mosaicGTiffs.R

##############################################################################
# title         : mosaicGTiffs.R
# purpose       : Takes in projected GeoTIFF outputs from projHDF2GTiff or  
#               : other GeoTIFFS and mosaics them into on larger file
# author        : Abdulhakim Abdi (@HakimAbdi)
# input         : Individual GeoTIFF files
# output        : A mosaicked GeoTIFF file with a larger extent
##############################################################################

mosaicGTiffs = function(proj.loc, gtiffs, mosaicName, overwrite){ 
  if("gdalUtils" %in% rownames(installed.packages()) == FALSE){ # checks if gdalutils is installed 
    install.packages("gdalUtils", repos="http://r-forge.r-project.org")
    require(gdalUtils)
  }
  suppressWarnings(dir.create(paste(proj.loc,"Mosaicked",sep="/"))) # creates a directory to store mosaicked file
  gdalwarp(gtiffs, paste(proj.loc,"/","Mosaicked","/",mosaicName,".tif",sep=""),overwrite = overwrite)
}