Category: Geospatial Services

Surveyors Stepping Up to International Foot

How long is a foot? Well, that depends on who’s doing the measuring, what state they are doing the measuring in, and what measuring “stick” they are using. Land surveyors in most U.S. states use the U.S. survey foot. The rest of the world, including some U.S. states, uses what’s known as the international foot,… Read More »

Task Force Positions Geospatial Community for Proposed 2022 Datum Changes

By Dick Kleinmann, PLS The National Geodetic Survey (NGS) soon will be replacing the North American Datum (NAD) of 1983 and the North American Vertical Datum (NAVD) of 1988 to improve the National Spatial Reference System (NSRS) – the system that defines latitude, longitude, height, and orientation throughout the nation. Read More »

Why Should I Hire an ASPRS-Certified Mapping/GIS Expert?

This image from Tinley Park – part of Ayres Associates’ work for the suburban Chicago GIS Consortium – exemplifies a project where CP meets CMS-GIS/LIS. Much of the mapping Ayres does for local government is collected from aerial imagery and is delivered in GIS-ready format. In this example, paved surfaces and buildings are displayed on… Read More »