If you want an actual spatial dataset, the best place to ask is R-sig-geo R has substantial capabilities for dealing with gridded spatial data, including in the sp, raster, and sf packages.
Here's one approach, creating a SpatialGridDataFrame, which can be exported in any standard raster format using the rgdal package. DF2 <- DF1 coordinates(DF2) <- ~longitude + latitude gridded(DF2) <- TRUE fullgrid(DF2) <- TRUE I recommend Roger Bivand's excellent book: https://www.springer.com/us/book/9781461476177 and there are abundant web tutorials. Sarah On Tue, Nov 13, 2018 at 2:22 AM lily li <chocol...@gmail.com> wrote: > > Hi R users, > > I have a question about manipulating data. For example, I have DF1 as the > following, how to transform it to a gridded dataset DF2? In DF2, each value > Precip is an attribute of the corresponding grid cell. So DF2 is like a > spatial surface, and can be imported to ArcGIS. Thanks for your help. > > DF1 > latitude longitude Precip > 45.5 110.5 3.2 > 45.5 111 5.0 > 45.5 111.5 1.8 > 45.5 112 2.0 > 46 110.5 6.1 > 46 111 4.5 > 46 111.5 7.8 > 46 112 5.5 > ... > > > DF2 > 6.1 4.5 7.8 5.5 > 3.2 5.0 1.8 2.0 > ... > -- Sarah Goslee (she/her) http://www.numberwright.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
