2012-03-06 47 views
0

根据我在某些相关文章中阅读的内容,我在generate_tiles.py中设置NUM_THREADS = 1(因为我只有一个Linux系统上的单个处理器)。generate_tiles.py在完成请求的缩放级别之前停止

这里是在generate_tiles.py结束请求的缩放级别:

# World 
bbox = (-180.0,-90.0, 180.0,90.0) 

render_tiles(bbox, mapfile, tile_dir, 0, 4, "World") 

# western US 
minZoom = 5 
maxZoom = 8 
bbox = (-126.592,29.0454,-96.225,49.3887) 
render_tiles(bbox, mapfile, tile_dir, minZoom, maxZoom) 

# NM 
minZoom = 9 
maxZoom = 12 
bbox = (-109.22314, 37.28077, -102.56542, 31.46398) 
render_tiles(bbox, mapfile, tile_dir, minZoom, maxZoom) 

# Albuquerque, East Mountains, Jemez, Pecos 
minZoom = 13 
maxZoom = 15 
bbox = (-107.35546, 36.01150, -105.18017, 34.73952) 
render_tiles(bbox, mapfile, tile_dir, minZoom, maxZoom) 

这里是如何generate_tiles.py终止:

... 
unknown : 8 59 104 
unknown : 8 59 105 
unknown : 8 59 106 
render_tiles((-109.22314, 37.28077, -102.56542, 31.46398) /home/user/data/downloads/svn/mapnik-r27279/osm.xml /home/user/data/tilecache/tilelite/ 9 12 unknown) 
9 
10 
11 
12 
render_tiles((-107.35546, 36.0115, -105.18017, 34.73952) /home/user/data/downloads/svn/mapnik-r27279/osm.xml /home/user/data/tilecache/tilelite/ 13 15 unknown) 
13 
14 
15 

所以,你可以看到最后缩放级别它创建的瓷砖是8级,之后它只是创建文件夹,然后退出。如何获取generate_tiles.py以创建高于缩放级别8的图块?

回答

0

render_tiles参数应该是(-109.22314,31.46398,-102.56542,37.28077) 和(-107.35546,34.73952,-105.18017,36.0115)

+0

谢谢您的建议@Laihioh叶。我可以推动一个更好的理解?如果边界框的形式为(X1,Y1,X2,Y2),那么您按照您的建议将其切换为形式(X1,Y2,X2,Y1)即可完成所有工作,这将如何帮助我获得低于缩放级别8.它似乎只会改变我的边界框的尺寸,我真的不想要。谢谢。 – nomadicME 2012-03-30 20:25:01

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