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Kohei Otsuka edited this page Feb 29, 2024 · 30 revisions

Maplat Logo



Maplat is the cool Historical Map/Illustrated Map Viewer.
It can transform each map coordinates with nonlinear but homeomorphic projection and makes possible that the maps can collaborate with GPS/accurate maps, without distorting original maps.
Data editor of this solution is provided as another project, MaplatEditor.
This project won Grand Prize / Educational Effectiveness Prize / Visitors Selection Prize on Geo-Activity Contest 2018 held by Ministry of Land, Infrastructure, Transport and Tourism.

Maplatは古地図/絵地図を歪める事なくGPSや正確な地図と連携させられるオープンソースプラットフォームです。   他のソリューションにない特徴として、各地図の座標変換において非線形かつ同相な投影変換が定義可能という点が挙げられます。

Introduction slide (In English, ICC Tokyo 2019)

Introduction of Maplat

Introduction slide (In Japanese, FOSS4G Tokyo 2017)

Introduction of Maplat

Data Editor

Please use MaplatEditor for data creation.


Latest result

Latest result is shown below:

Documentation is undergoing.



Collaboration demo with Jizo project

Code 4 NaraからUrban data challenge 2016に応募中のMaplatと地蔵プロジェクトをコラボレーションさせたデモを作りました。


This project exists thanks to all the people who contribute.


Thank you to all our backers! 🙏 [Become a backer]


Maplat is supported by

Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]