Hi I have a question regarding the OS Opendata. How accurately aligned is it? I've noticed that in some places the bing orphophotos match up almost perfectly to the buildings below, and it other areas there can be some difference (sometimes up to a meter of). Taking into account the angle the photo was taken from the air, and ground elevation, which should be considered more accurate?
Generally, when adding buildings I trace the outline of the building on opendata, and then using bing aerial, I split the building shape up and add details. I generally have to continually align the bing aerial photo scenery to match the areas on opendata. Even on small areas, the differences can be quite a bit, and I'm doing my best to continually align and adjust. I'm asking (questioning accuracy), since the opendata seems pretty old, forested areas aren't often shaped or are missing and buildings are often missing. Whilst the orphophotos are also fairly old, they still seem more up-to-date in some areas. Regards Tony
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