Mapping Quality

Contents 1 Introduction 1.1 Statistical values 1.2 Output files 1.3 Parameters 2 If something is wrong with your place... 3 Results 3.1 Austria 3.2 Germany 4 Things to keep in mind 5 Wishes 6 Program

Introduction

You can see the gray default circles, the orange auto sized places and the blue osm data based places (by radius or by area/way).

The program mappingquality.pl parses osm files for unmapped and sparsely mapped places and provides data for Slippy Unkartografiert. Furthermore it provides some statistical data of all places:

Statistical values

• mean number of nodes per place type
• population
• number nodes inside type distance
• number FIXME nodes
• number highway=residential
• number highway=residential without name
• length of highway=residential roads
• number highway=road
• number FIXME ways
• number amenities
• number buildings (mapped as ways, not nodes)

Output files

• input for slippy map (see above)
• HTML file for viewing
• CSV file (UTF-8) for use in Office tools like Calc or Excel. You can then process the data further.
• Graphic showing map with some numbers (node count, residential count and length, building and amenity count)
• CSV (UTF-8) List of streets per place (place name, place key, street name, street length)

For the street list the following values are considered: residential, service, living_street, unclassified, primary, secondary, tertiary.

Parameters

The program first assumes the radius per place type. See HTML output for actual values. This can be overridden by OSM data. If a place has a corresponding way (area) that is tagged as place with correct name and type or if a place has one of the following tags (keys to be precise)

• radius
• place_radius
• diameter
• place_diameter

the radius or diameter can be specified in

• meters or
• kilometers

So valid values would be

• 750 m
• 2.5 km

Examples:

• radius=200 m
• place_diameter=2 km

Additionally the program tries to identify the radius by the extension of residential streets in the vincinity.
So basically the priority for defining the radius/extension of a place is the following:

• osm data (place area)
• osm data (radius or diameter in place node)
• automatically detected (circle or other)
• defaults

The automatic function works best for mapped villages and towns. Crowded cities are not its turf.

If something is wrong with your place...

Make sure that

• your place has a place node
• your place node is tagged correctly (place=village i.e., name=name or place_name=name)
• your place size was determined automatically and correct (if not, create a place way/area)
• your place has a way surrounding it with proper tags (place=village i.e., name=name or place_name=name)
• your place way is closed! (meaning that the first node equals the last one)
• your tag values match each other so a way corresponding to a place node can be found

See also Key:place and Talk:Key:place

Results

ATTENTION

• The graphic files are VERY large. Please download first and use graphics program to display. Some browsers may have problems displaying the files.
• The CSV files are also very big. Maybe you have to use an editor first to cut them for fitting into Excel or Calc. Linuxer may use grep instead.
  
  

Austria

• Austria HTML CSV PNG Streets CSV
  
  

Germany

• Baden-Württemberg HTML CSV PNG Streets CSV
  
  
• Bayern Nord HTML CSV PNG Streets CSV
• Bayern Süd HTML CSV PNG Streets CSV
• Berlin HTML CSV PNG Streets CSV
  
• Brandenburg HTML CSV PNG Streets CSV
  
• Bremen HTML CSV PNG Streets CSV
  
• Hamburg HTML CSV PNG Streets CSV
  
• Hessen HTML CSV PNG Streets CSV
  
• Mecklenberg-Vorpommern HTML CSV PNG Streets CSV
  
• Niedersachsen HTML CSV PNG Streets CSV
  
• Nordrhein-Westfalen HTML CSV PNG Streets CSV
  
• Rheinland-Pfalz HTML CSV PNG Streets CSV
  
• Saarland HTML CSV PNG Streets CSV
  
• Sachsen HTML CSV PNG Streets CSV
  
• Sachsen-Anhalt HTML CSV PNG Streets CSV
  
• Schleswig-Holstein HTML CSV PNG Streets CSV
  
• Thüringen HTML CSV PNG Streets CSV
  

Things to keep in mind

• By design a street name will only be reported once even if there are two separate streets with the same name at the same place.
• At the moment the program for performance reasons assumes that the radius of a place is not bigger than 10km (lat) and ~6km (lon). However for future or individual runs this value can be changed.

Wishes

• add position of streets to street lists
• support relations for boundary of places
• rendering of coastline/sea

will be difficult since data/ways might be truncated and then the whole map will be flooded :-)

• Do also for Austria not only for Germany.

it shall be done

Program

mappingquality.pl