## S3 method for class 'lgcpPredict':
extract(obj, x, y, t, s=-1, inWindow,
crop2parentwindow=TRUE, ...)
?dump2dir
and ?setoutput
. extract.lgcpPredict
extracts chunks of data that have been dumped to disk. The subset of data can either be specified using an (x,y,t,s) box or (window,t,s) region
where window is a polygonal subregion of interest.