trim

0th

Percentile

Trim

Trim (shrink) a Raster* object by removing outer rows and columns that all have the same value (e.g. NA).

Or remove the whitespace before or after a string of characters (or a matrix, or the character values in a data.frame).

Keywords
spatial
Usage
# S4 method for Raster
trim(x, padding=0, values=NA, filename='', ...)
# S4 method for character
trim(x, ...)
Arguments
x

Raster* object or a character string

values

numeric. Value(s) based on which a Raster* should be trimmed

padding

integer. Number of outer rows/columns to keep

filename

character. Optional output filename

...

If x is a Raster* object: additional arguments as for writeRaster

Value

A RasterLayer or RasterBrick object (if x is a Raster* object) or a character string (if x is a character string).

Aliases
  • trim
  • trim,Raster-method
  • trim,character-method
  • trim,matrix-method
  • trim,data.frame-method
Examples
# NOT RUN {
r <- raster(ncol=18,nrow=18)
r[39:49] <- 1
r[113:155] <- 2
r[200] <- 6
s <- trim(r) 


trim("    hi folks    !   ")
# }
Documentation reproduced from package raster, version 2.5-8, License: GPL (>= 3)

Community examples

Looks like there are no examples yet.