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6 months old is outdated, depending on how fast things change on the ground. Even 2 months old can be outdated (e.g. can be missing houses built since, or show
by bzbarsky 8y ago
6 months old is outdated, depending on how fast things change on the ground.
Even 2 months old can be outdated (e.g. can be missing houses built since, or showing houses that no longer exist).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.
- kozikow 8y agoFor 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.
- bzbarsky 8y agoIt'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.
- rmc 8y agoOpenStreetMap has a lot of things left to map. Sometimes, some correct data is better than no data.