Diary Entries in English

Recent diary entries

Posted by c tito young on 10 March 2021 in English. Last updated on 17 April 2021.

A geoglyph of an enormous serpent, (300m long x 10m wide) oriented east going west appears in a side view to slither across an moderate valley floor. Complete with sharp looking teeth, a nose horn and an outstretched body. It appears to have an engorged throat suggesting it just had a meal, but its exact meaning is unclear. The image of the snake has a ornate bumps on its head.

14°53′14″S, 74°53′22″W -14.8871094, -74.8895354 Vista Alegre, Province of Nasca, Ica, Peru

Location: Vista Alegre, Province of Nasca, Ica, Peru
Posted by c tito young on 9 March 2021 in English. Last updated on 17 April 2021.

A geoglyph of a 130m long x 10m wide of what appears to look like a Moray Eel swimming east to west on moderate steep terrain. Side view includes moray eel in motion. There seems to also be a second Geoglyph under the eel about 25m away.

15°17′33″S, 74°32′42″W -15.2923908, -74.5451334 Acarí, Province of Caravelí, Arequipa, Peru

Location: Acarí, Province of Caravelí, Arequipa, Peru

During most of the time I’ve been mapping in OpenStreetMap I’ve concentrated mainly on mapping town and city centres in the UK in high levels of detail. I try and map all the shops and buildings on the streets I’ve surveyed by taking photos of the streets and buildings. In the last few years I extended this to start adding the ‘Simple 3D buildings’ tags (osm.wiki/Simple_3D_Buildings) to buildings, enabling additional details to be recorded about buildings and for them to be rendered in 3D.

Recently I finished mapping Hertford town centre in detail including 3D tags and this can be seen on OSM (in 2D) at osm.org/#map=18/51.79638/-0.07740, and in various 3D renderings such as F4 Map (https://demo.f4map.com/#lat=51.7962036&lon=-0.0795818&zoom=18) and OSM Buildings (https://osmbuildings.org/?lat=51.79617&lon=-0.07938&zoom=17.8&tilt=30). Many other renderings are available – see osm.wiki/wiki/3D.

Other places where I’ve done much 3D mapping in the UK have included Alton, Eastbourne, Dartford, Llandudno, Conwy, Leytonstone, Bridport, between Strood and Chatham, and bits of East London around Limehouse and Hackney. I also did a bit of 3D mapping in Santiago de Compostela and Madrid in Spain. The area though where I’ve done the most 3D mapping has been in central London. London I’m sure has the largest number of 3D mapped buildings in the UK with a few different mappers doing some incredible 3D mapping both in terms of the number of buildings mapped and the level of detail on several complex buildings. I’ve personally though tended to do mainly simpler buildings, and my mapping has been scattered around various different areas I’ve visited.

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When the OSMF board started their survey i posted here some critical commentary on the design of the survey. Now that the results have been published (and the board should be commended for doing so in a fairly comprehensive fashion) there has been analysis and interpretations presented from various sides. I also already made a few comments as part of my report from the advisory board and although i don’t want to do any more elaborate numbers processing i wanted to share my overall impressions of the survey taking into account the responses as well. As before with my comments on the questions and also in contrast to most of the other analysis that has been presented so far this is focusing less on technical analysis and more of overall qualitative considerations and methodological critique.

Retrospective questions (F1-F5)

The first five questions of the survey were asking for retrospective approval or disapproval on some specific decisions of the OSMF board. I already commented on the issues of these questions in detail while the survey was running. My primary impression from the results on these is that the approval in the resposes is actually weaker than i anticipated considering the leading character and selection of the questions. In other words: Despite the questions specifically not being of a nature that is likely to evoke strong negative reactions the answers show a remarkably broad spectrum of views.

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Posted by Øukasz on 8 March 2021 in English. Last updated on 9 March 2021.

I have just read in the OSM weekly that Michal has published analysis of the OSMF 2021 survey. I thank him, and others in the OSM community for the time and work spent on this.

Re-visualising the responses

One thing that drew my attention, is the visualisation of the 5 “sentiment” questions from the survey. The questions had Likert-style response options, where the respondents could either disagree or agree with the statement. There was also a neutral option in the middle. Such data are better visualised using a diverging colour palette. Since Michal kindly released all the files through github, I could recreate the maps using what is, in my opinion, a more suitable visualisation.

1: Code Of Conduct

2: Fundraising

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Posted by SimonPoole on 8 March 2021 in English.

The first beta release of Vespucci 15.2 has just become available on googles play store, alternatively you can download it from releases in Vespucci repository.

While it would always be nice if as many users as possible could test this as fast as possible, this year due to events outside of our control (bintray demise, mapillary sunsetting its current API at extremely short notice, not to mention the usual multiple man weeks of work due to googles requirements), we need to get this release out of the way asap, any help with that would be appreciated.

Dedicated address mode and address handling improvements

When we introduced the “simple mode” in Vespucci 12 in 2019 there was no way to directly add address nodes without switching to the old element creation mode via long press (you could however add a node and then predict the address in the property editor). To make this a bit easier 15.2 introduces a dedicated “Address” mode that switches the “plus”-button to allow adding

  • an address node (including automatically adding an entrance tag if the node is on a building outline)
  • an address interpolation
  • a map note

Further improvements include support for addr:block, addr:conscriptionnumber and addr:block_number in the address tags preference, and the use of information from geocontext project for region specific default address tags.

Support mode specific launcher shortcuts

After adding a short cut for the “help” system in 15.1, we’ve added further short cuts for specific modes: Indoor, Tag-only and Address.

In launchers that support the functionality short cuts can be accessed by a long press on the app icon, and dragged to create short cut links for direct access.

Address mode demo

Support merging closed ways/polygons

Basic support for merging two closed ways/polygons has been added to the multi-select mode. If their are no common nodes, or if the function dedects inner rings this will create a multi-polygon, otherwise a single closed way.

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Posted by c tito young on 8 March 2021 in English. Last updated on 17 April 2021.

Several 25m wide x 30m long etched geoglyph heads lay side by side on two separate hillsides separated by a moderately sloped valley. Most the heads are oriented north (forehead) to south (chin). Some of the heads, when side by side, will share common edges and lines. Additionally a proportion of heads appear anatomically correct while others appear highly abstract. It is possible that from some perspectives some of the heads might appear anatomically correct.

14°40′32″S, 75°12′60″W -14.6755618, -75.2165580 Changuillo, Province of Nasca, Ica, Peru

Location: La Vinita, San Javier, Changuillo, Province of Nasca, Ica, Peru

Starting January 2021, Enedis and OpenStreetMap France, OSMF French local chapter, entered together into a 3 years term partnership. It’s a significant step forward for data exchange and collaboration between OpenStreetMap community and utilities companies. Enedis started to publish some of its data under an open data Licence back in 2015 and now wished to ally to a well-known project like OSM to encourage crowdsourcing in a virtuous way.

Enedis operates the public electricity distribution network of 95% of Metropolitan France. It was the first European distribution system operator to get involved in open data by sharing useful assets for environmental transition and public service. Sharing its network cartography is particularly useful for OSM community since 2018.

This partnership is part of Enedis 2020-2025 Industrial strategy and as well in OSM France strategic roadmap to improve OSM usage and institutional contribution.

Partnership as a win-win solution

According to this partnership terms and conditions, Enedis agreed to provide more open data related to its operated infrastructure and aerial imagery at 5-cm resolution scale produced on a part of Metropolitan France over surroundings of power distribution grid. These pieces of imagery will be dedicated to OSM contribution only and will be usable as background in most of existing editors (JOSM, iD, …). This will serve common business topics shared by both Enedis and OSM France such as * Overhead power poles and lines mapping * Comprehensive surface power street cabinets inventory * Up to 4 other topics could be defined during this 3-years term.

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Location: La Pêcherie, Bouquetraud, Franchesse, Moulins, Allier, Auvergne-Rhône-Alpes, Metropolitan France, 03160, France
Posted by Leigh Dodds on 6 March 2021 in English.

This is a short diary entry to announce the publication of a project I’ve been working on for the last month or so called OSM Queries.

It’s a website containing a small, but growing, collection of useful Overpass API queries. This includes a 26 part tutorial that covers most of the core features of the language and a syntax reference.

The website is generated using an open source tool that can generate HTML pages from a collection of Overpass queries.

For more details, read my blog post announcing the project.

Posted by c tito young on 5 March 2021 in English. Last updated on 17 April 2021.

A geoglyph of a figure 60m long x 40m wide oriented east (head) to west (feet) on moderately sloped land is depicted as appear in pursuit by an alligator. The etching of the alligator, just 15m away is drawn moving in the same direction and path as of the man. It is unclear to determine if the man gets away or not from the alligator. The man appears to be doing a crawl stroke.

15°16′58″S, 74°32′23″W -15.2827612, -74.5398436 Acarí, Province of Caravelí, Arequipa, Peru

Location: Acarí, Province of Caravelí, Arequipa, Peru

Last 20 February, I hosted an OpenStreetMap workshop and Mapathon with the local YouthMappers chapters in the Philippines. It was attended by the members and volunteers from UP Resilience Institute Youth Mappers, FEU - Alabang ACM Chapter, and JPCS - National University. Together, we mapped San Ignacio, Tarlac. This was a great avenue for the students to meet and get together and help the local government of San Ignacio and support MapBeks’ initiative #UNMAPPED2021

Taken 20 February, PH YouthMappers unite to map San Ignacia, Tarlac

From this activity, we were able to add and validate a total of 2,146 buildings. We are hoping to add more and validate more data in the coming months!

I am also happy to share with you that University of Makati - Computer Society is the 5th local YouthMappers chapter in the Philippines! I am aiming to recruit more organizations to join the OSM community and YouthMappers network from Visayas and Mindanao islands in PH.

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Posted by Rabin Ojha on 2 March 2021 in English. Last updated on 14 September 2022.

In 2020, I made at least one edit a day for 332 days. You can see the screenshot of my HDYC profile on March 2, 2021. During the year, I mostly mapped buildings, roads, and landuse around Nepal and Afghanistan.

I have an ambitious goal of making at least one edit per day in 2021. Let’s see how far can I go!!

Location: Panipokhari, Kathmandu-03, Kathmandu Metropolitan City, Kathmandu, Bagamati Province, 10378, Nepal
Posted by c tito young on 2 March 2021 in English. Last updated on 17 April 2021.

Shown are two straight geoglyph lines in perpendicular form a geoglyph 80m (oriented east / west) and 50m (oriented north / south) a fractions of a degree greater than a perfect right angle. Rarely seen are geoglyph samples of Nazca lines display anything resembling right angles. These two line proves to be obtuse in geometry measuring 90.9+/- degrees. Within the perpendicular area of those two lines are two other lines that resemble the letter V. They are significantly smaller in size being about 20m max all drawn on fairly flat land.

14°39′23″S, 75°18′3″W -14.6563906, -75.3007687 Changuillo, Province of Nasca, Ica, Peru

Location: Cabildo, Changuillo, Province of Nasca, Ica, Peru

Bing Aerial Refresh

In fall of last year the Bing aerial imagery of Springfield, IL was refreshed, finally fixing a huge north/south tear down the middle of the city that had made adding accurate geometry within it nearly impossible. The new imagery is from that summer and is absolutely fantastic. It even covers outlying towns like Chatham, Rochester, Riverton, and Spaulding. I’ve been hard at work fixing alignment problems and adding new roads and buildings that I had heard about but hadn’t had a chance to survey. This and the pandemic are largely responsible for taking me over 270 mapping days last year, a personal best.

Accessibility

I’m not really hardcore about adding individual parking spaces, but when I saw the iD preset for accessible parking spaces I knew it was something I could and should add whenever possible. As a result, over 5,400 accessible parking spaces in the Springfield metro area are now mapped, accounting for more than half of those mapped in the United States as of this post.

I’ve been pretty good about denoting accessible crosswalks, even those with tactile pavement, but I definitely need to do another pass through some neighborhoods now that the imagery has been updated. The city does have a rather robust sidewalk/crosswalk improvement program and there are probably dozens of walkways that have been upgraded since I last mapped them all. Additionally, I’d like to be more fastidious about adding entrances to buildings/businesses so that distances can be determined between them and their associated accessible parking spaces.

Roadway Detail

For the longest time I was hesitant to delve into adding lane information for segments of roads, because… well, I just didn’t like the idea of splitting roads into a bunch of different segments. I thought it would make it more tedious to update speed limits and things like that going forward.

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