In Croatia some residential areas are well kept, while others are quite lacking. Example: Zadar vs Preko.

What to map?

This begs the question which entity should be mapped first with the largest gain for the effort? This can only be answered in the need of the beholder. For a tourist it would be street names, since accommodations are bound by an address and after the town name, the street name is the next factor to reduce the search area of the location.

There is a major requirement for this to fruition and that is that the town has to have varied street names. Depending where in the country one is traveling, it is quite typical that the street names are equal to the town’s name (e.g. Lazina). In such a situation latitude/longitude coordinates should be a requirement of the host to provide over the house number, because lots are not linearly arranged. Plus lots of such towns don’t have house numbers and/or buildings on the map.

Where are the buildings?

Lots of towns have buildings, though these are usually only a fraction of what actually exists. E.g. in Preko:

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Abstract

Most GPS navigation systems today rely heavily on street names and place names for route guidance. While this works well in some situations, it can be confusing and less user-friendly, especially when navigating unfamiliar areas or for people with language barriers.

This project aims to change the game by introducing landmark-based navigation into Valhalla, the OpenStreetMap (OSM) routing engine. Instead of hearing complex instructions like “Turn left onto Obmannamtsgasse,” users will get simple and intuitive directions like “Turn right at the Tesco supermarket.” This landmark-based approach makes navigation more accessible and user-friendly, reducing stress and improving the overall experience.

The high level implementation overview of this project is available here

Landmark Based Navigation Project - Github

Now let’s dive into the details!

Implementation Details

In simple terms, this project enhances Valhalla’s routing capabilities by bringing in landmarks as navigation support. We pull Points of Interest (POIs) from PBF files and store them as landmarks in a special intermediate storage. Then, we associate them to the map’s edges and store them into graph tiles. When clients call Valhalla services, these landmarks become part of the route directions and make navigation easier.

About Landmark Itself: Data Source and Selection Criteria

POIs are naturally supported in OSM PBF Format (“Protocolbuffer Binary Format”), a sort of digital map format. OSM uses “tags” in the form of “key=value” to describe places and things on the map. One special key, “amenity”, helps us find places that are useful or important for folks like visitors and residents. We use this key to select landmarks.

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Why and How I Mapped all the Landcover in Belize

I joined OSM in 2016 when my friend suggested I do something useful. He knew I was interested in geography as I was trying to map on Google. But then a year later Google shut down mapping for users because of an Android pissing on Apple incident in Pakistan.

I then became really interested in OSM and started mapping. I had a desire for all the landcover to be mapped. I first started around my town of Spanish Lookout, then decided to do my entire district of Cayo.

It was slow work, but I persevered. After I completed the second and third districts of Stann Creek and Toledo, I learned a few tricks of mapping. By that time it was the year of 2022. The mapping tips I learned were so useful that by September of 2023 I had completed the other 3 districts, Corozal, Orange Walk and last of all Belize district.

There were a few other mappers that helped, but I did roughly 92% of the entire country. And in that time I would estimate that about 99% of roads and 97% of buildings have been mapped as well.

Going Forward

Going forward I’m planning on keeping the country up to date and continuing to map all buildings, power lines, speed bumps, etc.

And also I’m thinking of mapping all surrounding districts of Mexico and Guatemala, which we’ve started already.

Percentage of Landcover in Belize

Type	Area Sq. Km.	Percentage
Wood/Forest	14,813	64.5%
Meadow/Grassland	2,366	10.3%
Wetland	1,470	6.4%
Scrub	1,381	6.0%
Farmland	1,053	4.6%
Water	782	3.4%
Orchard	295	1.3%
Residential/Ind/Com	224	1.0%
Beach/Sand	2	0.0%

Today is Saturday

I haven’t been very active on OSM in the past weeks and months - other than work-related reasons this was mainly because of orienteering: competitions almost every weekend, and when I did map, I mapped for orienteering, mainly features that are of no interest to OSM (cf. last blog post).

One orienteering competition, though, caused an OSM edit. The venue was a typical German sports ground consisting of a football pitch, a running track around it, a pavilion building and not much else (no bleachers, no grandstand). Mapped in OSM was the outline of the racetrack, tagged leisure=stadium.

This inaccuracy is quite frequent (a few years ago refining sports grounds was my main pastime in OSM), partly because sports grounds in German villages are often aggrandizingly called “Stadion”.

About its fence: I have to admit that I was never really strict about One feature, one element. But the OOMapper, does not interpret, for instance, “leisure=pitch barrier=fence” as fence filled with open land, which made me realize that it would be clever to abide by the OFOE rule.

So it’s (in JOSM) Ctrl+C, Ctrl+Alt+V to duplicate the area, then tag the new way barrier=fence. Where the entrance is, there is a node which I tagged entrance=main and barrier=gate. In the German Telegram group it was suggested to maybe have entrance=main on leisure=sports_centre only and barrier=gate on barrier=fence only, which I think is somehow logical but I decided against it. Maybe I’ll change my mind after looking at more examples.

Oh, and one more tip for sports mappers: When there is a short track like for 100m or long jump only and you map it as an area, don’t forget to add area=yes, because otherwise it will be interpreted as a rectangular track along the outline of the actual track.

Happy mapping everybody!

when placing these down; what is the universally accepted placement and direction of signal lights?

Is it the location of pole and direction of lights controlling traffic. Or is it attached to the Roadway and pointed in the direction of signaling? Any help would be appreciated…

The Wiki info on usage is very generic in wording..

Author: Khan Mohammad Ibtehal(Alumni, YouthMappersatBSMRMU)

Since a long journey starting from December 2020, YouthMappers at BSMRMU had been working on OpenStreetMap, connecting with other YouthMappers Chapter, OSM organization from national and international community. From September 2022 YouthMapper at BSMRMU had been majorly working with Humanitarian OpenStreetMap Team (HOT)- Open Mapping Hub Asia Pacific (AP-Hub) under student sponsorship grant that YouthMappers at BSMRMU awarded.

Celebrating International Mother’s Language Day

On 21st February, YouthMappers at BSMRMU held “Mapathon Contest and discussion session on the occasion of International Mother Language Day”. A Discussion forum was settled on the Importance of Language and using local language on contributing towards OpenStreetMap. The event was held in collaboration with YouthMappers, University of Dhaka Chapter, YouthMappers - Jahangirnagar University Chapter, CUSS YouthMappers, PSTU YouthMappers, YouthMappers at Eastern University, Bangladesh. Almost 45 participants attended the event.

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When people hear the word “mapping,” they often envision a complex web of points and lines on a piece of paper, which can be intimidating for newcomers. However, mapping is not as daunting as it may seem, it’s an art that can be mastered. Just like any other science, mapping requires active engagement in related activities. To make learning less challenging, we established Udayana Remote Sensing and GIS (URGis) as a mapping community to help each other grow our remote sensing and GIS skills.

Throughout our journey, we’ve harnessed the power of mapping software like OpenStreetMap (OSM) to assist students in developing their skills and confidence. OSM provides convenient tools for various mapping applications, from displaying different map themes to adding points, polygons, or polylines and populating attribute tables. We’ve witnessed this transformation through our activities. In the past semester, URGis focused on introducing OSM to students in our faculty, offering engaging materials and hands-on practice with web-based OSM. We also invited OSM experts to provide further insights into projects involving OSM.

Our main goal is to empower students by providing opportunities to participate in remote sensing and GIS projects, experiences that go beyond traditional classroom learning. Through collaboration with OpenStreetMap, we’ve engaged our members in mapping projects, with OSM funding allowing us to conduct mapping workshops and reach a wider audience, benefiting from the expertise of the OSM team.

OUR ACTIVITIES

We kicked off the OSM Workshop on July 11th, 2023, right on our campus, introducing OSM as a participatory map and emphasizing its role in disaster mitigation. Dewa Putu Adikarma Mandala (Bli Dewa) from Program Siap Siaga Bali delivered the lecture, and we had the chance to use OSM ourselves. The interactive sharing session with Bli Dewa sparked lively discussions, with everyone actively asking and answering questions.

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Jumped in committed to contribute before ever downloading or selling the map and software I just knew I could help Now it’s September 22 2023 Let’s see how long it takes me to figure this out

As Ausome Maps’ journey comes to a close, our focus in the past few months is how might we continue and amplify the impact that Ausome Maps has started for the years to come. The core of our project is map out therapy centers aside from tagging special education schools. Our constant problem for these datasets is maintaining credibility of information and the mechanism for updating. Looping this in with the bigger problem when it comes to accessibility of information, we decided to develop TherapEase.

TherapEase is not only a platform but a venture that aims to help Filipino families with kids in the spectrum or with developmental delay.

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Last July, we invited 97 students of Bachelor of Science in Information Technology and Bachelor of Science in Education of the Polytechnic University of the Philippines - Bansud, Oriental Mindoro Campus to join us in a Make the Map Ausome Event.

As part of the program, they learned about open mapping, open data, and OpenStreetMap through an introduction by Ian Panganiban, Ausome Maps’ Technical Consultant.

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Last May, we were invited to join MapaTalks Vol.1 at the De La Salle University. We are joined with 15-20 mappers sharing about their projects and learning more about mapping.

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In the dawn of 2022, the intrepid members of YouthMappers at SUST set forth on an ambitious journey, propelled by their shared passion for mapping and a vision of a brighter tomorrow. With the steadfast support of AP-HUB’s Student Club Sponsorship, their mission was set in motion, carrying them through the uncharted waters of open mapping until September 2023.

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I spent a few days in Penang for a separate work trip. Took my time to survey and map the area too. I found that Pengkalan Weld is already well mapped. Specifically the area around Lebuh Pantai and Gat Lebuh Chulia. So I only needed to add some extra details and POIs in the area.

In the second semester of the academic year 2022-2023, we took a course, GmE 203 Principles of GIS, under Prof. Macapinlac and Prof. Ang from the Department of Geodetic Engineering at the University of the Philippines Diliman, and we found ourselves fascinated by the world of Geographic Information Systems. Through the end of the semester, we absorbed interesting things about GIS concepts and technologies. Yet, the pinnacle of our journey in this course was the capstone paper project, wherein we were tasked to bring together all that we had learned and apply it to a real-world scenario.

Fueled by determination and a passion for open-source technologies in the geospatial field, I, together with Honeylyn Carpio collectively decided to embark on a project of significant ecological relevance. Thus, the project “WEB VISUALIZATION AND SPATIAL ANALYSIS OF TREE SPECIES DISTRIBUTION AT UNIVERSITY OF THE PHILIPPINES DILIMAN ACADEMIC OVAL” was conceptualized.

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Storing map tiles in a single file is a common way to load basemaps on a map client.

There are a few formats available to do this, with different use cases.

Offline

mbtiles

• A format innovated by Mapbox, but is a fully open spec.
• Essentially an SQLite database linking to embedded tiled images.
• The client interfaces with the database and loads each tile as required by the basemap.

OSMAnd SQLite

• Based on BigPlanet SQLite format.
• Basically the same as mbtiles, but a slightly different database schema.

A small aside.

Sometimes it’s necessary to generate both mbtiles and OsmAnd format to view in different software, which is a pain.

There is an open issue in OsmAnd to support mbtiles format, but it’s not a priority for now.

Knowing that they are very similar file formats, I considered the possibility of accessing one SQLite database via another ‘wrapper’ SQLite database in a custom view. This view would map tables and fields from one database schema to the other, eliminating the need to store both tilesets for the same data.

Assuming you have an MBTiles table with the following schema: CREATE TABLE mbtiles_table ( zoom_level INTEGER, tile_column INTEGER, tile_row INTEGER, tile_data BLOB );

And you want to create a view for an OsmAnd SQLite table with a schema like: CREATE TABLE osmand_table ( _id INTEGER PRIMARY KEY AUTOINCREMENT, x INTEGER, y INTEGER, z INTEGER, tile_data BLOB );

You can create a view to convert between them like this: CREATE VIEW osmand_mbtiles_view AS SELECT NULL AS _id, -- Use NULL for auto-increment _id tile_column AS x, tile_row AS y, zoom_level AS z, tile_data FROM mbtiles_table;

I couldn’t get this to work when testing, however (it may warrant further investigation).

If you find a solution, please do let me know!

Online

PMTiles

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Hello, fellow mapmaking enthusiasts! Today, we're excited to celebrate the remarkable success achieved in the past three months. This success story revolves around the passionate youth mappers of G-SIG Timor-Leste, who have embarked on an inspiring journey into the world of community mapping. Join us as we share our experiences and accomplishments, and together, let's continue to work towards mapping excellence in our beloved country Timor-Leste:).

Introduction

In the picturesque landscapes of Timor-Leste, the past three months have seen a flurry of mapping activities that are transforming the way we perceive and utilize geographical data. From empowering students and volunteers to conducting specialized disaster management training, our OpenStreetMap (OSM) community in Timor-Leste has been fervently engaged in expanding the horizons of open mapping. In this OSM Diary entry, I am delighted to share the details of our endeavors during the months of July to September 2023.

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The devastating events in Morocco (earthquake) and Libya (floods) happened within two days of each other on the 08 & 10 September 2023. Both have meant large scale destruction of infrastructure and thousands of tragic deaths and injuries.

OSM communities in both countries (OSM Maroc and OSM Libya), alongside partners, have responded and with huge support from mappers from the OSM community across the world.

A screenshot from OpenAerialMap showing the devastation to the city of Darnah in Libya (imagery courtesy of Maxar)

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The latest…

The OSM community response

Approximately 1,600 mappers have so far contributed to both campaigns, creating ~220,000 buildings and ~5,000km of roads.

Validation teams at HOT and UN Mappers have been busy providing quality control and trying to keep up with the rapid pace of the mapping.

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Hi there! Today I’ve created a store via Etsy, where I’ll be selling OSM shirts, hoodies and perhaps other items. They’re priced at cost, and in doing so, follow OSM Trademark Policy.

Production

The items are made and shipped by a third party, Gelato, and are produced on-demand in both North America as well as Europe, depending on the product. All products with OSM trademarks are the ‘fairest’ option provided by Gelato. You can find more about that on their website, gelato.com

Why?

I wanted an OSM shirt, and there wasn’t one. So I made one. It’s the very same one available on the store right now. I had a meeting with the CWG about merchandise in June, but have since heard nothing from them. Hence, I went ahead and did it myself.

The store

The store contains other products as well, but the OSM products are neatly organised in a ‘OpenStreetMap’ category.

https://potatodonkeynl.etsy.com/

I have figured out how to get mkgmap to produce fully customized, routable Garmin-compatible IMG files for my nüvi GPS navigator. Here’s the story, with the helpful hints so you can produce custom IMG files to your own specifications, too.

Background

I first got serious about mapping in OSM in 2014, during a diplomatic posting to New Delhi. I had a Garmin nüvi GPS navigator, but Garmin provided no maps for India. A search of the OSM wiki revealed Lambertus’ website that provided ready-to-use, downloadable IMG files, which proved a godsend. Fast forward to 2015 and my diplomatic posting to Turkmenistan. That story is told in a recording of my 2019 banquet speech to the North American Cartographic Society. People in Turkmenistan and elsewhere relied on Lambertus’ IMG files to navigate in countries for which Garmin provides no maps. Alas, a couple of years ago Lambertus’ website went defunct. I tried bbbike’s IMG downloads, but they leave out numerous POIs I know are either useful or necessary for both diplomats and local residents in Central Asia.

I decided to study mkgmap so as to generate custom IMG files. As an aside, when I mentioned this to a longtime OSMer friend, the response was, “Good luck with that.”

The documentation

The documentation on mkgmap is a bit sparse, and it is not really comprehensive. The base documentation found at https://www.mkgmap.org.uk/doc/index.html is enough to get you started, but is written by computer experts for other computer experts. It is inaccessible in places to those of us who majored in political science or economics.

Andy Townsend’s instructions at osm.org/user/SomeoneElse/diary/38613 proved very helpful in shedding light on how things work.

Then I stumbled across ligfietser’s style sheets at https://github.com/ligfietser/mkgmap-style-sheets. This shed even more light on how to get rendering to work the way I wanted it to.

Phase I - getting it to route

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