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baditaflorin's diary

Recent diary entries

OSM POI age of different cities around the world

Posted by baditaflorin on 25 September 2014 in English (English)

Playing with Mapbox Studio and the ability to use the osm_id of a POI, i managed to make a historic map of the POI of 24 selected cities around the world

In a totally random way i will show some of the different type of cities that we have in OSM, in the terms of relevance to people that are interested in going in that city and using osm for POI

Most of the POI in Ankara were added in 2006 - 2008 Alt text

Berlin Alt text

Bruxelles Alt text

Bucharest Alt text

Budapest - An example of a systematic, mapping party approach ( somebody with local knowledge can correct me if i am wrong ) Alt text

Buenos Aires - It would be useful to see how many of the new edits are from local people, to see how sustainable is that and how much the local community will continue to add after the SOTM Alt text

Cluj Napoca Another example of the power of mapping party, for this ever-growing city, that will be in 2015 the European Capital of Youth Alt text

Dublin Alt text

Frankfurt - Central, POI only around important streets, approach Alt text

Hong Kong Alt text

L.A. - From the types of POI that where added in 2009, Los Angeles had an import of date in 2009, but except from that the city is almost dead in terms of POI growth Alt text

London - is more complete then it looks on this map. In Mapbox i took only the POI that are a node . In London there are a lot of POI that they are tagged as a building. For the sake of simplicity those tag`s are only rendered as text, with a small white dot.

It was a technical stuff, i would have to calculate the age for the POI of the ways.

Alt text

Madrid Alt text

Melbourne - a example of a city center POI useful city Alt text

Moskow - A beautiful example of a complete city, where you can find POI in all the city, not just in the city center Alt text

Munchen Alt text

New York - except a import in 2009, in the last 2 years the city center started getting some kind of attention Alt text

Prague Alt text

Rotterdam Alt text

Sofia Alt text

Tokio - Is growing fast, in a decentralized, all over the map type Alt text

Wien Alt text

Zagreb Alt text

Zurich Alt text

You can download all the Full Resolution maps here https://www.dropbox.com/sh/whixmqcr14n873y/AAA5cRJev87o7dcdjAnKsylda?lst

1.6 Gigapixel image - OSM Point of Interest density map of Europe

Posted by baditaflorin on 10 September 2014 in English (English)

After doing the Romanian OSM node density map, i wanted to do something more globally

The map was created by exporting using Qgis Print Composer in 4 different 24806x17716px , because of the limitations of QGIS that does not allow the export of bigger files yet.

The date was obtained using overpass-api, but for simplicity, if you want to do something similar, use the europe planet extract.

There where over 7 million shop,amenity, tourism and leisure POI in Europe that where combined in a single file using the Qgis Plugin > Vector > Data Management Tools > Merge ShapeFiles to one

Using Qgis plugin mmqgis i created a network of around 800.000 hexagons, and using the Qgis plugin "count in polygon" i was able to figure it how many POI are in each hexagon. To get to a more correct answer, i calculated the area for each of the 800.000 hexagons, that is ranging from about 18 square kilometers in south of Sweden to 28 sq km in Madrid, Spain and did a POI/area to get a more exact answer, POI per sq km

TOP 200 POI by number or POI

top200 And the download link

OpenStreetMap POI density per km2

density openstreetmap poi Download link

1.61 GigaPixel OpenStreetMap POI Map of Europe gigapixel openstreetmap POI

Explore the 1.61 gigapixel on photosynth :

Just how much of Europe have at least 1 POI per km2 ?

  1. 361701 km2, similar with the area or Germany, have a density of just 1 POI per km2
  2. 169428 km2, similar with the area or Greece, have a density 2 POI per km2
  3. 97592 km2, similar with the area or Hungary, have a density 3 POI per km2
  4. 68037 km2, similar with the area or Lithuania, have a density 4 POI per km2
  5. 48142 km2, similar with the area or Slovakia, have a density 5 POI per km2
  6. 35867 km2, similar with the area or Moldova, have a density 6 POI per km2

The total sum is 983412 km2, to put this in perspective, this means the area of Ukraine and Germany together. The rest of Europe has a density that is less then 1 POI per km2

data stats openstreetmap europe

What i learned.

  • Trying to so something as big as this is impossible in QGIS < 2.4
  • Except UK, Germany and neighboring county's, the rest of europe has good POI coverage only in big and medium cities
  • There is still no simple way to extract all the POI of a country or a continent ( amenity, shop, leisure, tourism )
  • There is no possible way to export this map in a interactive way, at least from the Qgis Plugins
    It would be possbile only country by country, if somebody with coding skills could make qgis2leaf work with rule-based colors

how a bad query can get you working for 2 days

Posted by baditaflorin on 3 July 2014 in English (English)

i was using this into the overpass api

[timeout:86400]; (way(34.759984,-12.216797,71.587596,36.298828)[shop];); out meta;

instead of

[timeout:86400]; (way(34.759984,-12.216797,71.587596,36.298828)[shop];); /added by auto repair/ (._;>;); /end of auto repair/ out meta;

OSM roads nodes density

Posted by baditaflorin on 1 July 2014 in English (English)

I made some visualizations of the nodes density of roads in OpenStreetMap

For Romania, there where 379.445 ways that generated over 4.7 milions points that where counted in a grid of over 31000 polygons , with area between 7.43 square kilometers to 8.08 square kilometers

Zoom Out - 14000x9900 pixels Alt text Middle zoom Alt text Close zoom Alt text

2048 OpenStreetMap style density map Alt text Glitchy OpenStreetMap density style map Alt text

All the images can be downloaded from my Dropbox public folder https://www.dropbox.com/sh/qpgi10q3b62s5c0/AADN0qUyY9x3bNsHQlD0NRB5a?lst

This would not be possible to made in old QGIS 2.2, 2,0 it would have taken 10 times more time. Big thanks for all the dev that are mentaining and improving QGIS

OpenStreetMap Romania

OSM Tools are good only if you are a programmer

Posted by baditaflorin on 28 May 2014 in English (English)

I would really love to just import and play with the data in the planet extract, or the data for Romania, and try to do some statistics, but it`s to impossible just to install and make the software work.

I i know a thing or 2 about linux, but it still to complicated.

I really believe we should try and have a more integrated way of exploring the data, with GUI Tools, not complicated as is now.

For the sake of simplicity, this for now can be accomplished by ready to go, VirtualBox or VMware image disk, where i should only put the extract that i get from geofabrik

https://github.com/MaZderMind/osm-history-renderer/blob/master/TUTORIAL.md

Preparing for first Bucharest OSM Mapping Party

Posted by baditaflorin on 29 April 2014 in English (English)

I was today on the field, to map this area http://mapcraft.nanodesu.ru/pie/407

The focus was on house-numbers. In total i added over 300 housenumbers, 18 pedestrian crossing, and 2 POI`s

Time spend :

2 Hours on the field, and 1 hour adding the data into JOSM

One of the roads was a oneway, that was not added on the map.

The final result can be seen here http://www.openstreetmap.org/#map=18/44.44068/26.14206

The mapping party will take place on the 17 and 18th of may

Fb Event https://www.facebook.com/events/560777397374381/

Location: București, Centrul Istoric, Sector 3, Bucharest, 030791, Romania

Just finished to import a city - Before and After pictures

Posted by baditaflorin on 6 March 2014 in English (English)

Just finished to import a city - before and after pictures

Alt text

Alt text

Alt text

More interactive images can be found on the OSM Romania Page

https://www.facebook.com/OsmRomania/posts/10202774066008863?stream_ref=10

Location: Strada Doctor Karl Diel, Jimbolia, Timiș, 305400, Romania

Just finished to import a city - Before and After pictures

Posted by baditaflorin on 16 February 2014 in English (English)

In total we imported over 5000 buildings, 3000 postal adresses and 2500 properties

Full list of pictures with slider

Before and After

Before and After

Vector Tiles used so i can get instant updates

OpenStreetMap Romania

infographic - State of the map Romania 2013

Posted by baditaflorin on 15 January 2014 in English (English)

Just publish the first edition of state of the map Romania.

The infographic is in romanian languages, so i will highlight some of the key stats - State of the map Romania 2013

194,859 kilometers of road in total Speed limit on roads

73,207 kilometers added in 2013 12,986 bridge`s

16,331 different street names

231,991 - number of buildings,

47 % of them added in 2013

27,237 buildings with names

44,608 buildings with type of building defined

Distribution of Point of Interest Distribution of Point of Interest

5,400 fixme TAG`s

Over 30.000 POI`s in total

869 locations with opening_hours tag

745 locations that provide information for access for persons with disability

OpenStreetMap Romania statistics

Posted by baditaflorin on 12 November 2013 in English (English)

If somebody is from Romania, i just want to let them know that i did a facebook page for OSM https://www.facebook.com/OsmRomania

And because i don`t know what to post when the local autorities are not so great at allowing us to import data into OSM (except Targu Frumos i started making stats about the evolution of OSM in Romania from 2008 until now.

POI evolution per year Link POI evolution per year

Percent of POI added in 2013 / county from total POI Percent of POI added in 2013 / county from total POI

Number of place_of_worship in Romania/ county Number of place_of_worship in Romania/ county

Number and location of place_of_worship in each county Number and location of place_of_worship in each county

What should i add on a facebook page about a country ? i want to make people start adding to the map, but i don`t have yet a idea how to help with this, so until that, i do what i know best (sort of :P )

Openstreetmap.org on steroids

Posted by baditaflorin on 20 May 2012 in English (English)

openstreetmap.org is and will remain a demonstration map, not a real website, an end user mapping tool, so this is why 90 % more people use and will comtinue to use google maps

And i want to change that.

So let`s build an openstreetmap.org on steroids.

What this website has to contain :

  1. Clickable POI`s Simple and Straightforward . You see a place, you click on it, you find information about it. And you have the possibility to send a link to the place, etc.

  2. Link to search results. This simple yet non-existing feature. I want to give a link to somebody to 120 Avenue Street . Or to the Museum. I don`t want to give him a permanent link that shows the map, i want to give him the exact location that we will find, without telling him, go to osm.org and search for 120 Avenue Street and you will find it. https://trac.openstreetmap.org/ticket/4408

  3. Render all the shops. rigth now on mapnik more than half the POIs are not rendered, including dentist shops, amenity=veterinary ,shop=electronics , shop=kiosk Those 4 tags alone represent 35000 new POIs that could be shown on the map https://trac.openstreetmap.org/ticket/4403

  4. Opening_hours filter. Opening_hours is a great tool, very usefull when you are in a new town, city, etc. Imagine yourself at 3 AM, wanting to find a non-stop shop to buy cigarettes. Or a beer, juice, etc.

The same example is useful for a tourist, in a foreign country, on a Sunday, and wants to see a museum. But at least in my country, more then half the museums are closed on sunday. And Some of them are open only 3 days a week. And only for 6 hours.

Sub task proposition : Alert me when a place opens. Mail alert when amenity X is Open.

  1. The possibility to add a Pin to the map, and send, share this pin. If i want to send to somebody a link to the website, for a meeting point, etc i will have to have a simple way to create o pin point , where we will meet.

  2. Routing

  3. You are not able to search GPS coordinates in OSM website. Basic GPS coordinates. https://trac.openstreetmap.org/ticket/4429

Feel free to continue the list.

Location: București, Centrul Istoric, Sector 3, Bucharest, 030791, Romania
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