Hi!
I am using Shapely to determine if a point is within an area. I am doing so
when storing an item to the database in a pipeline.
Thus in the constructor of the pipeline I read a kml file and then use
Shapely to test if the point is within the shape.
This works perfectly and when I do so a normal command line .py file I get
no debug messages. But if i start the process from within Scrapy (even with
-L ERROR) I keep getting the following debug messages from Shapely:
Trying `CDLL(libgeos_c.so.1)`
Library path: 'libgeos_c.so.1'
DLL: <CDLL 'libgeos_c.so.1', handle 20528420 at 2045c2d0>
*Does Scrapy somehow influence logging in other modules? *
How can I avoid that?
cheers
roman
Code:
from xml.etree import ElementTree
import keytree
from shapely.geometry import Point, shape
class Polygon(object):
def __init__(self, placemark):
self.name = int(placemark.find(
'{http://www.opengis.net/kml/2.2}name').text)
poly = placemark.find('{http://www.opengis.net/kml/2.2}Polygon')
self.shape = shape(keytree.geometry(poly))
def contains(self, point):
return self.shape.contains(point)
class MongoDBPipeline(object):
def __init__(self):
kmlFile = file("places.kml")
doc = kmlFile.read()
kmlFile.close()
tree = ElementTree.fromstring(doc)
kmlns = tree.tag.split('}')[0][1:]
areas = tree.findall(".//{%s}Placemark" % kmlns)
self.polys = set(Polygon(placemark) for placemark in tree.findall(
".//{%s}Placemark" % kmlns))
def findLocation(self, point):
p = Point(float(point[1]), float(point[0]))
hit = -1
for poly in self.polys:
if poly.contains(p):
if hit < 0 or poly.name < hit:
hit = poly.name
return hit
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