# fill data gaps:
fill_raster_holes <- function(ras, width = 9) {
fill.na <- function(x) {
center = 0.5 + (width*width/2)
if( is.na(x)[center] ) {
return( round(mean(x, na.rm=TRUE),0) )
} else {
return( round(x[center],0) )
}
}
while (length(ras[is.na(ras)]) != 0) {
ras <- raster::focal(ras, w = matrix(1,width,width), fun = fill.na,
pad = TRUE, na.rm = FALSE, NAonly=T)
# message(length(ras[is.na(ras)]))
}
return(ras)
}
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