Help with contour plots
On 05/14/2011 04:55 PM, Cristina Silva wrote:
Dear all, I have a SpatialLinesDataFrame with bathymetric lines, built with: cl <- ContourLines2SLDF(contourLines(as.image.SpatialGridDataFrame(prof.grid2["z"]), levels=c(50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000))) This object has all the bathymetric lines. Is there any way to plot some of the lines using this object or do I have to build the SLDF with only the lines that I want to plot?
well, you can do it in a single pass, using selection; try: plot(cl[1:3])
Regards, Cristina
Edzer Pebesma Institute for Geoinformatics (ifgi), University of M?nster Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251 8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de http://www.52north.org/geostatistics e.pebesma at wwu.de