search for: proj4r

I'm hoping someone can help me. I have downloaded the proj4R.zip and under my version of R (2.3.1) I install the package from local zip file. This worked great. I then type library(proj4R) to load the library and I get the error: Error in library(proj4R) : 'proj4R' is not a valid package -- installed < 2.0.0? I have read through the install docu...

Hi: Is there any function in R which can convert the long/lat to UTM(Universal Transverse Mercator)? There are quite a few converters on Internet. However, the interface is designed as input->output which I can not convert lots of locations at the same time. Another question is whether there is a function in R which can tell the time zone from the location's lat/long? Thank you!

...rrently I defined three classes: + SpatialData +-- SpatialDataFrame +-- SpatialDataFrameGrid SpatialData is only meant as a base class; it only contains a bounding box (2D or 3D data), and information about projection (if present), anticipating (re)projecting facilities in Roger's proj4R package. SpatialDataFrame extends this class; holds a data frame, and the information where in the data frame the coordinates (2D or 3D) are stored. SpatialDataFrameGrid extends SpatialDataFrame for the case where the data are on a regular 2D/3D grid; it contains the offset of the grid, the cells...