Select horizontal regions — cdo

Selects all grid cells with the center point inside user defined regions or a circle. The resulting grid is unstructured.

Usage

cdo_selcircle(
  ifile,
  regions = NULL,
  lon = NULL,
  lat = NULL,
  radius = NULL,
  ofile = NULL
)

cdo_selregion(
  ifile,
  regions = NULL,
  lon = NULL,
  lat = NULL,
  radius = NULL,
  ofile = NULL
)

Arguments

ifile: String with the path to the input file.
regions: STRING - Comma-separated list of ASCII formatted files with different regions
lon: FLOAT - Longitude of the center of the circle in degrees, default lon=0.0
lat: FLOAT - Latitude of the center of the circle in degrees, default lat=0.0
radius: STRING - Radius of the circle, default radius=1deg (units: deg, rad, km, m)
ofile: String with the path to the output file.

Details

selregion  Select cells inside regions
           Selects all grid cells with the center point inside the regions.
           Regions can be defined by the user via an ASCII file.
           Each region consists of the geographic coordinates of a convex polygon.
           Each line of a polygon description file contains the longitude and latitude of one point.
           Each polygon description file can contain one or more polygons separated by a line with the character \\&amp;.

           Predefined regions of countries can be specified via the country codes.
           A country is specified with dcw:&lt;CountryCode&gt;. Country codes can be combined with the plus sign.
selcircle  Select cells inside a circle
           Selects all grid cells with the center point inside a circle. The circle is described by geographic coordinates
           of the center and the radius of the circle.