Reading kml file using python

Question

I have been battling for days to read coordinates LineString using fastkml library in python.
I have imported geometry module in my main program. I am reading like this.
My kml file is stored in string called doc

X = Geometry
Z=x._get,_coordinates(doc)

I got an error that says

the module object has no attributes find

Answer 1

from fastkml import kml import re from fastkml.geometry import Geometry from lxml import etree from xml.etree import ElementTree from io import StringIO, BytesIO

def print_child_features(element):

if not getattr(element, 'features', None):
    return
for feature in element.features():
    y = feature.to_string()
    return y

def print_child2_features(element): """ Prints the name of every child node of the given element, recursively """ if not getattr(element, 'features', None): return for feature in element.features(): print feature.name print_child2_features(feature)

def get_distance(coordinates_str): """gets distance of one path from coordinates string in form of: 14.81363432237944,53.57016581501523,0 14.81411766813742,53.56923005549378,0 14.81880340335202,53.56879451890311 ... look at: http://code.google.com/intl/pl-PL/apis/kml/documentation/kmlreference.html#coordinates """ sum_distance = 0.0 arr = [] coordinates = [] if ' ' in coordinates_str: arr = coordinates_str.split(' ') if len(arr) > 1: for s in arr: if ',' in s: pt = s.split(',') pos_latt = (float(pt[0].strip()), 0, 0) pos_long = (float(pt[1].strip()), 0, 0) position = (pos_latt, pos_long) coordinates.append(position) if coordinates: for i in range(len(coordinates) - 1): start = coordinates[i] stop = coordinates[i + 1] sum_distance += distance.points2distance(start, stop) return sum_distance

if name == ' main ':

#fname = input("Enter KML file name ")
fname = "DBN.kml"
k = kml.KML()
with open(fname) as kmlFile:
    k.from_string(kmlFile.read()) 
x = Geometry()

doc = print_child_features(k)
z= x._get_coordinates(doc)
print z
length=0
if length <= 10:
   print("Transciver is LR")
elif length > 10 and length <= 40:
   print("Transciver is ER")
else:
   print("Transciver is ER")

Answer 2

I did not get the code you have written. But I have written code to read coordinates from Linestrings and other Geometries using fastkml library, so I can help.

# import necessary modules 
from fastkml import kml, geometry 

k = kml.KML() # create fastkml object
k.from_string(doc.encode('utf-8')) # read doc string
document = list(k.features())
self.parse_placemarks(document) 

# parse features throughout the KML File
def parse_placemarks(self, document):
        for feature in document:
            if isinstance(feature, kml.Placemark):  # when there is no folder
                placemark = feature
                self.parse_geometries(placemark)
        for feature in document:
            if isinstance(feature, kml.Folder):
                self.parse_placemarks(list(feature.features()))
            if isinstance(feature, kml.Document):
                self.parse_placemarks(list(feature.features()))

# parse geometry 
def parse_geometries(self, placemark):
   if hasattr(placemark, "geometry"):
      if isinstance(placemark.geometry, geometry.LineString):
         self.linestring(placemark)

# parse linestring
def linestring(self, line):
x, y = self.compute_coordinates(line.geometry)

# find coordinates
def compute_coordinates(self, geometry):
        lons = []
        lats = []
        for coordinates in geometry.coords:
            lons.append(coordinates[0])
            lats.append(coordinates[1])
        return (lons, lats)

You can find how to extract coordinates of other geometries and more about fastkml here : https://medium.com/@wwaryan/the-definite-only-guide-to-fastkml-58b8e19b8454