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"Thematic maps."
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The island : London mapped
A masterpiece of imaginative cartography, artist Stephen Walter's detailed maps of London reveal much more about the city than its winding streets and historic buildings. London's streets, built up over more than two thousand years, are a maze of history, cultures, and stories. In his fantastically detailed maps of the city, Stephen Walter translates these elements into a tangle of insightful yet humorous words and symbols that make up a complex of hidden meanings and wider contradictions. Testament to Walter's skill and importance as a cartographer, his groundbreaking, oversized map The Island was one of only two contemporary works to feature in the seminal Magnificent Maps exhibition held at the British Library in 2010, the other by Grayson Perry, alongside hugely important historical maps, such as Pierre Desceliers's 1550 world map. The work, which reimagines London as an insular body of land surrounded by water, has been reconfigured and turned into Walter's own version of a London street atlas, with readers able to explore his unique vision of the city by flicking through the pages. A grid at the front of the book lets readers navigate their way through the map and the large-scale reproductions allow for close examination of his witty depictions. Walter's maps have a cult following and now a wider audience will be able to immerse themselves in his personal vision that both celebrates the art of cartography and pokes intelligent fun at the city he calls home.
Book
Evaluation of Groundwater Potential Zones in Sg. Seguntor, Sandakan, Sabah, Malaysia by Using the Geographical Information System (GIS) Method
This study was conducted to determine the groundwater potential zone by using the Geographical Information System (GIS) method in Sungai Seguntor, Sandakan, Sabah, Malaysia, and its surroundings. The study area consists of the Sandakan Formation, the Volcanic Breccia and the Quaternary Alluvium. The ArcGIS 10.5 and Global Mapper software were used in this study. Eight thematic maps have been produced: lithological map, rainfall map, drainage density map, lineament density map, soil type map, landuse map, elevation map and slope steepness map. GIS methods were used during the spatial analysis stage. All the thematic maps are weighted based on their emphasis on the existence of groundwater. During the map integration stage, the Raster Calculator is used based on the Eigen Vector of each parameter. The final map produced shows that almost 30% of the study area has high groundwater potential, most of which is in lowland alluvium areas with relatively high drainage density. This final map also shows significant results with tube well data obtained from the Department of Minerals and Geosciences, Sabah, Malaysia.
Journal Article
Do Different Map Types Support Map Reading Equally? Comparing Choropleth, Graduated Symbols, and Isoline Maps for Map Use Tasks
It is acknowledged that various types of thematic maps emphasize different aspects of mapped phenomena and thus support different map users’ tasks. To provide empirical evidence, a user study with 366 participants was carried out comparing three map types showing the same input data. The aim of the study is to compare the effect of using choropleth, graduated symbols, and isoline maps to solve basic map user tasks. Three metrics were examined: two performance metrics (answer accuracy and time) and one subjective metric (difficulty). The results showed that the performance metrics differed between the analyzed map types, and better performances were recorded using the choropleth map. It was also proven that map users find the most commonly applied type of the map, choropleth map, as the easiest. In addition, the subjective metric matched the performance metrics. We conclude with the statement that the choropleth map can be a sufficient solution for solving various tasks. However, it should be remembered that making this type of map correctly may seem easy, but it is not. Moreover, we believe that the richness of thematic cartography should not be abandoned, and work should not be limited to one favorable map type only.
Journal Article
An uncommon atlas : 50 new views of our physical, cultural and political world
\"A stunning geographical exploration of our world through 50 unique maps. Modern satellite and geographical technology has enabled the world to be researched in new and incredible detail. From measuring species diversity to monitoring land shifts, our physical and sociological world is mapped like never before. Includes 50 specially commissioned maps that examine our world in a beautifully visual and fascinating way. Alastair Bonnett accompanies each map with a vivid essay that provides detailed insight into how the planet has changed and what it may look like in the future. From examining new deserts and charting airspace, to revealing emerging lands and measuring each continent's natural treasures, each map showcases an important part of our world's history, sociology and of course, geography\"-- Provided by publisher.
Book
Land Use Thematic Maps Recommendation Based on Pan-Map Visualization Dimension Theory
In the era of information and communication technology (ICT), the advancement of science and technology has led to a trend of diversification in map representation. However, the lack of professional knowledge means that there is still a challenge in determining the appropriate type of thematic map for land use expression. To address this issue, this paper proposes a knowledge recommendation method for land use thematic maps based on the theory of visualization dimensions. Firstly, we establish a knowledge ontology of land use thematic maps centered on spatial data, data characteristics, visualization dimensions, thematic map forms, and application scenarios. A land use thematic map knowledge graph is constructed through knowledge extraction and storage operations. Secondly, knowledge embedding is performed on the knowledge graph to enable the knowledge-based expression of map visualization elements. Finally, based on the knowledge elements of land use thematic expression, a similarity calculation model is established to calculate the similarity between input data and the spatial data characteristics, visualization dimensions, and application scenarios within the knowledge graph, deriving a comprehensive similarity result to achieve precise recommendation for land use thematic map forms. The results show that the method can provide a more accurate visualization reference for the selection of land use themes, meeting the diversified needs of land use thematic expression to a certain extent.
Journal Article
What Went Wrong for Bad Solvers during Thematic Map Analysis? Lessons Learned from an Eye-Tracking Study
Thematic map analysis is a complex and challenging task that might result in map user failure for many reasons. In the study reported here, we wanted to search for differences between successful and unsuccessful map users, focusing—unlike many similar studies—on strategies applied by users who give incorrect answers. In the eye-tracking study, followed by a questionnaire survey, we collected data from 39 participants. The eye-tracking data were analyzed both qualitatively and quantitatively to compare participants’ strategies from various perspectives. Unlike the results of some other studies, it turned out that unsuccessful participants show some similarities that are consistent across most analyzed tasks. The main issues that characterize bad solvers relate to improper use of the thematic legend, the inability to focus on relevant map layout elements, as well as on adequate map content. Moreover, they differed in the general problem-solving approach used as they, for example, tended to choose fast, less cautious, strategies. Based on the collected results, we developed tips that could help prevent unsuccessful participants ending with an incorrect answer and therefore be beneficial in map use education.
Journal Article
RESEARCH ON THEMATIC MAPS IN THE NEW CENTURY EDITION OF THE NATIONAL GEOMATICS ATLAS OF THE PEOPLE’S REPUBLIC OF CHINA
The National Geomatics Atlas is the first volume of the new century edition of the National Huge Atlas of the People's Republic of China, and is one of the important achievements of this research and development project. The National Geomatics Atlas consists of four thematic map groups and one place name index, such as the sequence map group, the political terrain map group, the land cover map group and the city map group. The research object of this paper is the thematic maps, which are mainly distributed in the sequence map group, the land cover map group and the city map group. This paper is aimed at the design and compilation of thematic maps, including a brief introduction of thematic maps selection, layout design, thematic map technical process, and thematic symbol design.
Journal Article
The Land Use Mapping Techniques (Including the Areas Used by Pedestrians) Based on Low-Level Aerial Imagery
Traditionally, chorochromatic maps with a qualitative measurement level are used for land use presentations. Along with the use of UAV (Unmanned Aerial Vehicles), it became possible to register dynamic phenomena in a small space. We analyze the application of qualitative and quantitative mapping methods to visualize land use in a dynamic context thanks to cyclically obtained UAV imaging. The aim of the research is to produce thematic maps showing the actual land use of the small area urbanized by pedestrians. The research was based on low-level aerial imagery that recorded the movement of pedestrians in the research area. Additionally, based on the observation of pedestrian movement, researchers pointed out the areas of land that pedestrians used incorrectly. For this purpose, the author will present his own concept of the point-to-polygon transformation of pedestrians’ representation. The research was an opportunity to demonstrate suitable mapping techniques to effectively convey the information on land use by pedestrians. The results allowed the authors of this article to draw conclusions on the choice of suitable mapping techniques during the process of thematic land use map design and to specify further areas for research.
Journal Article
MONITORING DEGRADATION OF WETLAND AREAS USING SATELLITE IMAGERY AND GEOGRAPHIC INFORMATION SYSTEM TECHNIQUES
In order to conserve the ecosystems and biodiversity of wetland areas, it is necessary to monitor the degradation of these areas. Currently, Al Razzazah lake and its surrounding areas have degradation significantly due to its low water level, which has negatively affected its biodiversity. Hence, this research aims to propose a method to model the monitoring of spatio-temporal changes in that lake and its surrounding areas with an area estimated at 4660 km² between (1998 – 2018) using Remote Sensing and Geographic Information System (GIS) techniques. After conducting the supervised classification by the method of Support Vector Machine (SVM) for all satellite images, we extracted thematic maps, which contain five classes. The results showed the overall accuracy was 90.11%, 91.60% and 90.57% while the Kappa coefficient were 0.8764, 0.8950 and 0.8821 for 1998, 2008 and 2018 respectively. Results showed that the lake area decreased by 86.21% in the study area in 2018.
Journal Article