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Zainab Ramadhanis's Diary

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Maybe most of us have experienced unpleasant situations with maps, like getting lost on the road due to navigation issues caused by incorrect or outdated maps. This problem is particularly troubling in unfamiliar areas or during long journeys. Poor geospatial data quality often leads to these inaccuracies, resulting in significant inconveniences and even potential dangers. This highlights the crucial role geospatial data plays in our daily lives; when it is inaccurate, it can lead to serious issues.

Geospatial data quality depends greatly on who creates it, especially on platforms like OpenStreetMap (OSM), the world’s largest open mapping platform. OSM’s data comes from many different contributors with different levels of geographic knowledge. This diversity can enrich the data but also lead to heterogeneity. For instance, in the picture below, you can see the differences in digitizing done by various contributors. Some highways are more detailed, indicated by the higher number of nodes in the highway line.

Different digitizing by multiple contributors

The Open Mapping Hub Asia-Pacific knows how important data quality is and works hard to keep OSM data trustworthy. However, they can’t manage data quality worldwide by themselves. They need to collaborate with local communities, who have detailed knowledge of their areas (local knowledge).

The Open Mapping Hub Asia-Pacific runs the Open Mapping Guru (OM Guru) program to improve OSM data quality by involving different OSM communities. I was lucky to join this program on the validation track, focusing on fixing data errors in the Asia-Pacific region, especially in Indonesia. Using my local knowledge, I corrected building positions, highway names, building names, and more (as shown in the picture below).

Example of OpenStreetMap building data errors

Being part of this program has been really great. I’ve learned a lot, like how to check OSM data using tools like JOSM, MapRoulette, and OSMCha. Fixing errors isn’t just helpful for everyone else, it’s also really satisfying for me. It’s amazing that I can help so many people just by sitting at my computer.

I want to say a big thank you to the Open Mapping Hub Asia-Pacific for giving me this chance. I think if we all work together, we can make a big difference in how geospatial data is used, especially on OpenStreetMap.

Thanks for reading my story. Happy mapping!

OMGuru #OpenMappingHubAP

Annual Celebration of Open Data and Maps: State of the Map Asia 2022

Posted by Zainab Ramadhanis on 9 January 2023 in English. Last updated on 20 June 2023.

November 2022 was such a pleasant moment because I participated in the State of the Map Asia for the first time. I always wanted to join the SotM in person since 2020 after participating in lightning talk SotM 2020. In 2021, I didn’t have chance to submit my research result because I just finished it on early July. So, I proposed myself as a translation volunteer for Bahasa Indonesia (see SotM 2021).

In 2022, I also planned to join SotM 2022. However, I couldn’t join because I was very busy with my thesis and had to graduate before September 2022. I thought I didn’t have a chance to join any OSM event in 2022 before my friend sent me an Instagram post that Open Mapping Hub Asia-Pacific was looking for scholars. There were three categories of scholars: community nomination, mapping, and map-making poster. I decided to submit in map-making poster category because I didn’t participate at all in OSM local community in Indonesia since I lived in Taiwan to study, and I didn’t contribute much to OSM in 2022. I created the map-making poster about the quality of road data OSM in Jakarta by comparing the OSM data and local government data (see my poster here). Thank you Open Mapping Hub Asia-Pacific for this amazing chance!

I arrived in Legazpi City, Philippines on Sunday, November 19, 2022. Mayon Volcano became the first thing that I saw when I landed at Legazpi Airport. The scenery of Mayon Volcano was very beautiful, I didn’t take a proper picture at that moment, but I took a good one when I visited the Cagsawa Ruins on Tuesday (11/22).

State of the Map Asia 2022 was actually different than any SotM Asia events before, as it collaborated with Pista ng Mapa (Festival of Maps), so the conference was quite long, five days in total. But I didn’t complain, because all the presentations and workshops were totally fun!

During the registration, all participants were given the Souvenir Program book. Besides the program overview, the book contains a bucket list of things to do when you visit Legazpi City. Because of the bucket list, my roommate (Thi Ngoc Ahn Le) and I tried the chilli ice cream and rode the tricycle. I didn’t think I would do that if the bucket list didn’t exist (thanks a lot, the volunteers!).

Bucket List Pista ng Mapa and State of the Map Asia 2022 Bucklet List Pista ng Mapa and State of the Map Asia 2022

On the third day, I joined an Open Mapping Hub Asia-Pacific workshop. The workshop was supposed to be a maphaton, but due to the limited internet connection, it was changed to running-map, that we should finish several missions in each station. Every station has a different task, and the winner will get 1000 PHP.

On the fourth day or the first day of State of the Map Asia 2022, the talks are divided into two parts: in the gym and auditorium. I attended several talks that I was interested in the most, including “OpenStreetMap and Wikidata in Taiwan” by Dennis Raylin Chen, because I never met any local OSM community when I lived in Taiwan, and Moving from Car-centric to People-centric Mapping: Using Artificial Intelligence and Computer Vision to Map Sidewalks by Tanapon Lilasathapornkit and Meead Saberi, as I am into the AI for mapping. In the night, there was a Cultural Night, where most people wore their traditional outfits. I wore Songket during the Cultural Night, and I received an award for winning the map-making poster.

On the last day, I presented my poster. I was nervous before the presentation, but glad I did it well. It was my first time presenting with a number of people, and it was great to see the audience’s positive reaction. Also, because everyone in the event knows the OSM, it’s easier to explain the OSM data quality. In the night, Open Mapping Hub Asia-Pacific invited all the scholars to have dinner, including a farewell party. There were 15 scholars from several countries; we talked a lot while having dinner, and it was so fun to know all of them and be friends.

Thank you very much, Open Mapping Hub Asia-Pacific, for this pleasure chance!! I got so many new insights about OpenStreetMap, encouraging me to contribute more to it. I hope by reading my OSM diary makes anybody who reads it participate in any OSM event.

Location: RW 02, Gambir, Central Jakarta, Special Region of Jakarta, Java, 10110, Indonesia

Hi everyone, I am Zainab, one of the Indonesian female mappers. Firstly, I want to say thanks to SOTM 2020 for giving me the chance to do this research and presentation it. It is kind of sad we can’t meet directly because of the current issue. Secondly, big thanks for people who listen to my presentation, it’s such amazing many of you are interested with my presentation, so I hope by dropping my slide link can help you to know more about my research.

Have a blessed day, everyone.