Enhydris-openhigis - OpenHI layers

Enhydris-openhigis is an app that provides layers (such as water basins and river networks) for the OpenHI project. In the repository there's also MapServer configuration for serving these layers with WMS and WFS.

The app is specific to the OpenHI project and several things are hardwired in the code.

The app contains geographical models such as RiverBasinDistrict, which inherit either Gentity or Garea. So that gis people can connect to the database with a GIS client and update the contents of such tables, writeable database views (e.g. RiverBasinDistricts) are created in the openhigis database schema. Except for collecting objects from several tables (that use multi-table inheritance) into a single view, these views also use SRID=2100, transparently translating to and from 4326, which is what is actually being used for geometry storage in Gentity.

Enhydris-openhigis is free software, available under the GNU Affero General Public License.

Installing and configuring

Install Enhydris 3 or later
Make sure enhydris_openhigis is in the PYTHONPATH, or link to it from the top-level directory of Enhydris.

Somewhere in the Python path, create file urls.py, with contents such as this:

from django.urls import include, path

from enhydris import urls as enhydris_urls
from enhydris_openhigis import urls as enhydris_openhigis_urls


urlpatterns = [
    path("openhigis/", include(enhydris_openhigis_urls)),
    path("", include(enhydris_urls)),
]

In the Enhydris enhydris_project/settings/local.py file, add enhydris_openhigis to INSTALLED_APPS, and specify the urls.py file in ROOT_URLCONF.
In the Enhydris configuration directory, execute python manage.py migrate.
Connect to PostgreSQL with ArcGIS or QGIS and add layers.
Start MapServer and access these layers.

ad0v0/enhydris-openhigis

Enhydris-openhigis - OpenHI layers