Hi Erwin, This QC Risk Atlas is interesting. The barangay boundaries depicted here are different in several places from a map published by QC previously that was the source of the QC barangay boundaries that are now in OSM.
~Eugene On Thu, Jun 2, 2016 at 7:04 PM, Erwin Olario <gov...@gmail.com> wrote: > > @Eugene > That was too long ago. > > Anyway, check out Quezon City's Risk Atlas for interesting geospatial data: > https://drive.google.com/file/d/0BwSM5MRaKxejOG05N0lUUHdXdEk/view > > > On Wed, Jun 1, 2016 at 7:21 AM Eugene Alvin Villar <sea...@gmail.com> > wrote: > >> Manila's administrative and legislative districts boundaries were mapped >> because the data or information about them is available. >> >> Manila's administrative districts are defined by law in R.A. 409, which >> is the Revised Charter of the City of Manila. For example, here's the >> description of the boundary of the district of Quiapo: >> >> Beginning at the intersection of the center lines of Calle Azcarraga and >>> Estero de Quiapo; thence along the center lines of Calle Azcarraga, Legarda >>> and E. Mendiola, Estero de San Miguel, the Pasig River, Puente Colgante, >>> Calles Norzagaray and Regidor, and Estero de Quiapo, to the point of >>> beginning. >>> >> >> It's then just a simple matter of determining which modern streets >> correspond to which old street name (Calle Azcarraga is C.M. Recto Avenue, >> while Puente Colgante is now Quezon Bridge, etc.) >> >> Manila's legislative districts are defined in the Ordinance section of >> the 1987 Philippine Constitution. For example, here's the description of >> the boundary of the 5th district: >> >> Barangays Nos. 649-828 N - Mouth of Pasig River inland to point Paz M. >>> Guanzon Street extending to Estero de Pandacan; NE - Estero de Pandacan up >>> to Pedro Gil Street to Tejeron Street up to boundary of Manila and Makati; >>> SE - City boundary between Manila and Makati up to Estero de Tripa de >>> Gallina; S - City boundary between Pasay and Manila down to Roxas Boulevard >>> up to edge of reclaimed areas westward to Manila Bay; W - Manila Bay up to >>> mouth of Pasig River. >>> >> >> ~Eugene >> >> >> >>> On Sat, May 28, 2016 at 4:54 PM, Jherome Miguel <jheromemig...@gmail.com >>> > wrote: >>> >>>> As a side note, Manila's districts are not obviously marked (possibly >>>> the same as the case of Quezzn City), but official boundaries assigned by >>>> the City of Manila has been mapped (the districts of Manila are officially >>>> designated). Possibly those district boundaries are mapped based on >>>> physical features and place addresses. >>>> >>>> On Sat, May 28, 2016 at 4:43 PM, Jherome Miguel < >>>> jheromemig...@gmail.com> wrote: >>>> >>>>> I created the Cubao boundary by extrapolating some data from >>>>> boundaries of barangays that may possibly form part of Cubao. >>>>> >>>>> Although "general areas", the approximate boundaries can be mapped. >>>>> Also, some barangays are inside a certain district, and a ground survey on >>>>> addresses of places on those barangays can be used to verify them. >>>>> >>>>> A few can be defined by surrounding streets (e.g. Santa Mesa Heights >>>>> district boundaries are formed by its surrounding roads,like Quezon >>>>> Avenue, >>>>> Araneta Avenue, Del Monte Avenue, and Mayon Avenue). and water bodies like >>>>> rivers, or both (Diliman looks like to be one example. The Diliman Creek >>>>> forms one part of the approximate boundary, while roads, like Katipunan >>>>> Avenue, Commonwealth Avenue, North Avenue, West Avenue, a part of Quezon >>>>> Avenue, Don A. Roces Avenue, and a portion of Tomas Morato Avenue forms >>>>> the >>>>> rest. >>>>> >>>>> Hope this advice helps. >>>>> >>>>> On Sat, May 28, 2016 at 3:47 PM, Eugene Alvin Villar <sea...@gmail.com >>>>> > wrote: >>>>> >>>>>> I don't know if QC's districts have ever been defined. As far as I >>>>>> can tell, they are general areas and there is no hard line delineating >>>>>> these districts. >>>>>> >>>>>> On Sat, May 28, 2016 at 2:40 PM, Jherome Miguel < >>>>>> jheromemig...@gmail.com> wrote: >>>>>> >>>>>>> Quezon City's political map on OpenStreetMap is mostly complete, >>>>>>> with every barangay mapped, but the district boundaries are still >>>>>>> missing, >>>>>>> although district nodes are already added. I started to add nodes for >>>>>>> those >>>>>>> districts, like Novaliches, New Manila, Santa Mesa Heights, Diliman, and >>>>>>> Balintawak, but district boundaries are still undefined. Can someone map >>>>>>> Quezon City's district boundaries, while I'll add the others, like the >>>>>>> Project areas La Loma, and Bago Bantay (possibly the same as the "Munoz" >>>>>>> area)? >>>>>>> >>>>>>> _______________________________________________ >>>>>>> talk-ph mailing list >>>>>>> talk-ph@openstreetmap.org >>>>>>> https://lists.openstreetmap.org/listinfo/talk-ph >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> _______________________________________________ >> talk-ph mailing list >> talk-ph@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-ph >> > -- > > -- Dispatched by mental telepathy via Ansible >
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