update points, import, world file, etc

bikemap/settings.py

@@ -37,6 +37,7 @@ INSTALLED_APPS = (
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'django.contrib.gis',
     'django_extensions',
     'home',
     'tracking',
@@ -80,8 +81,9 @@ WSGI_APPLICATION = 'bikemap.wsgi.application'
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+            'ENGINE': 'django.contrib.gis.db.backends.postgis',
+            'NAME': 'bikemap_gis',
+            'USER': 'tsouza'
     }
 }
 

tracking/data/Readme.txt

@@ -0,0 +1,70 @@
+TM_WORLD_BORDERS-0.1.ZIP 
+
+Provided by Bjorn Sandvik, thematicmapping.org
+
+Use this dataset with care, as several of the borders are disputed.
+
+The original shapefile (world_borders.zip, 3.2 MB) was downloaded from the Mapping Hacks website:
+http://www.mappinghacks.com/data/
+
+The dataset was derived by Schuyler Erle from public domain sources.
+Sean Gilles did some clean up and made some enhancements.
+
+
+COLUMN		TYPE			DESCRIPTION
+
+Shape		Polygon			Country/area border as polygon(s)
+FIPS		String(2)		FIPS 10-4 Country Code
+ISO2		String(2)		ISO 3166-1 Alpha-2 Country Code
+ISO3		String(3)		ISO 3166-1 Alpha-3 Country Code
+UN		Short Integer(3)	ISO 3166-1 Numeric-3 Country Code 
+NAME		String(50)		Name of country/area
+AREA		Long Integer(7)		Land area, FAO Statistics (2002) 
+POP2005		Double(10,0)	 	Population, World Polulation Prospects (2005)
+REGION		Short Integer(3) 	Macro geographical (continental region), UN Statistics
+SUBREGION	Short Integer(3)	Geogrpahical sub-region, UN Statistics
+LON		FLOAT (7,3)		Longitude
+LAT		FLOAT (6,3)		Latitude
+
+
+CHANGELOG VERSION 0.3 - 30 July 2008
+
+- Corrected spelling mistake (United Arab Emirates)
+- Corrected population number for Japan
+- Adjusted long/lat values for India, Italy and United Kingdom
+
+
+CHANGELOG VERSION 0.2 - 1 April 2008
+
+- Made new ZIP archieves. No change in dataset.
+
+
+CHANGELOG VERSION 0.1 - 13 March 2008
+
+- Polygons representing each country were merged into one feature
+- Åland Islands was extracted from Finland
+- Hong Kong was extracted from China
+- Holy See (Vatican City) was added
+- Gaza Strip and West Bank was merged into "Occupied Palestinean Territory"
+- Saint-Barthelemy was extracted from Netherlands Antilles
+- Saint-Martin (Frensh part) was extracted from Guadeloupe
+- Svalbard and Jan Mayen was merged into "Svalbard and Jan Mayen Islands"
+- Timor-Leste was extracted from Indonesia
+- Juan De Nova Island was merged with "French Southern & Antarctic Land"
+- Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Midway Islands
+  and Wake Island was merged into "United States Minor Outlying Islands"
+- Glorioso Islands, Parcel Islands, Spartly Islands was removed 
+  (almost uninhabited and missing ISO-3611-1 code)
+
+- Added ISO-3166-1 codes (alpha-2, alpha-3, numeric-3). Source:
+  https://www.cia.gov/library/publications/the-world-factbook/appendix/appendix-d.html
+  http://unstats.un.org/unsd/methods/m49/m49alpha.htm
+  http://www.fysh.org/~katie/development/geography.txt
+- AREA column has been replaced with data from UNdata:
+  Land area, 1000 hectares, 2002, FAO Statistics
+- POPULATION column (POP2005) has been replaced with data from UNdata:
+  Population, 2005, Medium variant, World Population Prospects: The 2006 Revision
+- Added region and sub-region codes from UN Statistics Division. Source:
+  http://unstats.un.org/unsd/methods/m49/m49regin.htm
+- Added LAT, LONG values for each country
+

tracking/data/TM_WORLD_BORDERS-0.3.prj

@@ -0,0 +1 @@
+GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

tracking/management/commands/import_gpx.py

@@ -2,6 +2,7 @@ __author__ = 'tyrel'
 from django.core.management.base import BaseCommand, CommandError
 from django.contrib.auth.models import User
 from tracking.models import Track, Segment, Point
+from django.contrib.gis import geos
 import xmltodict
 
 import os
@@ -23,56 +24,43 @@ class Command(BaseCommand):
         except User.DoesNotExist:
             raise CommandError("User {0} does not exist".format(self.username))
 
-        if os.path.isdir(filepath):
-            self.import_directory(filepath)
-        elif os.path.isfile(filepath):
+        if os.path.isfile(filepath):
             self.import_file(filepath)
-
         else:
             raise CommandError("{0} is neither an existing file, nor a path.".format(filepath))
 
-    def import_directory(self, directory):
-        pass
-
     def import_file(self, filename):
         with open(filename) as fd:
             obj = dict(xmltodict.parse(fd.read()))['gpx']
+        user = self.user
 
+        create_points_segments_tracks(obj, user)
+
+
+def create_points_segments_tracks(obj, user):
+    # Get some Meta data from the gpx file.
     metadata = obj['metadata']
-        tracks = obj['trk']
-
     start_time = metadata['time']
-
+    # Get the the track and segments from the gpx file.
+    tracks = obj['trk']
     name = tracks['name']
     segments = tracks['trkseg']
+    # Check unimplemented features
     if isinstance(segments, list):
         raise NotImplemented(
             "Haven't run across one that has multiple segments. "
             "Contribute a patch if you have.")
     elif isinstance(segments, dict):
-            # TODO: IF multiple import!
-            track = Track.objects.create(user=self.user,
+        track = Track.objects.create(user=user,
                                      start=start_time,
                                      name=name)
         points = segments['trkpt']
         segment = Segment(track=track, time=points[0]['time'])
         segment.save()
-            print len(points)
         for pt in points:
+            lat, lon = float(pt['@lat']), float(pt['@lon'])
+            poly_pt = geos.Point(lon, lat)
             Point.objects.create(segment=segment,
                                  time=pt['time'],
                                  elevation=pt['ele'],
-                                     latitude=pt['@lat'],
-                                     longitude=pt['@lon'])
-            print "created Track <{0}> start: {1}, stop: {2}".format(
-                track.name,
-                track.start,
-                track.finish
-            )
-
-
-def etree_to_dict(t):
-    d = {t.tag: map(etree_to_dict, t.getchildren())}
-    d.update(('@' + k, v) for k, v in t.attrib.iteritems())
-    d['text'] = t.text
-    return d
+                                 point=poly_pt)

tracking/migrations/0001_initial.py

@@ -2,11 +2,14 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
+from django.conf import settings
+import django.contrib.gis.db.models.fields
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
     ]
 
     operations = [
@@ -15,15 +18,16 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('time', models.DateTimeField()),
-                ('latitude', models.FloatField()),
-                ('longitude', models.FloatField()),
                 ('elevation', models.DecimalField(max_digits=20, decimal_places=2)),
+                ('point', django.contrib.gis.db.models.fields.PointField(srid=4326)),
             ],
         ),
         migrations.CreateModel(
             name='Segment',
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('time', models.DateTimeField()),
+                ('number', models.IntegerField(default=1)),
             ],
         ),
         migrations.CreateModel(
@@ -33,6 +37,7 @@ class Migration(migrations.Migration):
                 ('start', models.DateTimeField()),
                 ('name', models.CharField(max_length=1024)),
                 ('description', models.TextField(blank=True)),
+                ('user', models.ForeignKey(to=settings.AUTH_USER_MODEL)),
             ],
         ),
         migrations.AddField(

tracking/migrations/0002_auto_20150901_0355.py

@@ -1,24 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import models, migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('tracking', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='point',
-            name='latitude',
-            field=models.DecimalField(max_digits=13, decimal_places=10),
-        ),
-        migrations.AlterField(
-            model_name='point',
-            name='longitude',
-            field=models.DecimalField(max_digits=12, decimal_places=10),
-        ),
-    ]

tracking/migrations/0003_track_user.py

@@ -1,22 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import models, migrations
-from django.conf import settings
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ('tracking', '0002_auto_20150901_0355'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='track',
-            name='user',
-            field=models.ForeignKey(default=None, to=settings.AUTH_USER_MODEL),
-            preserve_default=False,
-        ),
-    ]

tracking/migrations/0004_segment_number.py

@@ -1,19 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import models, migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('tracking', '0003_track_user'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='segment',
-            name='number',
-            field=models.IntegerField(default=1),
-        ),
-    ]

tracking/migrations/0005_segment_time.py

@@ -1,21 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import models, migrations
-import datetime
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('tracking', '0004_segment_number'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='segment',
-            name='time',
-            field=models.DateTimeField(default=datetime.datetime(2015, 9, 1, 0, 43, 4, 754000)),
-            preserve_default=False,
-        ),
-    ]

tracking/migrations/0006_auto_20150901_0054.py

@@ -1,24 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import models, migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('tracking', '0005_segment_time'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='point',
-            name='latitude',
-            field=models.DecimalField(max_digits=10, decimal_places=6),
-        ),
-        migrations.AlterField(
-            model_name='point',
-            name='longitude',
-            field=models.DecimalField(max_digits=10, decimal_places=6),
-        ),
-    ]

tracking/models.py

@@ -1,4 +1,5 @@
-from django.db import models
+from django.contrib.gis.db import models
+
 # Create your models here.
 from django.contrib.auth.models import User
 
@@ -39,15 +40,18 @@ class Segment(models.Model):
 
 class Point(models.Model):
     time = models.DateTimeField()
-    latitude = models.DecimalField(max_digits=10, decimal_places=6)
-    longitude = models.DecimalField(max_digits=10, decimal_places=6)
     elevation = models.DecimalField(max_digits=20, decimal_places=2)
     segment = models.ForeignKey(Segment)
 
+    # GeoDjango-specific: a geometry field (MultiPolygonField), and
+    # overriding the default manager with a GeoManager instance.
+    point = models.PointField()
+    objects = models.GeoManager()
+
     def __str__(self):
         return "'{name}' ({lat},{lon}) -> {alt} on {time}".format(
-            lat=self.latitude,
-            lon=self.longitude,
+            lat=self.point.x,
+            lon=self.point.y,
             alt=self.elevation,
             time=self.time,
             name=self.segment.track.name)