1870-3453 1870-3453 S1870-34532018000501012 10.22201/ib.20078706e.2018.4.2453 Mexico Mexico 00 00 2018 00 00 2018 89 4 1012 1032

1986 113-9 2016 279 391-414 1989 14 110-32 2013 2004 4-7 2009 6 2002 60 25-35 2012 100 195-257 2007 81 71-147 2010 2004 25 33-86 2016 2001 1179-87 2005 1-120 2009 89 43-6 2014 1994 15 116-7 2012 1989 2004 75 55-104 QGIS Development Team 2016 2006 1977