Juan Lucas, You map looks really good.
I was thinking however that if your NUMERIC_FIELD represents population size assuming the circle area in the legend field is calculated using radius wouldn't NEW_FIELD = SQRT(NUMERIC_FIELD/PI()) give you a better estimate? Cheers Simon Simon Cropper Botanicus Australia Pty Ltd PO Box 160, Sunshine, Victoria 3020. P: 9311 5822. M: 041 830 3437. mailto: scrop...@botanicusaustralia.com.au <mailto:scrop...@botanicusaustralia.com.au> web: www.botanicusaustralia.com.au <http://www.botanicusaustralia.com.au> On 3/02/2010 4:57 AM, Juan Lucas Dominguez Rubio wrote: > Hello. > If your vector layer has a numeric field, you can do this: > - Add a new field of type DOUBLE > - Use the function SQRT in the field calculator so that > NEW_FIELD = SQRT(NUMERIC_FIELD) > - In the symbology dialog, choose 'proportional symbol' with your > favorite settings. > This is what you'll get: > http://www.prodevelop.es/files/fm/public/downloads/documents/screenshots/gvsig_desktop/ita.html > Circle area (not diameter) is proportional to population. > Regards, > Juan Lucas Domínguez Rubio > --- > Prodevelop SL, Valencia (España) > Tlf.: 96.351.06.12 -- Fax: 96.351.09.68 > http://www.prodevelop.es <http://www.prodevelop.es/> > --- > > > _______________________________________________ > Gvsig_internacional mailing list > Gvsig_internacional@listserv.gva.es > http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional > _______________________________________________ Gvsig_internacional mailing list Gvsig_internacional@listserv.gva.es http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional