Update: Check out my comment below about the state of the art being greatly improved!

The idea

After finishing my first address import I was looking for a good view of “where else needs addresses”. One trick that always pays dividends for me is to look at distributions of ratios of various quantities. In particular, I presumed there should be a pretty smooth distribution to the ratio of number of addresses vs number of buildings in any given area.

Building it

• Get the data from Geofabrik state data dumps (US regions are too big for the tools)
• Use osmconvert to flatten out ways and relations. Something like:

osmconvert alabama-latest.osm.pbf -o=alabama-nodes.csv --max-objects=50000000 --all-to-nodes --csv="@lat @lon addr:housenumber building"

• A bit of C# to do the binning (I’m sure QGIS and other tools are great for this but you use what you know)
• Tableau Public for the viz generation

The results

… See full entry

Many of the features we had to deal with in the Sq___ renaming were small streams and creeks. For some reason, Sq___ Creek seemed to be a very popular name. In most cases, the creeks weren’t present on OSM, and as part of the renaming, we decided to add missing features with the new names so that future mappers wouldn’t unknowingly add the features with the old Sq___ names. So, we had to map a lot of small creeks.

One of the challenges with mapping named waterways is identifying the full extent of the waterway. Where is the mouth of the waterway? Where is the source? Of the many branches upstream from the mouth, which branch is the identified course?

If you’re just working with GNIS, the GNIS data has two or sometimes three sets of coordinates for waterway features. The first coordinate is the mouth. If there is a second coordinate, it falls somewhere in the middle of the waterway. The last coordinate is the source.

From there, you can use topo and aerial maps to trace the course of the waterway by hand.

Alternatively, you can download the local data file from the National Hydrography Dataset, find the waterway you want, merge it into an OSM layer, and clean it up before uploading it. Here’s how that works:

… See full entry

… See full entry

The celebrations have been over for more than a week, yet the Pista ng Mapa X State of the Map Asia 2022 spirit still abound!

The first international conference I attended just happened so fast. I still remember the time that I was accepted as one of the local travel grantee of this international conference in Albay, Legazpi. One thing that came into my mind for attending the conference is that I will be seeing the beauty of great Mt. Mayon but I was wrong, It was the experiences and learnings that will be my souvenir once I got home.

I had been part of the Viscan YouthMappers Organization in Visayas State University in Baybay City, Leyte, Philippines. Since I joined the organization months ago, I started contributing in Open Street Map to map places that needed help on disaster response and planning on a certain area. Through this conference, I was able to share my hardwork and perseverance to other people I just met.

… See full entry

I understand that for most members of this community this is offensively primitive, but I have spent an hour ploughing through all APIs, so until https://github.com/mocnik-science/osm-python-tools/issues/70 is fixed perhaps it helps somebody:

# From URL (e.g., "https://www.openstreetmap.org/way/30722274#map=14/49.2925/38.1815")
# to geo-URI of the center of the object: geo:49.2953098,38.1827257

import os.path
import sys
import urllib.parse
from OSMPythonTools.cachingStrategy import CachingStrategy, JSON
from OSMPythonTools.api import Api
from shapely.geometry import shape

CachingStrategy.use(JSON, cacheDir=os.path.expanduser("~/.cache/osm"))

api = Api()

parsed_url = urllib.parse.urlparse(sys.argv[1])
way = api.query(parsed_url.path)
geom = shape(way.geometry())
print(f"geo:{geom.centroid.y:.7f},{geom.centroid.x:.7f}")

Complete program is now hosted at https://sr.ht/~mcepl/osm_where/

OSM beginner!!!!

Driving around Dyfi Valley and on the A470 testing Actia (UK)’s Intelligent Speed Assistance application I have noticed a few inconsistencies in the location of speed limits.

Insert Wikidata into POI in OsmAnd

Inserir Wikidata em POI no OsmAnd

Brief tutorial on how to insert Wiki (Wikipedia/Wikidata) into Points of Interest (POI) in OsmAnd application with OpenStreetMap map. By Túllio M. Franca - UMBRAOSM

Breve tutorial de como inserir Wiki (Wikipédia/Wikidata) em Pontos de Interesse (POI) no aplicativo OsmAnd com mapa OpenStreetMap. Por Túllio M. Franca - UMBRAOSM

https://pt.slideshare.net/umbraosm/inserir-wikidata-em-poi-no-osmand-254777845

Tulio França https://www.instagram.com/ondecetaa/

UMBRAOSM - União dos Mapeadores Brasileiros do Openstreetmap www.umbraosm.com.br

8Hours on Air 8Hours on Land

Inaugural State Of The Map Conference Nigeria 2022

The thing that made me attend this meeting was to share my experience from a big project that took place here in our country in Tanzania, which was related to the collection of Mills Information to check the level of food and nutrition. It was a Community-oriented project that involved 1091 community members and 1091 motorcycle riders.

TANZANIA NATIONWIDE MILLS CENSUS REPORT, 2022

Apart from sharing our experience, the other purpose of attending the conference was to get different backgrounds from different countries and see what they were doing and if we could do it in our country.

… See full entry

Community Mapping - OSM

Mapeamento de Comunidades - OSM

Mapeamento de Comunidades - OSM Presentation of the Community Mapping Project in Brazil on OpenSreetMap integrated with other free platforms such as OpenAerialMap, Mapillary and Wiki as well as the use of StreetComplete. By Túllio M. Franca - UMBRAOSM

Apresentação do Projeto de mapeamento de comunidades no Brasil no OpenSreetMap integrado a outras plataformas livres como OpenAerialMap, Mapillary e Wiki bem como uso do StreetComplete. Por Túllio M. Franca - UMBRAOSM

https://pt.slideshare.net/umbraosm/mapeamento-de-comunidades-osm

Tulio França https://www.instagram.com/ondecetaa/

UMBRAOSM - União dos Mapeadores Brasileiros do Openstreetmap www.umbraosm.com.br

Just discovered this user 4 days ago from this note. This user is not a vandal or anything, a user has no edits yet instead of deciding that it already existed in OpenStreetMap, but it isn’t lived in OpenStreetMap. It existed on other maps likely than Google Maps.

Whether you’ve just completed school or you graduated decades ago, there are likely many things you don’t know about the extraordinary planet on which we live.

For instance: Were you aware that the Pacific Ocean is shrinking every year? Or that the world includes a sea without coasts? Or that Alaska isn’t just the westernmost state in the U.S., but the easternmost as well?

The third rock from the sun is much more complex than you may think — as evidenced by these alternative facts about geography.

Continents shift at about the same rate as your fingernails grow. Mt. … Ninety percent of Earth’s population lives in the Northern Hemisphere. 4. California has more people than all of Canada. … Australia is wider than the moon.

In this area there is no home, although the map marks there is.

the plethora of the edits that am more focused on the time that am writing this exact note are agrotic Rural Roads between the Ayia Napa - Sotira - Paralimni borders, inside the Forest of Agios Antonios and several places near. Η πληθώρα των εξεργασιών που επικεντρώνομε αυτή την στιγμή είναι οι αγροτικοί δρόμοι στα δημοτικά σύνορα της Αγίας Νάπα - Σωτήρας - Παραλιμνίου εντός του Δάσους του Αγίου Αντώνιου και στις τριγύρω περιοχες

• Exact (“micro”) mapping

Introduction

My name is Pragya Pant. I am a geomatics engineer from Nepal.

My OSM Journey

I started mapping in OSM from year 2020. This journey started with mapping just for fun and utilization of my free time. After mapping for few months I started to realize the use and importance of the data I created and how it was impacting the lives of people. Now that I know the value of my contribution I map for a reason.

Interest for mapping

Being a geomatics engineer I have always been fond of mapping. I have been mapping using GIS software and have a knowledge of remote sensing and photogrammetry. I love mapping through field visits interacting to communities so that I can impact them positively. Getting OSM as an open platform I feel lucky to contribute where I use my skills of engineering to impact the communities of any part of the world through remote mapping.

Experience

From the point I realized the importance of OSM data I started mapping for projects that are running in Nepal. My experience in various OSM projects are as follows:

1. OSM Mapping and Data Validation of Kailali/Kanchanpur/Doti/Dadeldhura/Rasuwa Districts
2. 15 days 15 mapping campaign for mapping unmapped trials and settlements in the remote Dolpa district of Nepal organized by Youth Mappers
3. Digitized buildings of Kathmandu Metropolitan City remotely using Open Street Map (OSM)
4. Remotely mapped building footprints of different cities of Afghanistan
5. Field participant of HOT Microgrant project- “Mapping Chepang community of Nepal”
6. Participant in women leadership initiative “She Leads and She Inspires: Women in Leadership Program”- Asia-Pacific Region
7. HOT Data Quality Intern for 2022

… See full entry

My 5 years celebration with OpenStreetMap

Down My (OpenStreetMap) Memory lane…

I was just a Geo-informatics and Surveying Polytechnic student at Akanu Ibiam Federal Polytechnic Unwana, Ebonyi State. We used to have practical sessions using Surveying instruments but with time I realized that we are doing the same thing over and over without any data being stored. We would just acquire, use and trash! I then decided to form a team of 4 with my fellow students who I convinced of my vision – we would collect the data, save it and be updating it later to make data available to all and easy to access. We set objectives to achieving our aim and being close with my Head of Department and my lecturers give us access to instruments at any time. We decided to pick every existing feature within the school - it was a difficult experience for months but my passion for data kept me going. At the end of the struggle, we had the data and I then created a unique map for my school which is currently serving as the base map for the school even up to this day. The result got applauded by the department as I made it easy for anyone who may need data for a particular section of the school they can get it easily, saving time and eliminating use and trash. Since that day, I started keeping any data I collected and saving it for reuse. Initially I wanted to pursue Computer Science and Electronic Engineering because of my love for computers and I wanted to change the world as my strength could carry me but alas, I found myself in Geo-informatics and Surveying and completely fell in love with it. More like it was meant for me.

How I met OpenStreetMap

… See full entry

AS

It was a big surprise when I received a mail that mentioned I would be presenting at State of The Map Asia 2022, my first-ever International Conference. The moment became more exciting when Open Mapping Hub - Asia Pacific sponsored us to visit Legazpi, Philippines, and present our work in person. Ever since I started contributing to OpenStreetMap around 5 years ago, this was the first time, I had been a part of such a great event. I thought all the hard work and perseverance had finally paid off.

Due to General Election in Nepal, we missed the first two days of Pista NG Mapa but were able to attend all the sessions of SOTM Asia, 2022. Since it was my first international flight, it was a whole new experience and excitement when I reached Legazpi City on 22th Nov. Mount Mayon covered under the cloud was there to welcome us to this beautiful land where we were about to meet OSM enthusiasts around Asia and spend the most exciting five days of my life.

… See full entry

The problem

Historically, the map at map.atownsend.org.uk didn’t change the URL as you moved around, and you had to press a “permalink” button to save the current location. This wasn’t ideal, so I had a look around for alternatives. Helpfully, the Leaflet site has a list of suitable plugins. Of those, leaflet-hash was suggested elsewhere. That seems to be still in use, although it hasn’t been updated for a while. It is spectaculary easy to use, and “does what it does” with no problems.

The challenge is that it stores the current location (for example “https://map.atownsend.org.uk/maps/map/map.html#11/54.4900/-3.1098”) but doesn’t store the current layer. That map currently has a choice of 5 base maps (test instances have 6) and 5 overlays:

How to solve this

… See full entry

… See full entry