“In those days Caesar Augustus issued a decree that a census should be taken of the entire Roman world. And everyone went to their own town to register.” (Luke 2) Fast forward 18 centuries and the US Constitution states: “The actual Enumeration [of every free person] shall be made…every subsequent Term of ten Years, in…
Among the fundamental skills required to be map literate, that is, to be able to read and comprehend maps, are an understanding of scale, the recognition of spatial orientation, and an appreciation of map projections. A higher-level, overarching principle of map literacy is that a single map can seldom tell a whole story, which is a point well made by Dr. Kenneth Field, Esri senior cartographic product engineer, in a recent article in Wired.
You’ve heard about vector tiles. You’ve used vector tiles in a variety of online maps, perhaps without even realizing it. But have you created your own vector tile maps?
King County GIS Training Program partner Eric Pimpler of Geospatial Training Services has authored a fascinating blog post about a building footprint dataset which Microsoft has generated from Bing aerial imagery using artificial intelligence, deep learning, and computer vision.
Fortunately for us in King County, we are well-served by a diverse network of stormwater facilities. King County’s Water and Land Resources Division (WLRD) is responsible for the stormwater system in unincorporated King County. Recently, Alison Sienkiewicz, WLRD stormwater pollution prevention inspector, wrote an article about a team that used GIS tools in the field to map and inventory the King County stormwater system to comply with requirements of the County’s Phase 1 Municipal Stormwater Permit.
Frequent users of King County iMap, the online app that provides scores of the most popular King County GIS data layers in a flexible, multi-feature, interactive map viewer, now have access to 2017 aerial orthophoto imagery as a basemap.
OpenStreetMap (OSM) is a digital map of the world to which individuals, corporations, and government agencies contribute geographic data which can then be freely used by anyone under two conditions.
Data quality at King County GIS includes processes and tools for validation of the contents of the Spatial Data Warehouse. Multiple linked automated and manual steps help ensure good internal consistency and an anomaly-free environment, both for file-system and database objects.
At King County GIS, we connect with data quality at different levels. This post is one of three introductory posts about how King County GIS is working to improve the quality of the County’s GIS data.