katpatuka's Diary

Recent diary entries

Update of Fengtinghe Reservoir in Guangxi, PRC

Posted by katpatuka on 21 July 2020 in English (English).

I’ve updated Fengtinghe Reservoir (凤亭河水库) today with the help of josm’s scanaerial plugin using ESRI imagery and additionally added parts manually where scanaerial wasn’t detailed enough.

I had created the reservoir relation about 10 years ago using Lakewalker plugin (now deprecated) with Landsat imagery.

Looks much more realistic now ;)

Location: Liangqing District, Nanning, Guangxi, 530201, China

Six months busy in Sichuan

Posted by katpatuka on 26 June 2020 in English (English).

I think I was really 6 months busy in Sichuan adding missing towns, townships and subdistricts with their English name and wikipedia/wikidata tags. Not only on osm but also on zhwiki and wikidata I added lots of stuff…

China’s administrative infrastructure is crazy! In urban regions a lot changed in December 2019: townships were upgraded to towns and towns in subdistricts. Some counties became districts or county-level cities. Sometimes places get a new name even. And that wasn’t necessarily immediately reflected in zhwiki because zhwiki is still blocked in China! So you are always playing catch-up…

China is developing very fast and the biggest problem for us mappers is: missing up-to-date imagery ! Sometimes I had to use 10 year old imagery from one provider because imagery from other providers were cloud covered. No usable GPS traces - only maybe for main trunk or primary roads. At least there are more Chinese users now editing on OSM…

I stopped checking Chengdu urban centre - too tiring - and I hate big cities ;)

Location: Dachuan, Lushan County, Ya'an City, Sichuan, China

Afghanistan district boundaries added in one month

Posted by katpatuka on 28 September 2016 in English (English).

it took a month to add 99 percent of all district boundaries of Afghanistan. Only problem left is the fate of Darwaz district which I couldn’t decide: says it got split into Maimay, Nusay and Shekay District but other sources name a Darwaz and Darwaz-e-Balla District.

Someone else can now make nice svg-files for use with wikipedia articles!

Location: Yakawlang, Bamyan, Afghanistan


Posted by katpatuka on 15 April 2012 in Chinese (中文).


Location: 三花石乡, 西乡县, 汉中市, 陕西省, 中国

Simav havzası güncellendi

Posted by katpatuka on 15 November 2010 in Turkish (Türkçe).

Simav ve Gönen havzası güncellendi; Koca Çayı, Emet Çayı v.b. eklendi...
- hangi yerlerde Simav Çayı veya Susurluk Çayı diyorlar bilmem; alt_name=Susurluk Çayı; name=Simav Çayı kullandım artık...

il sınırları haritaları

Posted by katpatuka on 3 November 2010 in Turkish (Türkçe).

OSM'de geri kaldığı için son günlerde internette il ve ilçe sınır haritaları arıyorum - bir bok çıkmıyor! Türkiye CBS konusunda baya geride kalıyor sanarım! Resmi dairelerde bile güzel veri bulunmaz! Haritacılık halen askeri parmak altında kaldığı için açık kaynak kodlu doysaları zaten bulunmaz; ne .shp dosyalar ne de AutoCAD, sadece dandırık dündürük küçük çözünürlükte olan WGS84 dayalı olmayan .jpg ve .gif dosyaları kaymakamlık, özel idare ya da belediye sitelerinde buldum...

Tek İstanbul Rehber Haritası iyi yapılmış durumda fakat o veriler hayatta vermezler...

Türkiye openstreetmap'deki olan imkanları henüz pek tanımıyor, gözü açılmadı - anlatamam yav...!

Location: Çağlayan, Adapazarı, Sakarya, Marmara Bölgesi, Türkiye

worked on Wu Jiang (乌江) river basin (Yangtze)

Posted by katpatuka on 19 October 2010 in English (English).

Worked on rivers of Wu Jiang (乌江) basin; made new Wujiangdu (乌江渡水库) and Dongfeng (东风水库) reservoirs with josm's lakewalker; added Maotiao (猫跳河), Qingshui (清水江), Xiang (湘江) and Hongdu (洪渡河) rivers... in near future I think I start to learn chinese ;-)

akarsu havzaları

Posted by katpatuka on 17 October 2010 in Turkish (Türkçe). Last updated on 19 October 2010.

son üç beş gün Türkiye'deki ırmaklar üzerinde biraz çalıştım -

internette ırmakların kollarının adları konusunda fazla bilgi ve harita bulunmuyor, vikipedi de çok zayıf kalıyor; tek bulduğum ilginç site EİE, Hidrolojik Çalışmalar ve Akarsu Havzaları. Bazı haritaları vikipedi'de ekledim...

added ~3000km highways in Cameroon, Nigeria, Benin and Mali

Posted by katpatuka on 4 October 2010 in English (English).

added some 3000km highways in Cameroon, Nigeria, Benin and Mali from an interesting gpx-track at Only small parts had already existed on that route - partly traced from landsat. No documentation to be found about the road network of Nigeria... I wonder where wikipedia articles like A123 highway (Nigeria) get there information from...

rivers of Gabon, Congo-Brazzaville and Cameroon

Posted by katpatuka on 27 September 2010 in English (English).

I don't know how many km rivers I added the last few days in Gabon, Congo-Brazzaville and Cameroon! (... and in other well-mapped corners of world un-emplyed micro-mappers start to map benches and gully covers...!)

Wikipedia is way behind in river decriptions too: no coordinates of river mouths, sometimes no names of affluents and tributaries (but the really huge main rivers)... Best sources for river names is still the UN (for example Lots to do in Africa - I don't use potlatch for mapping there; josm with landsat has much higher resolution.

And - besides rivers - (nearly) no gpx-tracks to be found in the net! (...was just lucky with finding really good tracks of N2 road(s) in Gabon, Congo and Cameroon ;-)

Now look at some of these never heard river names:
Ogooué basin: Offoué, Ngounié, Mpassa, Ivindo,...
Ivindo basin: Djoua, Liboumba, Mvoung,...
Alima basin: Dziélé, Lékéti,...
Congo basin: Djoué, Sangha, Likouala, Léfini,...
Likouala basin: Mambili, Kouyou, Lékoli, Lengoue,...

...sort of project of the month for me... ;-)

TAZARA & Pride of Africa railway + Limpopo

Posted by katpatuka on 20 September 2010 in German (Deutsch). Last updated on 15 November 2010.

...wie's der zufall so will, hat mich irgendein gpx-track wieder mal nach südafrika verschlagen; deswegen konnte ich die TAZARA Railway vervollständigen und einen Teil der "Pride of Africa" railway ausbessern/ergänzen - zur zeit bastele ich an fehlenden Limpopo-teilstücken in BW und ZA...

additions to riverbank of Amur and Songhua

Posted by katpatuka on 29 August 2010 in English (English).

worked a lot on riverbanks of Amur and its tributary Songhua recently

rivers in China

Posted by katpatuka on 3 February 2010 in English (English).

...mapping rivers in China is really exiting: you stumble about unmapped rivers all the time! You try to find a bigger city along the river and look it up in the english wikipedia just to find a location stub! No river mentioned there. Even the wikipedia is way behind! Then you start to google "thatcityname river" but the only thing you learn is that there are no good sources concerning location data in China! Luckily years ago I occasionally bought a map on the fleamarket: China Far East, Hallwag, 1989/1990 - but it's 1:6.000.000 and the names are odd. At least it gives you an idea which river basin it may be...

borders between Nakhchivan - Armenia - Azerbaijan added

Posted by katpatuka on 15 December 2009 in English (English).

Don't know why but the borders between Nakhchivan - Armenia - Azerbaijan were missing. I added them using source from The exclaves and enclaves of AZ and AM are still missing (were not in the sources)...

From wikipedia:
In Armenia, there exist three Azerbaijani exclaves. Barxudarli (41°00′N 45°13′E) and Yuxari Askipara (41°04′N 45°01′E) are in north-eastern Armenia. The other one, Karki (39°48′N 44°58′E), is located north of the region of Nakhchivan (which is a detached fragment of Azerbaijan stuck between Armenia, Iran and Turkey). Reciprocally, there exists one Armenian exclave, a village called Artsvashen in north-western Azerbaijan (40°38′N 45°31′E).

Location: Gedebey District, Qazakh-Tovuz, Azerbaijan

still so many unmapped islands in Indonesia and Oceania...

Posted by katpatuka on 3 November 2009 in English (English).

There are still so many unmapped islands in Indonesia - did PGS miss them? I managed to add the group of Sangir Islands ( tracing landsat images using josm but yesterday I again found Togian Islands being unmapped...

Location: Awo, Tojo Una-Una Regency, Central Sulawesi, Indonesia

some Heilongjiang districts added...

Posted by katpatuka on 17 August 2009 in English (English).

added some Heilongjiang districts from shapefiles (source:
黑龙江省 / Heilongjiang

鹤岗 / Hegang
佳木 / Jiamusi
大兴安岭地区 / Daxing'anling
七台河 / Qitaihe
双鸭山市 / Shuangyashan and
鸡西市 / Jixi

relation only containing relations does not get rendered

Posted by katpatuka on 3 July 2009 in English (English).

As I'm working on rivers and their basins I thought I might try to just add child relations to a parent relation - but it did not render!

Take Lena river,
1. make a relation for the whole length of the river
2. find some tributaries (Vitim, Kirenga, Olyokma) and repeat step 1
3. make a river basin relation and add relations Lena, Vitim, Kirenga, Olyokma
4. test it

It did not render. It only renders when adding all single ways of all rivers (1).


Чулым (Chulym) river relation added

Posted by katpatuka on 30 June 2009 in English (English).

Finished the Ob tributary Chulym/Чулым osm-relation, made a screenshot using OSM Relation Analyzer, uploaded it to wikipedia commons and updated Russian wikipedia [[Чулым (приток Оби)]] - another OpenStreetmap Map on wikipedia ;-)

Location: Копьёвский сельсовет, Ordzhonikidzevsky Rayon, Republic of Khakassia, Siberian Federal District, Russia

relation for Lanxin railway (Lanzhou-Xinjiang) added

Posted by katpatuka on 26 June 2009 in English (English).

Added relation for Lanxin railway from Lanzhou to the border of Kazakhstan.

Now I'd like to have a nice topo background a la google terrain showing the rendered rail and upload it to wikipedia - but the result of doesn't looks very promising if you zoom out and choose CycleMap to display the map...

Such a osm-service is still missing and would be very good: something which would be worth to upload to wikipedia. If relations have a smaller diameter the CycleMap can produce some nice looking map (if the region is covered) but for more than 1000 km distance there is nothing appropriate...

Added boundaries of Hulunbuir division of Inner Mongolia

Posted by katpatuka on 21 June 2009 in English (English).

I've added boundaries of Hulunbuir division of Inner Mongolia using the shape file at I'm not quite sure about some of the districts though... hopefully a chinese osm'er will have a look ;-)


Location: Fendou, Hulunbuir, Inner Mongolia, 021000, China