of Japan 政府オープンソース文化の 地理院での進捗 Government open source in GSI 国土地理院情報普及課 藤村 英範 1 2015-11-07 14:40-16:10 Code for Japan Summit 2015 “How to build open source culture inside government” Slides available at speakerdeck.com/hfu
Maps cmp compare tiles experimental_dem DEM data in vector tiles layers-dot-txt-spec layer metadata for web maps in JSON experimental_wmts OGC WMTS metadata of GSI Tiles kakotile-spec metadata for past tiles cocotile-spec metadata for available layers for each tile id mokuroku-spec metadata for each tiles in CSV mokuroku-generator generate mokuroku by scanning tileset kakotile-generator generate kakotile by scanning backups dkgshp2geojsontiles convert GSI’s Shapefile data to GeoJSON Tiles octpng-spec availability tiles in an octave high octpng-bin availability tiles generator daicho-spec mokuroku in SQLite daicho-init initialize daicho qdltc tiles downloader server-load monitor server load vector-tile-experiment vector tiles of our map data gsitiles-cesium GSI Tiles in Cesium geojson-with-style-spec convention to add style information in GeoJSON gdal2xyztiles.py OGC WMTS metadata of GSI Tiles style-dot-js-spece convention for the style of vector tiles ckanext-basemaps selectable base maps in CKAN
on our main business → more valuable service [FYI] benchmark result of GSI Vector Tiles in geobuf format (1) 65% file size reduction (2) Parsing speed gains vary among web browsers (Safari 0%、Firefox 2%、Chrome 40% faster)