+ maxzoom=minzoom
+ while True:
+ minx,miny=deg2num(minlat,minlon,maxzoom)
+ maxx,maxy=deg2num(maxlat,maxlon,maxzoom)
+ print maxzoom,':',minx,'-',maxx,'/',miny,'-',maxy
+ if (maxx-minx>32) or (maxy-miny>24) or (maxzoom==16):
+ break
+ else:
+ maxzoom=maxzoom+1