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Results tagged with geodjango
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user 30674
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
1
vote
Accepted
When to use GeometryField?
A GeometryField can hold either a Point, a LineString or a Polygon.
An example: Your table holds information about parks in your city. Your data is incomplete - and for some parks the data is a s …
- 368
2
votes
Convert GIS DB PolygonField to WKT or GeoJson in Django
Try this:
for o in TestUnit.objects.all():
print(o.my_poly)
print(o.my_poly.geojson)
print(o.my_poly.wkt)
print()
To filter:
for o in TestUnit.objects.filter(field1=value1, field2= …
- 368
5
votes
Accepted
Add buffer around polygon in meters using GeoDjango
this:
distance = 5 # distance in meter
buffer_width = distance / 40000000.0 * 360.0
buffered = obj.geofence.buffer(buffer_width)
Source: https://stackoverflow.com/questions/31940674/optimal-query-in-geodjango-postgis-for-locations-within-a-distance-in-meters …
- 368
8
votes
Accepted
Splitting Polygon by Linestring in GeoDjango?
wkt.loads(POLY)
line = wkt.loads(LINE)
merged = linemerge([poly.boundary, line])
borders = unary_union(merged)
polygons = polygonize(borders)
for p in polygons:
print(p)
Since GEOS is used by GeoDjango …
- 368
0
votes
Accepted
How to share accurate location with Geodjango
You will need to build two parts to record user locations:
A front end solution, probably including a javascript based map (for example, by using leaflet or google maps) and the HTML5 geolocation …
- 368
2
votes
Accepted
Structure shared raster data across GeoDjango apps?
Apps are usually divided for different functionality and not per geographic regions. An example data model could be:
class Zone(models.Model):
name = models.CharField(...)
# ... other fields …
- 368
1
vote
Connecting Django to postgresql
os.environ['GDAL_DATA'] = OSGEO4W + r"\share\gdal"
os.environ['PROJ_LIB'] = OSGEO4W + r"\share\proj"
os.environ['PATH'] = OSGEO4W + r"\bin;" + os.environ['PATH']
Run python manage.py check to verify geodjango …
- 368