Tile Providers

We sometimes get complaints about GPS data apparently not matching the maps implemented in web services tile providers.

Those services have become, years after years, better and better, their developers successfully fronted numbers of representation issues, mostly bound to the fact that the tiles are pictures taken from satellites of flying crafts. Such pictures are also processed to fit a Earth model that's all but a perfect sphere. This implies that some issues can still arise. Take the two following examples to understand the "problem".

Same data, different tile provider. We see that different tiles match differently the same plotted data.

Same data, same tile provider, different time. We can see here that tile providers evolve (improving) in time.