Dear List, I am trying to use the PBSmapping package to import and plot the shoreline of Hawaii. I am having problems importing and plotting the specific regions that I would like to plot. Specifically, I can't get it to import the range of x variables that I would like. I think my problem is with a variable called xoff, but I have no idea what it is, what it does, or how I am supposed to use it. It's default value is -360, but I have found examples in the PBSmapping web publication of it being set to zero as well. The help files provides the following definitions:
xlim range of X-coordinates to clip. Range should match the transform xoff. xoff transform the X-coordinates by specified amount. I can import certain regions of GSHH, but I don't seem to be able to limit them like I want using xlim. If I change xoff to something besides -360 I get different sizes of plots that are all the color I am using for land. I have the following: Hawaii.GSHH<- importGSHHS(GSHHfile, xlim=c(-156.3,-155.92), ylim=c(19.45,19.5), xoff=-360) The GSHHS shoreline data is found at: http://www.soest.hawaii.edu/wessel/gshhs/gshhs.html Any suggestions on what is going on? Thanks, Tim Tim Clark Department of Zoology University of Hawaii ______________________________________________ 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.
