[OSM-talk-nl] Netherland mapping for Tourists / Adress nodes move to building etc

[Florian Lohoff]

Hi Johan,

On Sun, Oct 05, 2014 at 04:49:15PM +0200, Johan C wrote:
> Hi Florian
> 
> I invite you to make comments on the OpenStreetMap forum (
> http://forum.openstreetmap.org/viewforum.php?id=12) because there's more
> Dutch mappers active there. Awaiting your input there, I'll already do a
> short reply to you,

Hmm i am not the kind of Forum user. I like my email program which helps me
to get the threads together ;)
 
> <or a couple of years i have been to Zeeland in Autumn and as always i have
> a little time
> to spend on mapping.>
> 
> Great, especially on POI's there's a lot of work left

Not only pois. Most of the map around here hasnt been touched since the original AND
import. Still a lot of broken highway=pedestrian etc.  What i found:

- A lot and i really a LOT of landuse topology errors. Layered over each other
  without any method i can find. Mixing of landuse and highway nodes e.g..
  Sometimes single trees as a landuse=forest in the middle of the city.
- Use of landuse=farm where landuse=farmland would be right.
- highway=pedestrian for highway=service or path/foot/bicycle type roads.
- highway=unclassified everywhere - no residential in the citys.
- Strange highway name changes - Sometimes not at the crossing but 10m after which
  can not be found on ground.
- A lot of very strange oneways for which some i verified to be non existant.

> <Are you planning to move the addresses on the appropriate building
> outlines?>
> 
> No. Since the address nodes are in the proximity of the entrance that would
> substantially lower the quality

Okay - so i dont move nodes except where it makes sense to an entrance on the
building outline.

> There's no special local preference, so the standard OSM practice applies.
> In the case of one building/one POI I add all information (including
> address info) to the building outline ánd I prefer to put the entrance node
> on the building outline. In the case of one building/multiple POI's I put
> all POI info in a node.

I am just asking before breaking stuff the NL community has agreed to handle
differently.

> <What about strange buildings from the BAG import? I have a couple cases
> where
> the building outline does not at all match the building in a mapbox sat
> imagery.>
> 
> The BAG should contain the correct building outline, since this is
> Cadastral information, nowadays updated very often. But as any database,
> the BAG might incidentally have errors. Satellite imagery though is at risk
> of being well outdated. So in these cases it's possibly best to have groun
> truth info to determine the correct building outline.

I have found buildings which have a start_date of 2014 and are not orthogonal
and dont match the sat imagery. Yes - i'll have a look whether its a new construction
but the data looks like a 5 year old drew something in EPSG:4326

Example:
	http://osm.org/go/0EmBaMKXz--?m=

> <I also found a BAG imported underground parking which is rendered very
> prominent
> on the map. From looking at the data i have the feeling that a layer=-1
> should
> at least be added but.>
> 
> I agree., all underground buildings should have had layer -x

And in case of parking i am not shure its a wise decision to actually import it.

Example:
	http://osm.org/go/0EmByK~r8-?m=

This building complex looks very strange surrounded by some colored area. Yes i know
we shouldnt care on the actual rendering.

> <What about the "and" tags from the original import? What about correcting
> the landuse stuff from the original import (landuse=farm -> farmland etc)
> and all the topology errors with overlapping landuses.>
> 
> I always remove tags like AND_nosr. Of the hours I spend on OSM most are
> updating routing errors and POI's. But maybe others are working on landuse
> errors.

Could we possibly add this to josm standard list of discardableKeys? Then those
tags will vanish whenever somebody touches an object.

Like this:

diff --git a/src/org/openstreetmap/josm/data/osm/OsmPrimitive.java b/src/org/openstreetmap/josm/data/osm/OsmPrimitive.java
index 62d5f90..2fbb28c 100644
--- a/src/org/openstreetmap/josm/data/osm/OsmPrimitive.java
+++ b/src/org/openstreetmap/josm/data/osm/OsmPrimitive.java
@@ -691,7 +691,8 @@ public abstract class OsmPrimitive extends AbstractPrimitive implements Comparab
                             "yh:STRUCTURE",
                             "yh:TOTYUMONO",
                             "yh:TYPE",
-                            "yh:WIDTH_RANK"
+                            "yh:WIDTH_RANK",
+                            "AND_nosr_r"
                         ));
         }
         return discardable;


What about AND:importance_level?

Flo
-- 
Florian Lohoff                                                 f at zz.de
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