change render_grid() to accept named options with defaults (key,resolution,fields) and allow querying layer by name or index in map.get_layer() and map.render_grid()
change render_grid() to accept named options with defaults (key,resolution,fields) and allow querying layer by name or index in map.get_layer() and map.render_grid()

mapnik/node-mapnik,mojodna/node-mapnik,Uli1/node-mapnik,Uli1/node-mapnik,stefanklug/node-mapnik,mapnik/node-mapnik,CartoDB/node-mapnik,langateam/node-mapnik,mojodna/node-mapnik,gravitystorm/node-mapnik,mojodna/node-mapnik,tomhughes/node-mapnik,CartoDB/node-mapnik,tomhughes/node-mapnik,tomhughes/node-mapnik,Uli1/node-mapnik,stefanklug/node-mapnik,mapnik/node-mapnik,Uli1/node-mapnik,MaxSem/node-mapnik,langateam/node-mapnik,gravitystorm/node-mapnik,langateam/node-mapnik,mapnik/node-mapnik,gravitystorm/node-mapnik,CartoDB/node-mapnik,tomhughes/node-mapnik,mojodna/node-mapnik,langateam/node-mapnik,stefanklug/node-mapnik,gravitystorm/node-mapnik,MaxSem/node-mapnik,stefanklug/node-mapnik,CartoDB/node-mapnik,MaxSem/node-mapnik,CartoDB/node-mapnik,tomhughes/node-mapnik,MaxSem/node-mapnik,langateam/node-mapnik,mapnik/node-mapnik