Description Usage Arguments Examples
View source: R/extend_raster.R
extend_raster will extend a Raster* object by identifying each point which is NA based on a set of provided co-ordinates. It will then find the nearest non-NA cell and extend the raster so that no observation records sit on NA pixels. This function is best employed on islands where species' observation records may not overlap with an underlying climate layer (e.g. due to resolution differences).
1 2 | extend_raster(xy, raster, only.na = TRUE, output.table = FALSE,
fact = 1)
|
xy |
xy coordinates specifying cell centroids. Ensure that column headings are lower case and labelled as longitude/latitude or lat/long or xy. |
raster |
Raster which will be extended |
only.na |
Logical. If TRUE, the function will only calculate new values for NA cells. When TRUE, processing time is greatly reduced. |
output.table |
Logical. If output.table=TRUE then a data.frame will be displayed instead of a raster. If output.table=FALSE then an extended raster will be displayed. Default is output.table=FALSE |
fact |
Integer. This argument disaggregates raster* (i.e. increases the reshighres.split<-split.raster(raster=global_climate[[1]], ppside = 10, save = TRUE, plot=FALSE, raster.name="highres_split_") |
1 | Coming soon.
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