Anna Petrášová wrote > On Wed, Aug 10, 2016 at 2:01 PM, Helmut Kudrnovsky <
> hellik@ > > wrote: >> hi devs, >> >> is there a way to get bboxes of vector geometries (polygones) in a vector >> layer by pygrass/python grassscript and to loop through the bboxes? > > > I would say, loop through the geometries and use .bbox(): > > https://grass.osgeo.org/grass70/manuals/libpython/pygrass.vector.html#pygrass.vector.geometry.Line.bbox thanks! after some poking around the programming manual and testing with the NC sample dataset: >>>from grass.pygrass.vector import VectorTopo >>>from grass.pygrass.vector.geometry import Area >>>lake = VectorTopo('lakes') >>>lake.open(mode = 'r') >>>lake.bbox() Bbox(258302.909848, 196084.815242, 677118.419101, 610760.703857) >>>lake.read(1) LINEARRING (635797.5422910848900000 258138.3288798251600000, 635788.3098806196400000 258130.5942595548700000, 635783.6369824736600000 258136.4080263839000000, 635779.2935737869700000 258145.4350012375500000, 635776.6213868428000000 258154.4351536379500000, 635774.5834899671600000 258160.7990855638100000, 635770.6960629925600000 258166.9905003495200000, 635776.6043180087600000 258172.6283972222000000, 635782.4570993143100000 258168.6745237157400000, 635786.8794513597400000 258161.4946405562500000, 635790.4419608837900000 258153.9965455597800000, 635794.4360680728000000 258144.5449834555900000, 635797.5422910848900000 258138.3288798251600000) >>>area1 = Area(v_id = 1, c_mapinfo = lake.c_mapinfo) >>>area1.bbox() Bbox(258172.628397, 258130.59426, 635797.542291, 635770.696063) nice feature of pygrass! ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/bbox-of-a-vector-geometry-tp5280283p5280307.html Sent from the Grass - Dev mailing list archive at Nabble.com. _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
