A year or two back, the Washington Department of Natural Resources made some fascinating maps of braided river channels. These maps used lidar-derived imagery to show the twisting patterns of the riverbeds in a novel way — as bright, colorful images on a black background. They looked similar to x-rays, revealing the bones of the…
A King County policy priority is building equity and opportunity for all. King County’s pro-equity policy agenda has eight focus areas, one of which is environment and climate. Recently I worked with the King County Solid Waste Division to help develop an ArcGIS Online web application for the equity and social justice (ESJ) assessments of…
Many of us have become numb to the latest news of firearm deaths across America. At least once almost every week there is news of a shooting in a school, workplace, church, home, or other public place. National news during the past 10 days included a school shooting in Colorado and reports of a spike…
Some modern mapmaking tools don’t have direct antecedents. Yes, maps have long been composed of many layers of separate artwork just as we have digital map feature layers now, but in the during the time of Mylar overlays, pin registration, and photomechanical reproduction that resulted in static paper maps, there was nothing like the dynamic and highly interactive web maps that are second nature to us today.
King County Metro Transit, in coordination with area jurisdictions, including the City of Seattle, has long designated a network of high-ridership bus routes that can use typically plowed streets and which avoid steep hills to provide a reduced but core level of service during major snow events.
It is fortunate that weather conditions over the last six years had not necessitated the activation of Metro’s Emergency Snow Network and the publication of their Emergency Snow Network map. That is until two days ago.
Cartographers and GIS analysts often have to make choices about where, within a given map space, to position points that represent real-world features. Shouldn’t be a big deal though, should it? A place is a place, a location a location. It’s just there. You know, where the house or building or parking lot, or whatever, sits on the ground! Well, it isn’t that simple.
Kudos to Oregon State University Libraries, Oregon State University Press, and the Institute for Natural Resources on the release of the 2018 edition of the Atlas of the Pacific Northwest. The atlas includes more than 100 interactive maps that provide data for Oregon, Washington, and Idaho.
Last month we introduced a new GIS & You feature—a (hopefully) monthly contest called Where in King County? This month’s contest is more difficult.
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?