creating candidate layer

nirodhaneupane

Hi there,

I am still a beginner to gis and I am trying to do a network analysis for finding optimum litter bins in an area. I already have data for existing litter bins however I need to create data for candidate litter bins which could be an option to place a litter bin in that area. With placing litter bins in that area, there is no restriction, so what could be a best way to locate candidate layer using network analysis?

Many thanks

Nirodha

nirodhaneupane

Hi Dan,

I have tried to answer on points, hope this makes sense.

• what are the reddish areas?  building? (I hope not) buildings plus stuff?
  • Yes these are buildings and surrounding areas where areas have boundaries.
• there are some linear patterns within the data, suggesting paths....where are those?
  • the red linear line is creek (digitized)
• there are clusters of points near the unknown red areas...some at specific groupings some appear linearly along the 'thing'...what is near the existing bins.
  • cluster of red points (bins) are because these are seating areas, and therefore bins are placed aside near most of the seating areas
• there are large areas of yellow...first question...why no bins?  forbidden zone? no paths? parking lot? forest?  why is this important? you need to delineate areas where bins 'cannot' appear.  That is just as important as where they 'can' locate.
  • Parking lot, forest areas and grassland (accessible for people to walk through) but have lower pedestrian movements around those areas
• the bluish objects look like roads...or canals...or just poorly digitized things...for the most part there are no bins in them, but usually beside them (except for one lone point in the bottom right hand corner...either a misplaced bin...people messing with bin placement...strategically located drive-thru bin service?
  • yes, blue objects are roads, yes your right that there are little bins beside these roads.

Is it possible to do a search for location for litter bins in every 5 minutes and create candidate layer out of this. And later do a location allocation with the data? (I also have created a population density data)

Many thanks

Nirodha