On Mon, Feb 23, 2015 at 1:05 PM, RichardCooper <[email protected]> wrote: > Hi, > > I'm trying to determine the default method of rasterization used by v.to > rast. > > In the v.to.rast manual it states in relation to the -d option, that 'All > cells touched by the line will be set, not only those on the render path', > but I'm not certain which method is being used by default.
The -d option applies only to lines, default is only those on the render path (thin line). > > I came across a paper by Biagi and Negretti > <http://geomatica.como.polimi.it/workbooks/n2/articoli/lbmn.pdf> * which > describes how by default vectors are rasterized in GRASS 5. The latter > authors refer to the 'center' method as being the standard GRASS command in > 5.0 (p. 4). Is this used in GRASS 7? From my observation (in the Map > Display), by default, vector area appear to be rasterized if the center of > the grid cell falls within the area boundary? Yes, or the other way around: a grid cell belongs to the area where the grid cell's center falls into. Markus M > > I haven't checked through the code, but maybe someone has some knowledge on > the history of v.to.rast? > > Cheers, > Richard > > *http://geomatica.como.polimi.it/workbooks/n2/articoli/lbmn.pdf > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/Default-method-of-rasterizing-in-v-to-rast-tp5189410.html > Sent from the Grass - Users mailing list archive at Nabble.com. > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
