def downloadSurroundingStreetView(point, directory, picNum, ptrNum,
intersectionPointInfo):
"""
Call Google street view image api to get the four surrounding images at the
given point.
:param point: (float, float) longitude and latitude
:param directory: the directory for saving the images
"""
result = []
for heading in CONFIG["gmap"]["headings"]:
filename = "%s/%010d_%s_%s_%s.jpg" % (directory, picNum, str(
point[1]), str(point[0]), heading[0])
paramDict = GoogleStreetView.makeParameterDict(point[1], point[0],
heading[1])
metadata = GoogleStreetView.getMetadata(paramDict)
result.append([
picNum, ptrNum,
str(point[1]) + "," + str(point[0]), heading[0], metadata["date"],
filename.split("/")[-1],
",".join(intersectionPointInfo[(point[0], point[1])])
])
param = GoogleStreetView.makeParameter(point[1], point[0], heading[1])
GoogleStreetView.downloadStreetView(param, filename)
picNum += 1
return result
def isValidPoint(point):
"""
Call Google Street Image View metadata API to check the existance
of the street view image for the given point.
:return:
"""
headings = CONFIG["gmap"]["headings"]
params = GoogleStreetView.makeParameterDict(point[1], point[0], headings[0][1])
return GoogleStreetView.isValidPoint(params)
def findValidIntersections(intersections):
Logger.printAndWrite("Checking valid intersections")
start = 260000
delta = 10000
msg = "Starting record = %d" % start
Logger.printAndWrite(msg)
headingZero = CONFIG["gmap"]["headings"][0]
validIntersections = {}
i = 0
for point in intersections.keys()[start:start + delta]:
param = GoogleStreetView.makeParameterDict(point[1], point[0],
headingZero)
if GoogleStreetView.isValidPoint(param):
validIntersections[point] = intersections[point]
i += 1
if i % 10 == 0:
sys.stdout.write("\r%d" % i)
return validIntersections
def getSurroundingStreetViewLinks(point, picNum, ptrNum, intersectionPointInfo):
"""
Call Google street view image api to get the links for the four surrounding images at the
given point.
:param point: (float, float) longitude and latitude
:param directory: the directory for saving the images
"""
result = []
for heading in CONFIG["gmap"]["headings"]:
try:
filename = "%010d_%s_%s_%s.jpg" % (picNum, str(point[1]), str(point[0]), heading[0])
paramDict = GoogleStreetView.makeParameterDict(point[1], point[0], heading[1])
metadata = GoogleStreetView.getMetadata(paramDict)
param = GoogleStreetView.makeParameter(point[1], point[0], heading[1])
imageLink = GoogleStreetView.getStreetViewLink(param)
if "date" in metadata:
date = metadata["date"]
else:
date = "Unknown"
print filename + " has now date"
result.append([
picNum,
ptrNum,
str(point[1]) + "," + str(point[0]),
heading[0],
date,
filename,
",".join(intersectionPointInfo[(point[0], point[1])]),
imageLink
])
picNum += 1
except:
print metadata
break
return result
def getPointInfoToFile(points, filename):
lines = []
lineFormat = "%s==Actual Location:%s,%s|date:%s"
counter = {}
counter["no date"] = 0
headingsZero = CONFIG["gmap"]["headings"][0]
prog = 0
for point in points:
lngLat = [float(p) for p in point.split(",")]
param = GoogleStreetView.makeParameterDict(lngLat[1], lngLat[0],
headingsZero)
info = GoogleStreetView.getMetadata(param)
if info["status"] == GoogleStreetView.OK:
if 'date' in info:
data = lineFormat % (point, info['location']['lng'],
info['location']['lat'], info['date'])
else:
counter['no date'] += 1
data = lineFormat % (point, info['location']['lng'],
info['location']['lat'], "0000-00")
lines.append(data)
else:
print "Point err:", point
prog += 1
if prog % 10 == 0:
sys.stdout.write("\r%d" % prog)
print "\nnumber of points that have no date: %d" % counter['no date']
lines = "\n".join(lines)
lines += "\n"
output = open(filename, 'a')
output.writelines(lines)
output.close()