FOSS4G 2023

Vectortile ecosystem have made big changes in Web Mapping, especially in terms of Client-side map rendering. Thesedays, costs of producing and streaming tiles have been dramatically reduced by some techniques - tippecanoe, PMTiles… and so on. However we have the problem important but unsolved yet: Dynamic tiles. Techniques which are matured and widely used are for Static tiles. Static tiles are not good at streaming data frequently updated but we sometimes need to dynamically serve such data. In this talk, I’ll survey techniques for Dynamic tiles which already exist and propose the solution for this.

Japan fascinates the world with its rich culture, materialized with a full of cultural sites in its territory as example. To protect it, the Law for the protection of cultural properties established a “cultural heritage” designation system, where designated places should be preserved.
With the collaboration of the Nara National Research Institute for Cultural Properties, Japan cultural heritages has been mapped as a WebGIS tool where more than 100,000 places can be visualized.
In this talk will be presented tool functionalities and technically its OpenSource based architecture.

GTFS is stands for General Transit Feed Specification, which is developed by Google and used for describing schedules of public transpotation. A bunch of dataset is distributed in the world and GTFS includes geospatial information - stops and routes. To utilize such intresting data, we have developed GTFS-GO - QGIS plugin to process GTFS. You can translate GTFS to GIS data and visualize them by GTFS-GO. The plugin can be used for analyzing public transportaion by aggregating traffic frequencies on each stop or route. In this talk, you can see how GTFS is visualized or analyzed by using GTFS-GO on QGIS.

MIERUNE is a geospatial tech company in Japan. We set FOSS4G as a foundation of us and continuously join the communities as an user, a developer or a contributor. Thesedays we have been committing our new service - MIERUNE BASE. MIERUNE BASE is focussing on easily serving and sharing datasets on a simple architecture based on serverless and FOSS4G. In this talk, we will introduce the architecture or techniques of MIERUNE BASE.