Hej hej, is there a way to extend the SpatialPointsDataFrame data slot?This is the structure of an object of it:> str(coord) Formal class 'SpatialPointsDataFrame' [package "sp"] with 5 slots ..@ data :'data.frame': 214 obs. of 2 variables: .. ..$ location.long: num [1:214] -79.8 -79.8 -79.8 -79.8 -79.8 ... .. ..$ location.lat : num [1:214] 9.16 9.16 9.16 9.16 9.16 ... ..@ coords.nrs : num(0) ..@ coords : num [1:214, 1:2] -79.8 -79.8 -79.8 -79.8 -79.8 ... .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : NULL .. .. ..$ : chr [1:2] "location.long" "location.lat" ..@ bbox : num [1:2, 1:2] -79.84 9.16 -79.84 9.17 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "location.long" "location.lat" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots .. .. ..@ projargs: chr NA
data is a data.frame including the information of long and lat location. I would like to have there a third information: time (but as POSIXct). Is there an elegant way to do this? Best, marco [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.