> A few questions... > > When the change on a node or way is just a tag change and does not > involve geometry change, are the diff still providing all linked > nodes/ways ?
Yes, they do. Thank you for pointing this out. I think it would be resonable to not include a way when the only change is a tag change of the connected node. However, the opposite is may or may not apply: Imagine somebody runs a database of all italian restaurants in Paris. He stores for each way that is the outline of an italian restaurant the center coordinates. Now somebody reclassifies a restaurant from whatever to italian, or corrects a typo like cuisine=italien to cuisine=italian. Then the database maintainer cannot derive the coordinates of the way because the underlying nodes are not contained in the augmented diffs. Of course you could argument that the same applies to relations, and that the database maintainer could ask for all nodes once he knows that a relevant restaurant appeared. So a general question to all: should we keep off the nodes of ways that have not changed their geometry? Cheers, Roland
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