After you have interpolated your data, replace the values in the areas of the ocean with NA, then filled.contour will not plot in those areas.
Hope this helps, > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > project.org] On Behalf Of Victor Homar > Sent: Tuesday, September 16, 2008 9:54 AM > To: r-help@r-project.org > Subject: [R] Blank certain areas of a contour plot > > Hi, > > I'm interpolating a list of syncronous accumulated precipitation > observations collected over a number of raingauge stations sited over > land, over a regular lat/lon grid using akima's interp(). > > Then, I plot and locate geographycally the resulting field with a > filled.contour() and a call to map(). Everything is fine but I need to > "blank" (in Golden Surfer nomenclature) the areas of my domain that lay > over the sea, as I do not have observations there and structures are > completely artificial. > > Is there any function out there that can use the mapsdata database to > "blank" the sea areas of my plot? > Otherwise, can anybody think of a shortcut to get a similar effect on > the final map (not showing the interpolated precipitation areas over > the > sea? > > Thanks a lot in advance, > > Víctor. > > -- > ----------------------------------------------------------------------- > Víctor Homar Santaner > Grup de Meteorologia > > Edif. Mateu Orfila Tel: +34 971 17 1376 > Universitat de les Illes Balears Fax: +34 971 17 3426 > 07122 Palma de Mallorca (SPAIN) Email: [EMAIL PROTECTED] > > Knowledge is contagious. Infect truth. > > ______________________________________________ > 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. ______________________________________________ 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.
