i want to add raster functionality in django using postgis database using
django-raster package and this docs
http://django-raster.readthedocs.io/en/latest/tms.html
here my code :
models.py
from django.contrib.gis.db import models
class RasterWithName(models.Model):
raster = models.RasterField()
name = models.TextField()
add raster using console :
from django.contrib.gis.gdal import GDALRaster
from myapp.models import RasterWithName
gdal_raster = GDALRaster('C:/Users/username/Desktop/image.tif')
rast = RasterWithName(name='one', raster=gdal_raster)
rast.save()
but i am very confused with Rendering tiles and urls.
docs say :
/raster/tiles/layer_id/{z}/{x}/{y}.png where the layer_id is the primary key of
a raster layer. This structure can be used directly in online mapping software
such as OpenLayers or Leaflet. An example request could look like this:
/raster/tiles/23/8/536/143.png, returning a tile in png format of the layer
with ID pk=23 at zoom level z=8 and indexes x=536 and y=143
but indexes x,y mean some random x,y coordinate in image ?anyway i using this
url http://127.0.0.1:8000/raster/tiles/1/8/536/143.png or
http://127.0.0.1:8000/raster/tiles/1/8/20/40.png(origin x,y in my image) and i
take a black window in my browser,any idea where i have wrong in my url
rendering ?
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