I am on the process of creating how to create a map from scratch using web2py.
On Apr 9, 11:43 am, AchipA <[email protected]> wrote: > TheGIStopic 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 realGIS > 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 aGISframework or module :) > > On Apr 9, 4:33 pm, dbb <[email protected]> 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 <[email protected]> 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 <[email protected]> wrote: > > > > > Tim: I have applied for membership. > > > > > > On Apr 7, 11:52 am, Timmie <[email protected]> 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 &GISExtensions -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 -- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "web2py Web Framework" group. 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