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Maps Pin Accuracy and placement

Ratings

Perfect
Approx­imate
Next Door
Wrong
Can't Verify

General consid­era­tions

Pin resources
Reliable online map resources, including vector and hybrid views
 
Street imagery
 
Official venue maps
 
Government property registries
 
Satellite vs Vector
Always use the more generous layer toward the pin
 
Boundaries of the Feature
Real or imaginary line that separates (fences, walls, garden plants, bodies of water, other dividers etc)
Half n Half
If no clear divider, draw an imaginary line on the road
Tennis rule
If tip of pin touches the line, it's considered inside the boundary, outside otherwise
Shared spaces
If campus, public roads crossing it are part of the boundary, if particular BU or POI in a campus, the boundary stops when the road is reached
 
Next door
If it drops on the immediate property next to the intended one
 
Must be on the same street (share same street name)
 
Same side
 
First property to any side
 
On the same block
 
Can't Verify
When pin is within the smallest area that can be identified as a potent­ially correct location (clouds covering in sat image), outside it will be Wrong

Single Rooftop

Rating
Explan­ation
Perfect
Falls in the rooftop of the intended property
Approx­imate
Within the boundaries (including on any rooftop that's not the intended one)
Next door
On the next door property
Wrong
Outside the property boundaries or next door
 
Any pin falling outside an Approx­imate area in a shared space will be rated Wrong
Can't Verify
 

Rooftops

With evidence or not
With evidence, only the rooftop is considered Perfect, the rest will be its boundaries
 
Shop in a shopping mall with evidence of the location, if no evidence, the entirety of the mall will be a Perfect
 
Parcel of land
Without a rooftop, all the parcel will be Perfect there will be no Approx­imate
 
Leaning Building
Some imagery can show a leaning building, use consensus of vector, hybrid, street imagery and reliable online map resources
Perfect
Pin falls in the building's actual location as confirmed by the consensus
Approx­imate
Pin falls within the boundaries of the property including on any rooftop that's not the intended one
Wrong
Pin falls outside the property or next door property
Next door or Can't Verify
General guidelines
 
Reside­ntial Property with multiple buildings
More the one building with a single address
Perfect
Any of the rooftop of the house within the boundaries of the property
Approx­imate
Within the boundaries of the property or suppor­t/a­uxi­liary buildings
Next door
Next door
Wrong
Outside the boundaries and next door
Can't Verify
Guidelines
 
Multiple rooftops
Single entities with multiple rooftops
Rules
Same rules as Reside­ntial properties with multiple buildings
 
Campuses
Entire parcel is Perfect, no Approx­imate or Next door

Other Features

Without rooftops*
Natural features (lakes, oceans, creeks, rivers, ponds, seas, forests etc)
Perfect
If natural feature has a defining feature (water for a river, peak of a mountain), pin should fall on that feature
 
If no natural feature (arbitrary boundary (parks, national forests), pin should fall in their polygon
Approx­imate
Pin falls outside the defining features on still on it (slope of a mountain rather than the peak, shore of the lake)
Next Door
No next door
Wrong
Pin falls in an area that does not meet the Perfect of Approx­imate
Can't Verify
General rule
 
Admini­str­ative divisions
Countries, states, provinces, cities, either Perfect or Wrong
 
Parking lots
Shared parking lots are considered Approx­imate, only parking (no businesses attached) can be Perfect
 
Transit POIs
Stops, stations, tool booth, terminals
If does not meet the Single Rooftop or Campus guidelines
Perfect if pin falls on the polygon for the transit POI or in the area you would wait for transit or entrance of underg­round
 
Approx­imate Within 50 meters of where you would wait
 
No Next door
 
Wrong if falls farther than 50 meters, within 50 meters on a non-as­soc­iated rooftop, outside bounda­ries, beyond half a city block (bus stops only)
 
Can't verify follow general guidelines
 
Underg­round Polygon
Find at least three entrances and create boundaries for each entrances (50 meters and Half and Half rule)
 
Then links points
 

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