map great circle routes

[disruptfwd8]

Need help finding out why I'm getting an error. Here the data from the CSV file:
olat,olon,dlat,dlon,route
41.48,-81.8,39.96,-75.2,1
36.09,-115.38,42.38,-71.14,2
34,-84.47,42.38,-71.14,3
40.85,-73.91,34.12,-117.71,4
25.7,-80.4,41.31,-72.92,5
42.9,-112.39,41.78,-87.6,6
37.78,-122.24,34.07,-118.44,7
33.59,-112.1,42.37,-71.11,8
36.11,-115.27,42.37,-71.11,9
44.47,-69.29,41.31,-72.92,10
35.69,-108.98,37.41,-122.17,11
13.53,144.88,29.72,-95.42,12
42.31,-88.43,34.02,-118.29,13
35.26,-96.93,35.21,-97.44,14
36.09,-111.13,43.7,-72.27,15
34,-84.47,42.38,-71.14,16
36.11,-115.27,42.37,-71.11,17
38.84,-94.78,37.87,-122.25,18
40.58,-73.95,40.81,-73.95,19
33.61,-84.49,40.81,-73.95,20

# impoprt packages:
from geographiclib.geodesic import Geodesic
import pandas as pd
from lxml import etree as ET

# set up kml structure:
kml = ET.Element('kml')
document = ET.SubElement(kml, 'Document')

# read data
df = pd.read_csv('datapoints.csv')

# loop through routes, calculate waypoints:

for x in (df.index):
    olat = df.iloc[x,1]
    olon = df.iloc[x,2]
    dlat = df.iloc[x,3]
    dlon = df.iloc[x,4]
    route = df.iloc[x,5]

    p = Geodesic.WGS84.Inverse(olat, olon, dlat, dlon)
    l = Geodesic.WGS84.Line(p['lat1'], p['lon1'], p['azi1'])
    if (p['s12'] >= 1000000):
        num = int(p['s12'] / 100000)  # number of waypoints depending on length
    else:
        num = 10
    output = ''
    for i in range(num + 1):
        b = l.Position(i * p['s12'] / num, Geodesic.STANDARD | Geodesic.LONG_UNROLL)
        output += repr(b['lon2']) + "," + repr(b['lat2']) + ",0 "
    # print(str(x)+"/"+str(len(df))) #progess counter

    # inner part of kml file:
    placemark = ET.SubElement(document, 'Placemark')
    name = ET.SubElement(placemark, 'name')
    name.text = route
    description = ET.SubElement(placemark, 'description')
    description.text = 'route ID: ' + str(x) + '; distance: ' + str(p['s12'])
    linestring = ET.SubElement(placemark, 'LineString')
    coordinates = ET.SubElement(linestring, 'coordinates')
    coordinates.text = output

# complete kml file and save:
tree = ET.ElementTree(kml)
tree.write('wfdistance.kml', pretty_print=True, xml_declaration=True, encoding="utf-8")

Error:
line 20, in <module>
    route = df.iloc[x,5]

Error:
Unresolved attribute reference 'WGS84' for class 'Geodesic'

Please help.

[nilamo]

Unresolved attribute reference 'WGS84' for class 'Geodesic'

p = Geodesic.WGS84.Inverse(olat, olon, dlat, dlon)

The error is telling you that Geodesic doesn't have a WG584. The docs seem to agree.

So... what are you trying to do there?

[disruptfwd8]

Thank you nilamo

I'm trying to replicate this code and it doesn't seem to work for me.

https://public.tableau.com/en-us/s/blog/...ableau-104

Python Code: https://public.tableau.com/s/sites/defau...iccalc.zip

What am i doing wrong?