The GIS topic is pretty complex - you have to decide early on whether
you want a simple spatial interface which is basically a pretty
picture viewer with some associated features OR do you want a real GIS
level approach which encompasses a spatial operations and relations on
data, projection, compilation of layers and maps based on on the input
data, rendering/presenting them, etc, etc. Embedding google maps does
not suffice to call something a GIS framework or module :)
On Apr 9, 4:33 pm, dbb <debe...@yahoo.com> wrote:
> I may be missing something here, when we talked about polygon we mean
> the borders on a map;
> a map can be territory of a nation or a simple building with rooms or
> a piece of land.
> When we use google map, what we actually using is a map that was drawn
> using polygon and in turn
> each polygon is identifed by a zipcode and address.when you say for
> example map(zipcode='20090')
> we mean a polygon identified by zipode '20090',assuming the function
> map is there that takes zipcode and return other attributes.
>
> It is simple to port google map into web2py as far as territory of a
> nation is concerned. But, this is only for a country
> that already has the polygon drawn on the geo political map identified
> by address and zipcode or by one of them. For countries with no
> digital map in place, we should think having a tool that takes ploygon
> as an attribute and
> togther with other attributes, like address or zipcode etc.--- the
> reason I am saying is,the polygon can be identified by GPS for a map
> outside of a building, and by a tool that traces manually a map and
> identify the x,y coordinate of lines (sides)of a ploygon where GPS
> does not work.
> Call it longitude and latitude in a computer it is always x,y with
> distance scaling.
> One can draw the polgon outside and port points of a ploygon to
> web2py, e.g, points for polyon on a map are 2,3;4,5;6,7; and closed
> ploygon. -- web2py will be able to draw the polygon on a console.
> db.define_table('myCountryMapy',
> db.field('polygon', 'points'),
> db.field('zipCode'),
> db.field('address'),
> db.field('city'),
> db.field('state'),
> db.field('country'))
> All fields are required.
>
> for building :
> db.define_table('myBuilding',
> db.field('polygon', 'points'),
> db.field('BuildingName'),
> db.field('RoomName'),
> db.field('Floor'))
> All fields are required.
>
> The former is for geo political map, and later is for building for
> home automation and location identification of equipment with sensors
> attached to them.
>
> If possible web2py can incorporate reading of points from GPS, and
> from tools used to identify points of a ploygon by tracing a map.
>
> Regards:
> dbb
>
> On Apr 8, 3:26 pm, AchipA <attila.cs...@gmail.com> wrote:
>
> > The big question is how web2py will evolve with regard to plugin/
> > appliance architecture, because that would determine how to go about
> > adding geo stuff in a systematic manner. I'm not sure I'd like
> > it as a t2-style addon, but then again adding it to the core would
> > mean way too many dependencies and try/catching.
>
> > A quick glance how I could imagine geo func in web2py (this is just me
> > thinking out loud, I'm aware of sahana and other projects and do not
> > mean to impose these ideas on them):
>
> > MODEL - the DAL would need to be extended with geometry types (I know
> > Massimo is not too keen on this one :), which would allow for some
> > operator magic web2py is known for. So you could do something like
>
> > db(GEOM_POINT(5,5) in db.table.polygon_column).select()
> > db(db.table.polygon.length > 100).select
> > (orderby=~db.table.polygon.area)
>
> > also, some geo-specific velidators could be useful (IS_CONTAINED,
> > IS_IN_RANGE, etc).
>
> > VIEW - It would be nice to have a generic helper which we could
> > interface to popular web mapping tools. Think
> > layer1=LAYER(backend='googlemaps', name.., params....)
> > MAP([layer1, layer2], _width=320, _height=200)
>
> > dbb wrote:
> > > Tim:
>
> > > The URL posted by individuals may have other functions which are not
> > > related to mapping. What we need is to filter out
> > > the Model,controller, and view of the mapping aspect and work on that.
> > > Since this area by itself is big and has many usage in data
> > > communication world- wired and wireless ( including sensors in the
> > > home and outside of home (GPS)).
> > > What I am requesting the people who had URL posted related to the
> > > topics in question, to post a URL that related to mapping only.
> > > As far as my request for mentor is concerned, it is related only to
> > > launchpad.
>
> > > Best Regards:
> > > dbb
>
> > > On Apr 8, 4:39 am, dbb <debe...@yahoo.com> wrote:
> > > > Tim: I have applied for membership.
>
> > > > On Apr 7, 11:52 am, Timmie <timmichel...@gmx-topmail.de> wrote:
>
> > > > > Hello,
> > > > > yesterday I created a web2py team at
> > > > > launchpad.https://launchpad.net/~web2py
>
> > > > > Please feel free to add yourself to the team.
> > > > > It doesn't mean something special so far. But maybe this can
> > > > > facilitate common development at later stage!
>
> > > > > Also, I started a project for Geo stuff:
> > > > > web2py Geo & GIS Extensions -https://launchpad.net/web2py-geo
>
> > > > > My idea is to develop demo & example applications that are using
> > > > > spatial information.
> > > > > Maybe we could grant all team members commit rights to the repository.
>
> > > > > I will try to develop some blueprints for the above mentioned example
> > > > > applications.
>
> > > > > I also asked the Launchpad administrators for a project
> > > > > group:https://answers.launchpad.net/launchpad/+question/66678
>
> > > > > This could provide a umbrella for us to link all individual projects
> > > > > using web2py together.
>
> > > > > I hope you appreciate these actions!
>
> > > > > Regards,
> > > > > Timmie- Hide quoted text -
>
> > > > - Show quoted text -- Hide quoted text -
>
> > - Show quoted text -
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