-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Craig Miller escribió: > 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 wishing to have a formal framework > for documenting GIS workflow in a simple and intuitive way. > > > > I?m still unclear on what type of GIS data models the original poster > wants to document as Smallworld, ArcGIS, GRASS, and others all have > quite different approaches to modeling. > > > > If it?s OO data, etc then UML class diagrams work great and don?t need > to be heavy. In software dev there are many tools that keep the data > models in sync with the code, there is no reason why the same thing > couldn?t be created for GIS data modeling. The diagrams could be GIS > independent, with underlying drivers to read/write data models for > particular GIS packages. > > > > If it is a data model, then there are already tools for keeping an > Entity-Relationship Model (ERM) in sync with the data table. Geometry > is just another data type in the Simple Features view of the world. > > > > Craig >
I agree Craig. My employer (Prodevelop) has been developing for the Valencian Government (Spain) a modelling software, Moskitt[1]. In fact yesterday I was talking with my colleagues about the possibility of spatial-enabling it adding the geometry type (and other things) to the metamodels. Among other features, at this time you can create a typical "alphanumeric" model with moskitt using UML notation, then transform it to ERM and then create the DDL to several databases. So the work to do is to define the spatial data type (and subtypes) and the traces to ERM and then to DDL. I would also love to see the reverse path: inspect a database schema, create the ERM and then UML models. Cheers [1] http://www.moskitt.org/eng/moskitt0/ - -- Jorge Gaspar Sanz Salinas Ingeniero en Geodesia y Cartografía http://es.osgeo.org http://wiki.osgeo.org/wiki/Jorge_Sanz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iQEcBAEBAgAGBQJKqKB/AAoJEAOYD75lvHdBPAQH/iNQALFLCmOwBezVPx1xyneX qS1dIetbh0AN24kQ2r5jcEGvjKoG8OO11/o5TMWxtLKvKngScZO+m1cGEvs4CJMT 1mDKIYpaO3DxWeTqQos7fS6JenYOyKYDOZ5AReOEBeKqF5JDDFefrReAC2kGH9DP TpvW9WyNQpDx164xk0l6ESlCUoiaxVMNhWvy55+zGNQRX0uZB5vcdmvkX13DkL2O JqI6+kAgskzAHkQ6N9uqlLWfos2H6R4XbKiWvYzz0p1k7WohS2OVO30Xn5kPsaq3 5EspJ7w7+Yr5b7dNJWkgZtLZiV3t3haWB78ZDptPHSQZGMbAs3NNqe/41+zw6HA= =G6Ng -----END PGP SIGNATURE----- _______________________________________________ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
