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New issue is now online!
Cartographica
Volume 53, No. 1, Spring 2018
Cartographica Online: http://bit.ly/cart531
Quality Assessment and Accessibility Mapping in an Image-Based Geocrowdsourcing Testbed
Matthew T. Rice, Dan Jacobson, Dieter Pfoser, Kevin M. Curtin, Han Qin, Kerry Coll, Rebecca Rice, Fabiana Paez, Ahmad Omar Aburizaiza
Geocrowdsourcing is a significant new focus area in mapping for people with disabilities. It utilizes public data contributions that are difficult to capture with traditional mapping workflows. Along with the benefits of geocrowdsourcing are critical drawbacks, including reliability and accuracy. A geocrowdsourcing testbed has been designed to explore the dynamics of geocrowdsourcing and quality assessment and produce temporally relevant navigation obstacle data. These reports are then used for route planning, obstacle avoidance, and spatial awareness. Recently, the geocrowdsourcing testbed has been modified to focus on the contribution of images and short descriptions, rather than the more lengthy previous reporting process. Read it at Carto Online>>>http://bit.ly/cart531a
Bedolina: Map or Tridimensional Model?
This article proposes a semiotic approach to interpreting the Valcamonica rock maps located in northern Italy, taking Bedolina Rock n. 1 as an example. Specifically, it uses cartographic semiosis, a theory formalized in Italy over the last decades, to suggest that prehistoric engravings are not mere representations of territory but also symbolic markers that record the relationship between the Camuni, an ancient Italian people, and their mountain life environment.
Read it at Carto Online>>>http://bit.ly/cart531b
Air Population over the Great Plains
Michael P. Peterson, Paul Hunt
Early trails through the Great Plains remind us that humans have passed through the area for many years. The area was seen as an impediment; the purpose was simply to get to the other side. The Great Plains are now often referred to as “flyover country,” a disparaging description indicating that most people simply fly over. The “flyoverness” of the Great Plains can be examined through air population, the total number of people flying above the earth at any point in time. The instantaneous location of aircraft can now be tracked through an extensive network of ground aircraft sensors based on ADS-B (Automated Dependent Surveillance-Broadcast) that provides the position of an aircraft along with its identification, aircraft type, altitude, and speed. Read it at Carto Online>>>http://bit.ly/cart531c
Systematic Error Reduction in Geometric Measurements Based on Altimetric Enrichment of Geographical Features
In most GIS software, geometric measurements (length, area) computed from the geometry of vector objects are performed in two dimensions, which generates systematic underestimates. Several reasons can explain this critical situation: two of these include deficiencies in the geometric modelling of vector data and absence of correctly implemented methods for computing measurements using altitudes. To reduce the systematic error in geometric measurements caused by the omission of altitudes, methods are proposed to (1) enrich the geometry of geographical features using external altimetric data and (2) compute length and area using altitudes. Read it at Carto Online>>>http://bit.ly/cart531d
Coopting Cops with Maps: The Rhetorical Power of Cartography in Modern Policing
In the 1990s, the New York City Police Department (NYPD) famously implemented a new strategy for reducing crime. Along with a “broken windows” orientation, police leadership used new management principles to analyze crime and direct police force activities, and geospatial software was central to these principles. The use of maps increases the credibility of an argument, but a critical examination of the historical development of policing tactics and the application of rhetorical concepts calls into question the validity of the NYPD's use of mapping in the context of crime reduction.
Read it at Carto Online>>>http://bit.ly/cart531e
Cartographica is an international and interdisciplinary peer-reviewed journal that publishes transformative research, education, and practice contributions to the social, political, technological, and historical aspects of cartography and geovisualization.
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