What about setting the aspect ratio? image(volcano, asp = 1)
Note that plotting functions (including image.SpatialGridDataFrame) will set the aspect ratio to 1, or if unprojected to a ratio based on the latitude of the data. See ?Spatial. Cheers, Mike. On Mon, Jul 5, 2010 at 12:25 PM, Chen, Shaofei <shaofei.c...@utdallas.edu> wrote: > Dear All, > > Using "image" function, we can map a matrix. If the matrix is square, the map > will look fine. However, if the matrix is not square, the map will be > distort. For example, the dimension of volcano in the help file is 87 by 61. > So the unit length of x axis is different from it of y axis. I bet this is > not good for geovisualization > Is there anyway to image a non-square matrix without distortion? I think > combining the data matrix with a matrix with "NA" to form a square is an > option. But it looks not very clever. > Thank you very much! > > Best, > Shaofei > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
