[GRASS5] new v.to.rast2 arrived

[Markus Neteler]

Hi,

I have added new code to go into 5.1 in CVS:

grass51/notyetuploaded/
new_makefile_system/   -> from Eric Mitchell
                           automake

r.carve/               -> from Helena et al.
                          The program will take the vector stream data,
                          transform them to raster, and subtracts a
                          defaultdepth+additionaldepth from the DEM.

v.to.rast2/            -> from Marco Negretti
                          (This command allows the rasterization of GRASS
                           vector data.  The 'old' method is available: it
                           is called by the G_system command;
                     In this function 2 new rasterising methods are available.
                        -1) dominant unit rastering;
                        -2) importance method.
                           )

v.to.rastdir/          -> from Helena et al.
                               This is a new version of v.to.rast.  It has
                               the following features:
                              (1) It does not use a temporary file. Results
                               go directly to the raster map.  It does this
                               by making one or more passes thru the vector
                               map, rasterizing only a fixed number of rows
                               (in memory, default 512), writing these rows
                               to the raster map, and then repeating for the
                               next set of rows, etc;
                              (2) The line drawing algorithm is better. The
                                  original version of v.to.rast moved each
                                  line to the nearest grid-cell center
                                  before rasterizing.  This version more
                                  nearly reflects the actual path of the
                                  vector lines through the grid cells; and
                              (3) It works for lat/lon databases as well as
                                  planimetric databases.


I assume the v.to.rast2 and v.to.rastdir should be merged in near future.

Cheers

 Markus

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