H₂O Really?

http://h2o-really.co.uk

H₂O Really? aims to set up a very basic monitoring database for water quality. Data can be captured by anyone, concerning any water quality parameter, and is available to anyone (i.e. this is an open data project).

Contributing

If you want to help out:

• Check out this repo

• Make a virtualenv (e.g. mkvirtualenv h2o_really)

• pip install -r requirements.txt

• Set up PostGIS with hstore

  Outside your virtual environment, if you haven't ever installed GDAL before:

    sudo pip install numpy
    brew update
    brew install gdal
  

  For those on Mac OS X, we recommend using Postgres.app. In order to enable the spatial element, simply create a database (let’s call it h2o_really) and then enable the spatial element:

    createdb -h localhost h2o_really && psql -h localhost h2o_really
  

  Then you need the hstore and postgis extensions:

    h2o_really=# CREATE EXTENSION hstore;
    h2o_really=# CREATE EXTENSION postgis;
  

  In theory, that’s it...

  Note that we do -h localhost because the Postgres.app is not using the normal sockets approach, rather it binds to 0.0.0.0 (or 127.0.0.1 by default I think) on port 5432. If you’re using linux then probably you don’t need that bit.

  Get out of the Postgres shell (Ctrl+D) and then:

• ./manage.py syncdb

• ./manage.py migrate

• ./manage.py runserver 127.0.0.1:8080

• Browse to http://127.0.0.1:8080 in a browser!

• Add/fix/commit stuff on a branch

• Submit a pull request

Load initial data

Use the load_gqahi_nutrients management command to load the initial data sets, e.g.:

./manage.py load_gqahi_nutrients data/GQAHI_Nutrients/nitrate\ GQA\ grades\ 2009\ \(Wales\).csv --nutrient N

and likewise for the three other CSV files in the data directory (use P as the nutrient argument for Phosphates).

Browse the API

After loading some data, you should be able to browse the API at, e.g.:

http://127.0.0.1:8000/api/v1/observations/measurements/

See openwater/urls.py and observations/api/urls.py for more information.

Browse the data

In order for the interactive maps to work, you will need to register for an API key from CloudMade (http://cloudmade.com/). Once you have a key, include it in your local settings as CLOUDMADE_API_KEY.

With that set up you should be able to visit the map page and see some nice clustered observations:

http://127.0.0.1:8000/observations/map/