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1.
Alexander J. Kent 《The Cartographic journal》2013,50(3):203-204
AbstractColour is considered a key means of expression for use in cartographic works. This is because colours and the relations among them influence not only the aesthetic impression a map creates but also its overall utility. In addition to Newton’s spectral colour theory, today theories with origins in artistic technique are gaining ground in cartography. This article introduces J. Itten’s colour theory (first published in 1961 in The Art of Colour [Kunst der Farbe]) with special attention given to his concept of seven colour contrasts. The article also discusses the suitability and unsuitability of their application in practical cartography, and it contributes original examples employing thematic maps, a discipline with broad possibilities for the application of these inventive methods by today’s mapmakers. 相似文献
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颜色设备相关性的特点导致地图在跨媒介再现时容易出现丢色、偏色等现象,影响地图视觉效果,甚至传输错误的属性、数量等信息。从地图色域特征出发,将地图色域映射问题转换为目标设备色域约束下的地图色域离散点云形变问题。进一步引入Delaunay剖分和几何矩,定义CIE1976LAB色空间下地图色域形变的目标函数,给出全局最优解的求解流程。将算法结果与ICC再现意图结果进行对比,结果表明该方法能够很好保持地图整体的色貌特征以及局部图斑之间的色彩对比、连续等色彩特征,能够显著提高地图跨媒介地图颜色复制精度。 相似文献
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Creating appropriate colour schemes is challenging for both novice and experienced cartographers. This paper introduces an artificial bee colony (ABC) algorithm to automatically create various colour schemes. Colour scheme creation is treated as a constrained search problem in a continuous colour space. We considered the gamut of the target device and a series of cartographic rules, such as convention, discrimination, contrast, perceptual uniformity and brightness mirror, in the ABC algorithm and presented detailed initialization, fitness definition, local exploration, and global exploration methods for creating qualitative, sequential and diverging colour schemes. The proposed method is evaluated with a case study, and the results indicate that compared with the brute force search method, the proposed method can create satisfying colour schemes of similar quality but significantly improved efficiency. 相似文献
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Rasha Deeb Kristien Ooms Veerle Van Eetvelde Philippe De Maeyer 《The Cartographic journal》2013,50(4):325-335
The main goal of this research is to investigate the influence of a map’s background colour on user preferences regarding labels’ typography, including their size, shape, orientation and texture. Four sets of backgrounds were tested: blank maps, grey scale, hot colours and cold colours. The foreground of these maps is populated with name labels, which are associated with point objects or areal objects. Bertin’s visual variables were applied to this set of name labels, both separately and in combination. User preferences of different typographic variations were registered and compared on the basis of different background colours using a one-way ANOVA. The results indicated that the typographic design of the map labels should not be adapted according to the map’s background colour. 相似文献
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《The Cartographic journal》2013,50(4):321-328
AbstractMap generalisation is an abstraction process that seeks to transform the representation of cartographic objects from the original version into a coarser one. The characteristics of cartographic objects and the arrangement of map features have to be observed and preserved in a generalisation process. A method is developed for typifying drainages while preserving their structural characteristics, i.e.presenting the drainages with reduced number of rivers under the constraint of preserving the original structure in terms of the type and distribution of the rivers. We apply Töpfer's radical law to calculate the amount of the rivers to be retained on the generalised map. The drainages share the amount of retained rivers in proportion to the number of their tributaries. In each of the drainages, the shared amount is divided among the rivers based on the dendritic decomposition of the drainage. We implement and test the method in Java Environment. Results from case studies show that the method effectively preserves the original structures of the drainages on the generalised maps. 相似文献
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ABSTRACTThis article presents a quantitative analysis of fictional maps and their relation to historic maps from different periods. Fictional maps are maps of imaginary territories. This type of map is now common in fiction, but they arose relatively late, in the second half of the nineteenth century, and are considered an independent branch of cartography today. They stand out through the way they are published because they are component parts of books and not independent cartographic works, and therefore their creators are not cartographers but rather the authors of these books. Fictional maps are mostly subordinate to the story, but they serve to give a sense of historical authenticity and draw the reader into the story. Without networks of coordinates and with labels such as ‘the end of the world’, they are spatially indeterminate, but they establish a connection between the fictional landscape and its identity. This study deals with 89 fictional maps from recent children’s and young adult literature. First we present a historical overview of these works and fictional maps, and then a cartographic analysis of fictional maps. We examined seventy-seven books with fictional maps and evaluated the maps according to five groups of standard cartographic elements: natural elements, built elements, toponyms, mathematical elements, and explanatory elements. We discuss the differences between cartographic representation of fictional maps and historic maps, and build a cartographic model based on the frequency of cartographic elements to put fictional maps into historic and geographical contexts. 相似文献
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《The Cartographic journal》2013,50(3):218-233
AbstractThis study uses cartometric techniques to reveal cartographic design considerations operative in Frank H. Galbraith’s 1897 railway mail service training maps. Galbraith’s maps make extensive use of humorous cartouches intended to serve as mnemonic devices for learning railway mail service routes. Poisson and quadrat point pattern analyses are performed on all eight maps in the series to determine whether the mimetic symbols are clustered along the railway mail routes or dispersed throughout the mapped spaces to achieve better graphic balance. Evidence overwhelmingly indicates that the placement of the mnemonic symbols was primarily driven by design considerations. The study therefore proves that it is possible to use cartometric techniques to deconstruct the map document to determine the cartographic design principles operative during the map's construction. 相似文献
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本文根据《国家普通地图集》总设计书的要求,重点探讨了该图集总体色标的设计原则、制印工艺方案及质量检测方法。实验结果证明:新设计的色标及制印工艺,具有科学性强、通用性好及新颖不俗的特点,受到地图专家们的一致好评。 相似文献
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A scale‐independent database that allows derived maps to be dynamically updated from a centrally maintained data source is an appealing alternative to traditional map revision techniques, which by today's standards are costly and inefficient. This paper presents a dynamic spatial updating model that supports automated updating of non‐standard maps in a scale‐independent database‐centric map production environment. Maps derived from the database are not separate data sets, but rather active views of the database. Each derived map is displayed in a unique way by implementing cartographic operations at the map level. While the operations applied require user involvement for strategic cartographic decisions, and algorithmic initiation and control, the technique allows geographic data to be processed cartographically without affecting the geometric integrity of the database. Each time a derived map is opened it retrieves the spatial data (and updates) from the database and applies the unique cartographic representation methods that persist on the individual derived maps. Database updates are automatically triggered to cartographic products, as process dependent updates, according to their individual product‐specific behaviour. This paper investigates product‐specific behaviour (product multiplicities) and the cartographic processing requirements to support dynamic spatial updating techniques in an object‐oriented map publishing environment. These techniques are implemented in an off‐the‐shelf software environment using ArcGIS. 相似文献
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《制图学和地理信息科学》2013,40(4):231-241
This paper proposes a methodology to assess gradation as a cartographic tool for communicating information in area-class maps. The communication model is used as a theoretical foundation, suggesting distinction between errors that occur in encoding and decoding of geographic information. The proposed methodology begins with the determination of a target level of encoding error. Map alternatives are constrained to achieve this target, with gradation considered as one variable in the map production process. The result is a series of maps of equal encoding accuracy but varying in the degree of gradation represented. The individual maps of the series can then be evaluated in terms of decoding accuracy. The methodology is demonstrated by producing a series of alternative forest region maps of New York, Pennsylvania, and New Jersey based on U.S. Forest Service data on tree genus distributions. The series ranges from a 4-class graded area-class map to a 13-class crisp map. The results show gradation to be a viable alternative to the proliferation of map classes as a means of cartographic communication. 相似文献
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Mapmaking has become widespread through the Internet, resulting in a wide range of cartographic quality. To achieve better quality, mapmaking needs tools and online services for intuitive and efficient on-demand mapping. A project team at IGN, the French National Mapping Agency, is working on producing a digital cartographic model (DCM) from various existing databases and maps on which such tools and services are based. This DCM ranges from detailed topographic maps to small general road maps. GeoServer Web Map Service capabilities were used extensively to produce quality maps with various legends. Special care was taken to make a default legend suitable for customer data overlays, both on-screen and on paper. Web-based interface prototypes were built to guide users in choosing colors and creating their own original map legends. Users can also rely on a growing catalog of harmonious color palettes and map samples as sources of inspiration. 相似文献
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针对地图制图中色彩选择较为困难的问题,该文收集国内外优秀地图、地图集、著作等上成功的设色方案,提取大量地图色彩样本。利用核密度估计方法,分析各类地图的常用色域区间,作为地图配色时的基色调。根据大量的地图色彩样本,利用定量的数学方法以及数据挖掘方法,探索地图色域特征分布规律。最后以收集的人口地图和环保地图颜色样本为例进行实验分析,对比证明本文方法能够很好地缩小地图色域选择区间,方便制图者根据地图种类选择颜色。 相似文献
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Václav Čada 《The Cartographic journal》2017,54(2):126-138
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《The Cartographic journal》2013,50(4):343-359
AbstractWhen one thinks of a map depicting London, generally the image that appears is that of the map designed by Henry (Harry) Beck (1902–1974). It has become a design icon despite the fact that it eschews topography (other than the River Thames) and focuses on the simplified depiction of the topology of the Underground rail network. Beck’s map, designed in 1931, and first made available to London commuters in 1933, has become the image of the geography of London and, generally, the mental map that defines how London ‘works’. Station names have become synonymous with the above-ground landscape and the network is such that most of London’s landmarks can be readily located through the map. Navigating between them is a simple process and while the city above is a socio-economic and cultural soup, the simplicity of the map brings a sense of order, structure and sensibility. It is a perfect counterpoint to the chaos at street level. In cartographic terms, Beck’s map works and marries form with function perfectly. It retains the status of ‘the’ map of London and manages to simplify the network, be harmonious, coherent, balanced and all with minimal topographic distortion. The symbols are clear and well crafted; the composition and layout, though somewhat challenged by network changes since 1933, remains useful; and the design has remained relatively unchanged over the last 80 years which creates stability in appearance and breeds confidence in its use. However, this paper asserts that Beck’s map is over-used in myriad ways beyond the reason for its invention. The effect of such abuse has perhaps been to dilute its own place in cartographic history. There have been many official iterations that have not always successfully married Beck’s design ideas with network changes; other metro maps have often tried to imitate but with mediocre success; and the map is perpetually used as a template for mimics and alternatives. The map has become a model for parody which we assert is bad for the map and potentially damaging for cartography. 相似文献
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《制图学和地理信息科学》2013,40(1):11-19
Statistical maps are now produced in greater numbers and by persons in a wider range of disciplines than ever before. It is unfortunate that this increased production has not been accompanied by an improvement in map quality. All too frequently, contemporary mapmakers evidence a lack of understanding of the primary function of statistical maps, the symbolic language of mapping, and the effect that data manipulation plays in map communication. Coupled with these deficiencies there is a general lack of appreciation of the basic elements of graphic design. Furthermore, the expanded use of the computer in mapmaking seems to be related to and may even foster low quality since programmers are generally untutored in cartographic design and communication. 相似文献
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《制图学和地理信息科学》2013,40(4):221-229
Predictions of the 1960s about the computer's potential to change cartography are finally being fulfilled. Dynamic maps for vehicle navigation, interactive cartographic/statistical tools, and map animation are being investigated actively. As these new environments for mapping become available, we must reevaluate past questions about transformations from reality to data and data to map. In this paper, we consider these transformation questions in the context of statistical map animation. The issues discussed were raised in producing a “map movie” depicting the spread of acquired immune deficiency syndrome (AIDS) over time. Jenks' data model concept is used as the basis for a typology of data models representing phenomena typically depicted by enumeration unit data. The typology is then used to evaluate symbolization decisions for AIDS incidence maps. Implications for symbol selection imposed by dynamic rather than static maps are considered, as are technical issues involved in producing the animation on a microcomputer platform. A hybrid symbolization method that we have termed the “chorodot” is suggested as a way to meet the constraints on symbolization imposed by animation and to represent the appropriate data model for AIDS incidence. 相似文献
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文中分析总结了地图表达形式、价值能力、评价标准、设计者和使用者相互关系以及符号认知规律等的历史演变,提出在当今的全球网络时代,地图学理论工作者和地图系统研发者有责任重新定义地图的范畴并采用可用性作为地图的评价标准。就地图科学的发展趋势而言,作者以为3维仿真虚拟地理环境的普及给地图学提供了新的生长点,而正在兴起的3维非仿真虚拟地理环境将进一步保持和发扬传统地图的科学价值并使可视化技术走向可视化学。 相似文献