On Tue, Sep 4, 2018 at 12:18 AM, Dhiraj Khanna <dhirajkha...@gmail.com> wrote:
> @Kent Johnson <kent3...@gmail.com> yes, this is shipping data and you are > right, great circle routes are not the best visualization. The problem I am > facing is that I have oil trade happening over a period of time from various > ports that I need to visualize. Over the selected period of time, there are > hundreds of voyages being undertaken by ships. Plotting them all as gc routes > looks ugly. My approach has been to classify these ports into regions, which > I drew using mapedit and saved them as SF polygons. I then calculated their > centroids and those are the coordinates in the ByRoute dataframe. Would > appreciate your comments on any other visualization which you think might be > appropriate. > > If your primary interest is to visualize the flows (not the geography) then a circle plot might work well. Here is an example showing migration flows: https://gjabel.wordpress.com/2016/05/18/updated-circular-plots-for-directional-bilateral-migration-data/ made with https://cran.r-project.org/web/packages/circlize/index.html Kent > Regards > Dhiraj Khanna > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
