Hi, I have found some answers.
First X, Y can be extracted with the field calculator using the functions x() and y(). Sextante can be used to extract the centre point of a polygon. This aside is there any way of consolidating these tasks? Can you calculate the centre point of a polygon in gvSIG? Cheers Simon Simon Cropper Botanicus Australia Pty Ltd PO Box 160, Sunshine, Victoria 3020. P: 9311 5822. M: 041 830 3437. mailto: [email protected] <mailto:[email protected]> web: www.botanicusaustralia.com.au <http://www.botanicusaustralia.com.au> Simon Cropper (Botanicus Australia Pty Ltd) wrote: > Hi Everyone, > > Can someone tell me if gvSIG can be used to establish the centre point > of a polygon? > > ... and subsequently place the X and Y coordinates in fields in the > attribute table of the polygon shapefile? > > ... or alternatively create a point file representing the centrepoint > and be able to assign the XY values to that shapefile. > > What I regularly do in alternative programs (OpenJUMP, Kosmo, Sextante) > is create a point file showing the centrepoint of a set of polygons > (usually representing the sites I have surveyed) and then using ArcView > assign the XY coordinate of the points to the northing+easting fields. > Reproject into Lat-Long and repeat. These coordinates are used to report > the sites locations to government agencies. > > How would you do this in gvSIG? > > Can you use Jpython to do this? > _______________________________________________ Gvsig_internacional mailing list [email protected] http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional
