Easy project. Convert the city of San Diego CA boundary shapefile into latitude and longitude coordinates. For example: [[[40.725486832111,-73.712132536423],[40.723398997475,-73.712331754735],[40.722663024185,-73.715483982576],[40.721960049472,-73.718494436576],[40.7218608482,-73.718919223887],[40.721818065215,-73.71910245655],[40.721734888693,-73.719458629315],[40.721523737192,-73.720362833917],[40.721523628366,-73.720363231214],[40.72148225625,-73.720540647808],[40.721608740305,-73.72058791866],[40.721731009249,-73.720640077683],[40.721746063066,-73.720554729803],[40.721867755645,-73.720505119377],[40.721881017132,-73.720450335644],[40.721885419469,-73.720432134598],[40.724867793004,-73.721003800994],[40.724812670103,-73.721215846469],[40.724776251509,-73.721353781123],[40.724740322091,-73.721489765364],[40.724722534291,-73.721557161402],[40.724922811812,-73.721633135075],[40.724989131408,-73.721658293205],[40.725115021631,-73.721698571954],[40.72578684984,-73.719218786006],[40.726306346022,-73.717275550053],[40.726344365557,-73.717098565747],[40.726382330103,-73.71692165363],[40.726444553858,-73.716553383311],[40.726468794462,-73.716365633155],[40.726495797554,-73.716185195142],[40.72661862581,-73.715206855841],[40.726657572797,-73.714962289322],[40.726673419868,-73.714755632348],[40.726719140883,-73.714387465177],[40.72675994411,-73.714062108524],[40.726803761147,-73.71371285408],[40.726867223621,-73.713217862726],[40.72691294908,-73.712842441454],[40.726937201728,-73.712661940487],[40.726958673314,-73.712467019666],[40.726986451836,-73.712258830376],[40.725741458921,-73.712108310114]]]