I posted a few weeks back I posted about possible ways to document and
share GIS data models. I decided to move forward with a graphical
approach.
I started building diagrams to document my GIS data model for the Public
Land Survey System in the United States. I am drawing these diagrams in
a
Landon,
I missed your previous post. I'm not sure if you are modeling GIS Objects
or a relational database but am guessing you are modeling GIS objects.
Since I missed the earlier post(s). Is there a reason why traditional OO
diagrams such as UML Class diagrams won't work for the GIS data you
Craig,
Because I am working with simple features, the entities I'm modeling are
more like tables in a database than they are objects from
object-oriented software architecture.
My basic set-up is looking something like this:
A sheet for each simple feature type in the data model. This
I think it's an interesting problem to solve (Sharing gis models/processes),
but...
* Way too heavyweight for us, I don't have time/interest to build
maintain sheets of DXFs manually
* Of little practical use for us since our processes typically grow pretty
organically with small meetings and
Rupert Essinger designed a visual GIS workflow language in 1991.
http://www.ncgia.ucsb.edu/Publications/Tech_Reports/91/91-6.pdf
Max Egenhofer designed an entire Direct manipulation UI around Map Algebra.
http://www.spatial.maine.edu/~max/MapAlgebraSurvey.pdf
Both might be inspiring to someone
IMO:
Hi Landon,
Data models with DXF? You're making life difficult for yourself...
You may wish to have a look at the HollowWorld [1] developed by Australia's
CSIRO.
It will help you model your data using UML to generate standards compliant GML
application schemas.
[1]
Obviously DXF isn't a big hit with this community. :]
Thanks for the comments Bruce and Craig. I will consider them carefully.
I may write a short article or blog post outlining my goals and my
decisions for choosing the format I did.
Things are still up in the air, so the feedback is
