Installing Geospatial librariesLink to this heading
GeoDjango uses and/or provides interfaces for the following open source geospatial libraries:
Program |
Deskripsi |
Dibutuhkan |
Versi Didukung |
|---|---|---|---|
Geometry Engine Open Source |
Ya |
3.4, 3.3, 3.2 |
|
Cartographic Projections library |
Ya (hanya PostgreSQL dan SQLite ) |
4.9, 4.8, 4.7, 4.6, 4.5, 4.4 |
|
Geospatial Data Abstraction Library |
Ya (hanya SQLite ) |
2.0, 1.11, 1.10, 1.9, 1.8, 1.7 |
|
IP-based geolocation library |
Tidak |
1.4 |
|
Spatial extensions for PostgreSQL |
Ya (hanya PostgreSQL) |
2.1, 2.0 |
|
Spatial extensions for SQLite |
Ya (hanya SQLite ) |
4.3, 4.2, 4.1, 4.0, 3.0, 2.4 |
Note that older or more recent versions of these libraries may also work totally fine with GeoDjango. Your mileage may vary.
On Debian/Ubuntu, you are advised to install the following packages which will install, directly or by dependency, the required geospatial libraries:
$ sudo apt-get install binutils libproj-dev gdal-bin
Paket pilihan untuk dipertimbangkan:
Dukungan
libgeoip1: for GeoIPgdal-bin: untuk program baris perintah GDAL sepertiogr2ogrpython-gdalfor GDAL's own Python bindings -- includes interfaces for raster manipulation
Please also consult platform-specific instructions if you are on Mac OS X or Windows.
Membangun dari sumberLink to this heading
When installing from source on UNIX and GNU/Linux systems, please follow the installation instructions carefully, and install the libraries in the given order. If using MySQL or Oracle as the spatial database, only GEOS is required.
GEOSLink to this heading
GEOS is a C++ library for performing geometric operations, and is the default
internal geometry representation used by GeoDjango (it's behind the "lazy"
geometries). Specifically, the C API library is called (e.g., libgeos_c.so)
directly from Python using ctypes.
First, download GEOS 3.4.2 from the GEOS website and untar the source archive:
$ wget http://download.osgeo.org/geos/geos-3.4.2.tar.bz2
$ tar xjf geos-3.4.2.tar.bz2
Next, change into the directory where GEOS was unpacked, run the configure script, compile, and install:
$ cd geos-3.4.2
$ ./configure
$ make
$ sudo make install
$ cd ..
Menyelesaikan masalahLink to this heading
Tidak dapat menemukan pustaka GEOSLink to this heading
Ketika GeoDjango tidak dapat menemukan GEOS, kesalahan ini akan muncul:
ImportError: Could not find the GEOS library (tried "geos_c"). Try setting GEOS_LIBRARY_PATH in your settings.
The most common solution is to properly configure your Pustaka pengaturan lingkungan or set GEOS_LIBRARY_PATH in your settings.
Jika menggunakan paket biner dari GEOS (sebagai contoh pada Ubuntu), anda mungkin butuh untuk Pasang binutils.
GEOS_LIBRARY_PATHLink to this heading
If your GEOS library is in a non-standard location, or you don't want to
modify the system's library path then the GEOS_LIBRARY_PATH
setting may be added to your Django settings file with the full path to the
GEOS C library. For example:
GEOS_LIBRARY_PATH = '/home/bob/local/lib/libgeos_c.so'
Lihat juga Catatan saya diisi dengan kesalahan terkait GEOS.
PROJ.4Link to this heading
PROJ.4 is a library for converting geospatial data to different coordinate reference systems.
First, download the PROJ.4 source code and datum shifting files [1]:
$ wget http://download.osgeo.org/proj/proj-4.9.1.tar.gz
$ wget http://download.osgeo.org/proj/proj-datumgrid-1.5.tar.gz
Next, untar the source code archive, and extract the datum shifting files in the
nad subdirectory. This must be done prior to configuration:
$ tar xzf proj-4.9.1.tar.gz
$ cd proj-4.9.1/nad
$ tar xzf ../../proj-datumgrid-1.5.tar.gz
$ cd ..
Akhirnya, konfigurasi, buat dan pasang PROJ.4:
$ ./configure
$ make
$ sudo make install
$ cd ..
GDALLink to this heading
GDAL is an excellent open source geospatial library that has support for reading most vector and raster spatial data formats. Currently, GeoDjango only supports GDAL's vector data capabilities [2]. GEOS and PROJ.4 should be installed prior to building GDAL.
Pertama unduh versi terbitan GDAL terakhir dan keluarkan arsip:
$ wget http://download.osgeo.org/gdal/1.11.2/gdal-1.11.2.tar.gz
$ tar xzf gdal-1.11.2.tar.gz
$ cd gdal-1.11.2
Konfigurasi, buat dan pasang:
$ ./configure
$ make # Go get some coffee, this takes a while.
$ sudo make install
$ cd ..
If you have any problems, please see the troubleshooting section below for suggestions and solutions.
Menyelesaikan masalahLink to this heading
Tidak dapat menemukan pustaka GDALLink to this heading
Ketika GeoDjango tidak dapat menemukan pustaka GDAL, bendera HAS_GDAL akan salah:
>>> from django.contrib.gis import gdal
>>> gdal.HAS_GDAL
False
The solution is to properly configure your Pustaka pengaturan lingkungan or set GDAL_LIBRARY_PATH in your settings.
GDAL_LIBRARY_PATHLink to this heading
If your GDAL library is in a non-standard location, or you don't want to
modify the system's library path then the GDAL_LIBRARY_PATH
setting may be added to your Django settings file with the full path to
the GDAL library. For example:
GDAL_LIBRARY_PATH = '/home/sue/local/lib/libgdal.so'
Catatan kaki