Grab is messing up OpenStreetMap data in Southeast Asia

Re:Grab is messing up OpenStreetMap data in Southeast Asia by bzbarsky on Thursday December 20, 2018 @02:27PM (#18728192)

6 months old is outdated, depending on how fast things change on the ground.

Even 2 months old can be outdated (e.g. can be missing houses built since, or showing houses that no longer exist). In some areas, this can be a very significant effect.

[ Parent | on HN ]

Re:Grab is messing up OpenStreetMap data in Southeast Asia by kozikow on Thursday December 20, 2018 @07:32PM (#18730547)

For most use cases it's more cost effective to use existing, slightly old imagery. On the other hand, for some use cases, it's necessary to get a very fresh image and commision an airplane flight (or drone if the area is very small) - e.g. hurricane damage mapping.

[ Parent | on HN ]

Re:Grab is messing up OpenStreetMap data in Southeast Asia by bzbarsky on Friday December 21, 2018 @12:50AM (#18731651)

It's more cost effective if your choices are to use the two vintages of imagery, sure. I understand why imagery can be stale.

My point was that OSM data can be much more accurate than the imagery. Or not, depending on location.

[ Parent | on HN ]

Re:Grab is messing up OpenStreetMap data in Southeast Asia by rmc on Friday December 21, 2018 @03:18AM (#18732055)

OpenStreetMap has a lot of things left to map. Sometimes, some correct data is better than no data.

[ Parent | on HN ]