compareCRS function

Partially compare two CRS objects

Compare CRS objects

compareCRS(x, y, unknown=FALSE, verbatim=FALSE, verbose=FALSE)

Arguments

• x: CRS object, or object from which it can be extracted with projection, or PROJ.4 format character string
• y: same as x
• unknown: logical. Return TRUE if x or y is TRUE
• verbatim: logical. If TRUE compare x and y, verbatim (not partially)
• verbose: logical. If TRUE, messages about the comparison may be printed

Returns

logical

See Also

sp::identicalCRS, crs

Examples

compareCRS("+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100 +ellps=WGS84",
  "+proj=longlat +datum=WGS84")
compareCRS("+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0",
  "+proj=longlat +datum=WGS84")
compareCRS("+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0", 
  "+proj=longlat +datum=WGS84", verbatim=TRUE)
compareCRS("+proj=longlat +datum=WGS84", NA)
compareCRS("+proj=longlat +datum=WGS84", NA, unknown=TRUE)