Next Article in Journal
Modelling Urban Housing Stocks for Building Energy Simulation Using CityGML EnergyADE
Next Article in Special Issue
Recommendation of Heterogeneous Cultural Heritage Objects for the Promotion of Tourism
Previous Article in Journal
GeoAnnotator: A Collaborative Semi-Automatic Platform for Constructing Geo-Annotated Text Corpora
Previous Article in Special Issue
A Knowledge-Based Filtering Method for Open Relations among Geo-Entities
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle

The Light Source Metaphor Revisited—Bringing an Old Concept for Teaching Map Projections to the Modern Web

1
Institute of Cartography and Geoinformation, ETH Zurich, 8049 Zurich, Switzerland
2
ESRI Switzerland, 8005 Zurich, Switzerland
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2019, 8(4), 162; https://doi.org/10.3390/ijgi8040162
Received: 28 February 2019 / Revised: 20 March 2019 / Accepted: 24 March 2019 / Published: 28 March 2019
(This article belongs to the Special Issue Open Science in the Geospatial Domain)
  |  
PDF [2835 KB, uploaded 16 April 2019]
  |  

Abstract

Map projections are one of the foundations of geographic information science and cartography. An understanding of the different projection variants and properties is critical when creating maps or carrying out geospatial analyses. The common way of teaching map projections in text books makes use of the light source (or light bulb) metaphor, which draws a comparison between the construction of a map projection and the way light rays travel from the light source to the projection surface. Although conceptually plausible, such explanations were created for the static instructions in textbooks. Modern web technologies may provide a more comprehensive learning experience by allowing the student to interactively explore (in guided or unguided mode) the way map projections can be constructed following the light source metaphor. The implementation of this approach, however, is not trivial as it requires detailed knowledge of map projections and computer graphics. Therefore, this paper describes the underlying computational methods and presents a prototype as an example of how this concept can be applied in practice. The prototype will be integrated into the Geographic Information Technology Training Alliance (GITTA) platform to complement the lesson on map projections. View Full-Text
Keywords: map projections; computer graphics; visualization; 3D; education; teaching; multimedia; open educational resources map projections; computer graphics; visualization; 3D; education; teaching; multimedia; open educational resources
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Heitzler, M.; Bär, H.-R.; Schenkel, R.; Hurni, L. The Light Source Metaphor Revisited—Bringing an Old Concept for Teaching Map Projections to the Modern Web. ISPRS Int. J. Geo-Inf. 2019, 8, 162.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
ISPRS Int. J. Geo-Inf. EISSN 2220-9964 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top