标签: geodjango

有没有人有任何使用PostGIS设置Amazon Elastic Beanstalk的经验(这样我可以利用Geodjango)？

默认设置(RDS,特色MySQL)目前不支持开箱即用的功能:1.PostgreSQL + PostGIS 2.安装C/C++库(如GEOS和Proj.4)的功能

提前致谢

我正在尝试创建一个 docker 设置，以便我可以轻松构建和部署 geodjango 应用程序（带有 postgis 后端）。我有以下文件夹结构：

|-- Dockerfile
|-- Pipfile
|-- Pipfile.lock
|-- README.md
|-- app
|   |-- manage.py
|   |-- app
|   `-- app_web

在我设置 Django 的 Dockerfile 中，我有以下内容：

# Pull base image
FROM python:3.7

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# install dependencies
RUN pip install pipenv
COPY . /code
WORKDIR /code/
RUN pipenv install --system

# Setup GDAL
RUN apt-get update &&\
    apt-get install -y binutils libproj-dev gdal-bin python-gdal python3-gdal

# set …

我有这个Django模型:

from django.contrib.gis.db import models

class Event(models.Model):
    address = models.TextField()
    point = models.PointField('coordinates', null=True, blank=True)

当我使用MySQL同步此模型时,在创建索引时会打印此错误消息:

Failed to install index for events.Event model: (1252, 'All parts of a SPATIAL index must be NOT NULL')

所以,不能使用null=True(假设我想拥有该索引),我还有其他可能性吗？我可以将点(0,0)定义为"空",但是我必须记住我计划使用数据的所有惯例,否则很多事件将发生在非洲大西洋西部的某个地方......

还有哪些其他可能性？

我正在寻找一种方法来获取一个功能集为200个国家的现有ESRI Shapefile.每个国家/地区要素都具有"NAME"属性.我的目标是创建一个Python脚本,添加一个任意(现在)的附加属性,比如"POPULATION".

当然我安装了OSGeo和GeoDjango模块.我到目前为止:

from osgeo import ogr

infile = ogr.Open('sample.shp', 1) #'sample.shp' is a pre-existing ESRI shapefile described above
inlyr = infile.GetLayerByIndex(0)

我错过了一个OGR函数,它允许我将Feature属性字段插入现有的Shapefile中吗？

我有一个配置有GeoDjango的Django应用程序，该应用程序在CircleCI 2.0构建中失败，并出现以下错误：

django.core.exceptions.ImproperlyConfigured: Could not find the GDAL library. Is GDAL installed? If it is, try setting GDAL_LIBRARY_PATH in your settings.

但是，当我'django.contrib.gis'从构建中删除时DJANGO_APPS，settings.py运行成功。

除了postgres和GDAL码头工人镜像之外，是否还有其他步骤在CircleCI中配置GDAL？我（可能是错误地）假设在安装Docker映像后将找到GDAL。以下是我的config.yml：

version: 2
jobs:
  build:
    docker:
      - image: circleci/python:3.6.3

      - image: circleci/postgres:10.1-postgis
        environment:
        - POSTGRES_USER=ubuntu
        - POSTGRES_DB=myapp_test

      - image: geodata/gdal

    working_directory: ~/repo

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
          - v1-dependencies-{{ checksum "requirements.txt" }}
          # fallback to using the latest cache if no exact match is …

I have the following two queries. The first one works fine however the last one which uses location__dwithin returns back Unable to get repr for . Any suggestions on why the last one fails ?

querySet = modelEmployee.objects.filter(location__distance_lte=(modelemp.location, D(mi=150)))

and the other one is:

querySet = modelEmployee.objects.filter(location__dwithin=(modelemp.location, D(mi=150)))

This is what my modelEmployee looks like

class modelEmployee(models.Model):
    user                = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True)
    title               = models.CharField(max_length=200, unique=False, blank=False, null=True)
    skills              = models.ManyToManyField(modelSkill, blank=True)
    location            = models.PointField(srid=32148,max_length=40, blank=True,null=True) 
    objects             = GeoManager() …

我想从以下点x获取坐标：yqueryset

user = User.objects.values('id', 'email', 'username', 'point').first()

这些是我的models：

from django.db.models import Model

from django.contrib.gis.db.models import PointField

class BasePointModel(Model):

    point = PointField(null=True, spatial_index=True, geography=True)

    class Meta:
        abstract = True

class User(AbstractUser, BasePointModel, HashableModel):  # type: ignore

    # First Name and Last Name do not cover name patterns
    # around the globe.
    name = CharField(_("Name of User"), blank=True, max_length=255)
    is_online = BooleanField(_("Is online"), default=False)

我得到以下结果：

{'id': 85270,
 'email': 'username_0@email.com',
 'username': 'username_0',
 'point': <Point object at 0x7f8e061cc2b8>} …

我正在使用 gdal 创建一个 geodjango 容器（基于 Python alpine 官方图像）。启动容器时，出现以下错误：

>>> from django.contrib.gis import gdal
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/li...
django.core.exceptions.ImproperlyConfigured: Could not find the GDAL library (tried "gdal", "GDAL", "gdal2.3.0", "gdal2.2.0", "gdal2.1.0", "gdal2.0.0", "gdal1.11.0"). Is GDAL installed? If it is, try setting GDAL_LIBRARY_PATH in your settings.

我的图像包含以下 gdal 库：

# find / -name libgdal*
/usr/lib/libgdal.so.20
/usr/lib/libgdal.so.20.5.0
/usr/lib/libgdal.a
/usr/lib/libgdal.so

添加GDAL_LIBRARY_PATH='usr/lib/libgdal.so.20'到我的 Django 设置并没有解决这个问题。

我的 Dockerfile，基于官方的 python3 alpine 镜像。

FROM python:alpine

ENV PYTHONUNBUFFERED 1 …

几天前执行 yum upgrade 后，我的 Django 项目出现以下错误

Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
    django.setup()
  File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "/home/joincic/GeoRouting/GeoRouting_2/lib64/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File …

我最近一直在研究 GeoDjango，我正在努力自定义管理部分中显示的 openstreet 地图的默认缩放级别。以下是我尝试过的，但没有效果，请帮助。

from django.contrib.gis import admin

class LocationAdmin(admin.OSMGeoAdmin):
    default_zoom = 5

admin_site.register(ReferenceSpaceLocation, LocationAdmin)

• 我的模型

  class ReferenceSpaceLocation(models.Model):
  
      geometry = models.GeometryField()
  

  Run Code Online (Sandbox Code Playgroud)