Hi Kostas, The function vectorField in the plotrix package may do what you want. See the example.
Jim On Tue, Jul 25, 2023 at 9:30 PM konstantinos christodoulou <konstantinos.christodoul...@gmail.com> wrote: > > Dear Rcommunity, > > I hope this email finds you well. I am writing to seek your assistance with > a data visualization problem I am facing while working with R. > > Problem Description: > > I have a dataframe named "df" containing the following columns: > "longitude", "latitude", "sea_currents_mag", and "sea_currents_direction". > The dataframe includes sea current estimations, with information about > magnitude (m/s) and direction (degrees) at various longitude and latitude > coordinates. The study domain covers the Eastern Mediterranean Sea (23E to > 36W) and extends from 31S to 37N. It is important to note that the > longitude and latitude coordinates are not evenly spaced across the domain. > > Objective: I am seeking guidance on how to create a plot that visualizes > the sea current vectors (arrows) at each coordinate. Additionally, if > possible, I would like the borders of the surrounding countries to be > included in the plot to provide geographic context. > > Specific Requests: > > 1. Help with plotting sea current vectors (arrows) based on > "sea_currents_mag" and "sea_currents_direction" at each corresponding > longitude and latitude coordinate. > 2. Assistance with including the borders of the surrounding countries in > the plot to provide geographic context. > > I would highly appreciate any advice, code examples, or packages that could > assist me in achieving this visualization goal. > > Thank you very much for taking the time to read my email, and I look > forward to any assistance you can provide. > > Best regards, > Kostas > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
