changes default interpolation from none to nearest in map.plot
changes default interpolation from none to nearest in map.plot

sdss/marvin,bretthandrews/marvin,sdss/marvin,bretthandrews/marvin,bretthandrews/marvin,albireox/marvin,sdss/marvin,albireox/marvin,sdss/marvin,albireox/marvin,albireox/marvin,bretthandrews/marvin