How can I change the longitude scale on the plotMap() PBSmapping package
You cannot, plotMap() decides things for you. For more flexibility than: polys <- data.frame(PID=rep(1,4), POS=1:4, X=c(0,1,1,0), Y=c(0,0,1,1)) plotMap(polys, xlim=c(-.5,1.5), ylim=c(-.5,1.5), projection="LL") from the help page, consider trying: library(sp) library(maptools) sp_polys <- PolySet2SpatialPolygons(as.PolySet(polys, projection="LL"), close_polys=TRUE) plot(sp_polys, xlim=c(-.5,1.5), ylim=c(-.5,1.5), axes=TRUE) Also consider following up on the R-sig-geo list. Roger
Fabio Caltabellotta wrote:
Dear R-helpers, I am using the package PBSmapping and I have a question on the fuction plotMap: How can I change the longitude scale on data(worldLLhigh)? I changed the coordinates of ylim () and xlim () on the function plotMap to plot my study area. I would like to plot the Brazilian coastline that goes from the latitude -26.0?S to -21.0?S and longitude from -48.0?W to -45.0?W. However how can I change the scale value of xlim ranging from 312.0 to 315.0 for the scale of longitude 48.0W-and-45.0W to the same area?. Can anyone help me? Thanks, -- Fabio Prior Caltabellotta, M.Sc. Doutorando em Zoologia - Campus Botucatu Universidade Estadual Paulista "J?lio de Mesquita Filho" - UNESP Laborat?rio de Pesquisa em Elasmobr?nquios http://lattes.cnpq.br/2735351775616389 End: Pra?a Infante Dom Henrique s/n - Parque Bitar? 11330-150 - S?o Vicente-SP, Brasil Tel: +5511 81649946 <:(((((<_____<")))><( `?.??.???`?.?.? <"))))>_____<:(((((<_____
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----- Roger Bivand Economic Geography Section Department of Economics Norwegian School of Economics and Business Administration Helleveien 30 N-5045 Bergen, Norway
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