[OSM-dev] OSM Wishlist

[Stephan Knauss]

On 12.10.2012 01:58, Tom MacWright wrote:
> What do you want to see happen with OSM's software this year? What are
> the tasks which everyone agrees on, but nobody has had the time to tackle?
There are some ideas around but I'm still missing a tool that can 
graphically show the diffs on an area/changelist.

Let's start with geometry modifications.

Typical situation: I look at the map in my area and I could bet there 
was a road at a specific point. Now I want to know: Was there a road in 
the past?

I want to open my history-browser, select the area of interest and then 
tick a check-box to view all deleted nodes,roads (within a defined 
timeframe, maybe a slider).

If I identify a changeset which did delete that way I want to know what 
else that changeset did.
So I want to have it display the state of the map before the edit and 
the geometry changes of that changeset in a different colorset.

To make it even more convenient intelligent filters can remove changes 
from the display where for example a node was deleted but in the same 
position is an area which has the tags as well. This should filter 
conversion of POI nodes into POI areas.

Deleted roads could be filtered if the road network contains a new road 
connecting the end-nodes so no gap was created. This is a more complex 
filter as it could be multiple edits involved.

So I want a tool that makes it possible to do a quality control by 
checking diffs like it's possible in wikipedia for years. The problem is 
that our data is a lot harder to diff.


Stephan