The data include identifying information about all grid cells: the grid id, xcoord and ycoord, the row and col(umn), and geometry. It helps use the convenience function to get information such as row and column numbers such that the user does not have to provide them. Further information can be found here: https://grid.prio.org/#/codebook
Usage
data(priogrid)Format
An object of class "data.frame"
- gid
grid cell identifier, a unique id code for each cell in the grid
- xcoord
longitude coordinate (decimal degrees) for the centroid of the grid cell. Negative coordinates are located west of the Prime Meridian (Greenwich) at 0 degrees longitude
- ycoord
latitude coordinate (decimal degrees) for the centroid of the grid cell. Negative coordinates are located south of the Equator at 0 degrees latitude
- col
column number for the grid cell. Column 1 is the westernmost column in the grid, between 180 and 179.5 decimal degrees W. With one column per half degree, there are 720 columns in PRIO-GRID.
- row
row number for the grid cell. Row 1 is the southernmost row (between 90 and 89.5 degrees S) and row 360 is the northernmost row in the full grid in the underlying data
- geometry
Polygon information about each individual cell
References
Tollefsen, Andreas Forø, Håvard Strand & Halvard Buhaug. 2012. PRIO-GRID: A unified spatial data structure. Journal of Peace Research, 49(2): 363-374. (Published paper)
Examples
data(priogrid)
head(priogrid)
#> Simple feature collection with 6 features and 5 fields
#> Geometry type: POLYGON
#> Dimension: XY
#> Bounding box: xmin: 163.5 ymin: 89.5 xmax: 166.5 ymax: 90
#> Geodetic CRS: WGS 84
#> gid xcoord ycoord col row geometry
#> 1 259168 163.75 89.75 688 360 POLYGON ((163.5 89.5, 163.5...
#> 2 259169 164.25 89.75 689 360 POLYGON ((164 89.5, 164 90,...
#> 3 259170 164.75 89.75 690 360 POLYGON ((164.5 89.5, 164.5...
#> 4 259171 165.25 89.75 691 360 POLYGON ((165 89.5, 165 90,...
#> 5 259172 165.75 89.75 692 360 POLYGON ((165.5 89.5, 165.5...
#> 6 259173 166.25 89.75 693 360 POLYGON ((166 89.5, 166 90,...