp"

> ch.stateN <- as(stateN, "character")
> str(ch.stateN)

 chr [1:50] "32d35'24.36\"N" "49d15'N" "34d13'9.12\"N" ...

> stateNa <- char2dms(ch.stateN)
> str(attributes(stateNa))

List of 6
 $ WS   : logi [1:50] FALSE FALSE FALSE FALSE FALSE FALSE ...
 $ deg  : int [1:50] 32 49 34 34 36 38 41 38 27 32 ...
 $ min  : int [1:50] 35 15 13 44 32 40 35 40 52 19 ...
 $ sec  : num [1:50] 24.36 0 9.12 0.96 2.76 ...
 $ NS   : logi TRUE
 $ class: atomic [1:1] DMS
  ..- attr(*, "package")= chr "sp"

> char2dms(from = "24d28'06.0\"N") %>% as.numeric()

[1] 24.46833

> char2dms(from = "123d0'17.0\"E") %>% as.numeric()

[1] 123.0047

spsample