The Fingal task (no. 20) was yet another task that had been begun in 2020, but had been de-activated in favour of other tasks in November of 2020. It was re-activated on November 9th 2023 and the mapping finished on December 18th of 2023.

Contributors

There were 14 total contributors, 13 mappers and 6 validators (as of 2023-12-26). They were

user nametasks mappedtasks validated
b-unicycling12305
eireidium2137
Jonako480
ibanez047
DeBigC1311
jonnymccullagh125
GovernorKeagan115
tshedy80
Smef0950
thommcg50
tadcan20
Schiefkopfschnecke10
HeikkiVesanto10
NickMillerUK10
contributors by numbers

Building numbers

building typenumber 2007number 30/11/2019
(start of buildings project)
number 20/11/2023number 15/12/2023
2957,30092,700110,000
yes26,50014,000
house021,50047,80063,200
semidetached_house05566,70015,900
detached0189743,700
terrace1264338316
residential0765796731
apartments13697341,100
garage0586411,200
shed01,9004,8005,300
farm20357
farm_auxiliary0146801,300
public171014
retail6124330411
commercial0174261266
school4125182205
church0416566
college08810
hospital0263840
hangar001115
ruins3580
demolished:building89120
1 Even though Dublin Airport is in the task area. 12 hangars had been mapped between 2013 and 2015 which were seemingly retagged.
2 For simplicity’s sake, often mapped as building=house or building=detached.

Mapping saturation

The OSM quality analysis tab by HeiGit allows to analyse the saturation of certain building types and amenities in a certain area and compares it with the mapping status. Two examples for Fingal:

Mapping saturation for hospitals

Mapping saturation for hospitals in Fingal, according to Heigit

Mapping saturation for schools

Mapping saturation for schools in Fingal, according to Heigit

Observations

The reason why it only took just over a month to finish the task (with b-unicycling dedicating 10 days of that to a private Kilkenny project) was that many buildings had been mapped independent of the task, likely by local mappers, possibly in Swords…maybe? It also helped that Lusk had had its own task earlier this year with recent enough imagery and in-person visits for mapillary capturing.

Very positive is the good coverage of house numbers, there were/ are even address interpolations for areas where there still are no buildings available on aerial imagery. Well done!

addr tagnumber 18/12/2023
addr:housenumber35,100
addr:housename853
addr:flat0
addr:street43,700
addr:city8,100
addr:postcode846

Something that seemed strange in Fingal is someone having mapped many buildings with roof:shape=pitched (2,800 cases by 18/12/2023) which is not a documented tag. The preferred and documented alternatives are either roof:shape=gabled or roof:shape=hipped. Should we have a MapRoulette task for that?

Archaeology

Two hitherto unrecorded archaeological sites were discovered on the newish Bing imagery in the last month, one in the townland of Corballis, one in the townland of Broghan. They have since been added to the records of the National Monuments Service, but have not made their way onto the Historic Environment Viewer.

Enclosure in Broghan; the other crop marks were dismissed by the NMS

Thatched buildings

Several buildings and buildings part with roof:material=thatch were identified in person, on street-level imagery and Bing and mapped accordingly. The graphic below shows the locations with the blue dots representing buildings on the National Inventory for Architectural Heritage, mapped with ref:IE:niah.


0 Comments

Leave a Reply

Avatar placeholder

Your email address will not be published. Required fields are marked *