django-admin.py startproject projname
cd projname
python manage.py startapp myapp
# Edit settings.py to add myapp to the INSTALLED_APPS
cd myapp
mkdir -p management/commands
touch management/__init__.py
touch management/commands/__init__.py
cd management/commands/

import django.core.management.base as base

class Command(base.NoArgsCommand):
  help = 'Describe the Command Here'
  def handle_noargs(self, **options):
      print 'hello world'
      print options

cd ../../.. # back to the project directory
python manage.py help



Type 'manage.py help ' for help on a specific subcommand.



Available subcommands:
  cleanup
  compilemessages
  ...
  flush
  hello_world
  inspectdb
  loaddata
  ...
python manage.py hello_world
  hello world
  {'pythonpath': None, 'verbosity': '1', 'traceback': None, 'settings': None}

UNH in 2020 from UNH Video on Vimeo.

...
Several organizations have provided their ship-collected data for
publication in Google Earth to improve our undersea maps. The Center
for Coastal and Ocean Mapping - Joint Hydrographic Center, has shared
large swaths of underwater depth data collected from their expeditions
north of Pt. Barrow, Alaska into the Arctic. The Living Oceans Society
has shared their surveys off of the west coast of British Columbia,
Canada, so you can now zoom around the Oglala seamount
...

• New Raster Drivers: BAG, EPSILON, Northwood/VerticalMapper, R, Rasterlite, SAGA GIS Binary, SRP (USRP/ASRP), EarthWatch .TIL, WKT Raster
• GDAL PCIDSK driver using the new PCIDSK SDK by default
• New Vector drivers : DXF, GeoRSS, GTM, PCIDSK and VFK
• New utilities: gdaldem, gdalbuildvrt now compiled by default
• Add support for Python 3.X. Compatibility with Python 2.X preserved
• Remove old-generation Python bindings.
• Significantly improved raster drivers: GeoRaster, GeoTIFF, HFA, JPEG2000 JasPer, JPEG2000 Kakadu, NITF
• Significantly improved vector drivers: CSV, KML, SQLite/SpataiLite, VRT

...
A real-time uncertainty output from the SeaBat 7125 may be used in
PDS2000, along with information from other sensors to calculate a TPE
(Total Propagated Error). Soundings may be filtered by setting either
the relevant IHO order or by defining a custom vertical error
limit. Other new features in SeaBat 7125-SV include roll
stabilization, XYZ offsets for flexible transducer installations,
Quality filter and advanced diagnostic which increase survey
efficiency. Further, AutoPilot uses sonar tuning values from a default
or user generated look-up table for hands free sonar operation.
...
Six of the SeaBat sonar systems are to be mounted on Hydrographic
Survey Launches of the SV Rainier, SV Fairweather, SV Thomas Jefferson
and SV Ferdinand R. Hassler while the seventh system will be mounted
on the SV Nancy Foster.
...

Transportation networks play a crucial role in human mobility, the
exchange of goods, and the spread of invasive species. With 90% of
world trade carried by sea, the global network of merchant ships
provides one of the most important modes of transportation. Here we
use information about the itineraries of 16,363 cargo ships during the
year 2007 to construct a network of links between ports. We show that
the network has several features which set it apart from other
transportation networks. In particular, most ships can be classified
in three categories: bulk dry carriers, container ships and oil
tankers. These three categories do not only differ in the ships’
physical characteristics, but also in their mobility patterns and
networks. Container ships follow regularly repeating paths whereas
bulk dry carriers and oil tankers move less predictably between
ports. The network of all ship movements possesses a heavy-tailed
distribution for the connectivity of ports and for the loads
transported on the links with systematic differences between ship
types. The data analyzed in this paper improve current assumptions
based on gravity models of ship movements, an important step towards
understanding patterns of global trade and bioinvasion.