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  Subjects -> GEOGRAPHY (Total: 493 journals)
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KN : Journal of Cartography and Geographic Information
Number of Followers: 1  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2524-4957 - ISSN (Online) 2524-4965
Published by Springer-Verlag Homepage  [2468 journals]
  • Dark-is-More Bias Also in Dark Mode' Perception of Colours in
           Choropleth Maps in Dark Mode

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      Abstract: Abstract Dark mode is an increasingly common design option in which a dark screen background is used with light-coloured text and graphic elements. This option is, therefore, also relevant for the design of screen maps. This article examines the question of whether a “light-is-more bias” also applies in dark mode for the display of choropleth maps, analogous to the “dark-is-more bias” with light backgrounds (i.e. that dark colours are associated with greater attribute values). However, the results of an online study with 214 people show that the dark-is-more bias is still clearly the most frequently used strategy. This frequency is slightly lower compared to the light mode, and it is depending on the specific colour scheme for the dark mode and on user’s expertise. The study results also allow general design recommendations for dark-mode colour schemes for maps.
      PubDate: 2024-06-12
       
  • Sind Sie auch schon 60 Jahre Mitglied in der DGfK'

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      PubDate: 2024-06-09
       
  • Correction: Standard Points and Lines in Map Projections

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      PubDate: 2024-05-31
       
  • Standard Points and Lines in Map Projections

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      Abstract: Abstract In order to be able to read the information a map conveys, we must be familiar with the distribution and size of the inevitable distortions. Otherwise, our knowledge will be deficient or even wrong. The paper first defines the terms standard point and standard line. The standard point is the point where the inevitable distortions caused by mapping are equal to zero. This definition can be visually interpreted as a Tissot distortion ellipse that becomes a unit circle. After that, it is natural to say that the standard line is composed of standard points. A large number of examples show that the map projection does not have to have standard points at all, but that it can have one such point, two such points or a whole line of standard points. In the latter case, it can be parallels, meridians or lines approximately parallel to the image of the middle meridian, as is the case with the Gauss–Krüger or transverse Mercator projection. In this article, formulas are derived by which the reader can mathematically determine standard points or lines, if such exist. The derivation of new mathematical formulas in the paper can be helpful to cartographers who develop a mapping application and may need to select a map projection for their application. The map projection may not be common and therefore the details of the projection’s standard point(s) or line(s) are not well documented. These equations then could be used in writing the code that mathematically derives the location of a standard point(s) or line(s) for a map projection and reports that location to the developer or the end user.
      PubDate: 2024-04-23
      DOI: 10.1007/s42489-024-00168-8
       
  • Visualizing the Influence of New Public Transport Infrastructure on Travel
           Times

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      Abstract: Abstract Due to the global climate change and increasing traffic volumes in cities, a shift from individual to public and multimodal transport is aspired. Travel time is one of the most important aspects for many people when choosing their mode of transportation. This leads to the requirement that changes in travel times have to be considered when planning new public transport infrastructure. This research paper presents and compares different techniques for visualizing the impact of new lines in existing public transport networks on travel times. The general approach of simulating timetable data and calculating intermodal travel times considering public transport and walking is being applied to two current infrastructure projects in the city of Bonn and the surrounding region. The created maps generally aim to visualize the spread in travel times between existing and extended transportation networks discretized by different spatial units such as rectangles or postal code areas. In comparison to other common methods which typically require two maps for two different scenarios (e.g. in case of isochrones), our approach gives the opportunity to combine all relevant information within one map. It is also shown how to apply bivariate choropleth maps for displaying travel times and how to visualize improvements in the accessibility of multiple target points of interest at once.
      PubDate: 2024-04-22
      DOI: 10.1007/s42489-024-00167-9
       
  • Neues Logo, Und Mehr: Was 2024 Alles Passieren Soll

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      PubDate: 2024-03-26
      DOI: 10.1007/s42489-024-00166-w
       
  • A Multifaceted Start to the New Volume

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      PubDate: 2024-03-20
      DOI: 10.1007/s42489-024-00165-x
       
  • What Did the Cultural Landscape on Bornholm Look Like in the
           Mid-Eighteenth Century' An Analysis of Hammer’s Map

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      Abstract: Abstract The island of Bornholm, located in the Baltic Sea, has undergone a strong landscape change over the last 250 years, which has had an impact on the landscape form and functions (agriculture, recreation, biodiversity). In this paper, Hammer's historical map series from the 1750s is processed and evaluated using GIS technology. The results are presented and mapped according to the individual land use types and cultural landscape elements. For example, 250 years ago there was a very large proportion of extensively used heathland and very little forest, which is exactly the opposite today. In addition, there were a large number of smaller landscape elements, which together made for a diversely structured, agriculturally used landscape. This also includes the many smaller standing waters as well as wetlands and bogs. The large number of defensive installations recorded, such as redoubts, batteries, forts and signal points, clearly shows the military importance of the map and the significance of such installations for the security of the island at that time. The high number of windmills and water mills, the agricultural farms and the churches were also recorded. The resulting maps, which are also available digitally and interactively to the public, show the significant landscape change, which is placed in a historical context and discussed with its current effects, e.g. on biodiversity.
      PubDate: 2024-03-06
      DOI: 10.1007/s42489-024-00161-1
       
  • Correction to: Traces of the Common Origin of Carte Pisane, Cortona Chart,
           and Pietro Vesconte’s Charts

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      PubDate: 2024-02-27
      DOI: 10.1007/s42489-024-00164-y
       
  • Task-Oriented and Change-Preserving Data Classification for Multi-Temporal
           Choropleth Maps

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      Abstract: Abstract Series or animations of classified choropleth maps are an important form of reproducing multi-temporal, cardinally scaled data sets, especially in media. However, there are problems with such representations that are not taken into account by the known methods of data classification (such as equidistant grouping or quantiles), and therefore lead to visualizations that are not sufficiently suitable for use. On the one hand, different questions and change analysis tasks are not explicitly considered in the process of making these maps. In the following, typical change tasks are singled out (i.e. show absolute differences, absolute percentage changes, positive changes and deviations from the trend) and the corresponding metrics for quantitative description are proposed. On the other hand, there are no measures in the usual procedures to avoid the loss of significant changes after classification (i.e. the regions belong to the same class). In the following, a procedure is therefore proposed that begins with rules for assigning value differences to class differences (e.g. based on statistical significance). Based on this, a preservation measure is defined that describes the success of obtaining the desired class differences after applying the classification. This measure can also be used to guide a new classification procedure. Using two multi-temporal data sets, the effects of the developed measures and methods are demonstrated both numerically and visually in corresponding choropleth maps.
      PubDate: 2024-02-19
      DOI: 10.1007/s42489-024-00163-z
       
  • Development of a New Approach for a Digital, Cartographic Rock and Relief
           Representation

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      Abstract: Abstract This paper presents a new approach to digital rock and relief representation. A prerequisite for the method was its applicability for different scales and thus different resolutions of the underlying terrain models. A further requirement was its suitability for different rock types. It must also take into account the rock surfaces that have become ice-free due to glacier retreat and be easy to integrate into the map in the event of an update. The relief representation follows the principle that the terrain should be reproduced as naturally as possible to provide the map user with the best possible orientation in the terrain. The approach requires a very good knowledge of the terrain as well as a certain artistic talent to achieve an appealing, natural color scheme. Through the process of color manipulation from the four-color set, it is also possible, in addition to the summer representation from the data collected with remote sensing methods, to generate winter representations for e.g. ski tourers. The use of established, automatic procedures considerably reduces the workload for the cartographer and also enables simple integration of corrections and changes to the landscape, e.g. due to glacial retreat and landslides, and can be applied to large map series due to its reproducibility.
      PubDate: 2024-02-16
      DOI: 10.1007/s42489-024-00162-0
       
  • Generative Text-to-Image Diffusion for Automated Map Production Based on
           Geosocial Media Data

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      Abstract: Abstract The state of generative AI has taken a leap forward with the availability of open source diffusion models. Here, we demonstrate an integrated workflow that uses text-to-image stable diffusion at its core to automatically generate icon maps such as for the area of the Großer Garten, a tourist hotspot in Dresden, Germany. The workflow is based on the aggregation of geosocial media data from Twitter, Flickr, Instagram and iNaturalist. This data are used to create diffusion prompts to account for the collective attribution of meaning and importance by the population in map generation. Specifically, we contribute methods for simplifying the variety of contexts communicated on social media through spatial clustering and semantic filtering for use in prompts, and then demonstrate how this human-contributed baseline data can be used in prompt engineering to automatically generate icon maps. Replacing labels on maps with expressive graphics has the general advantage of reaching a broader audience, such as children and other illiterate groups. For example, the resulting maps can be used to inform tourists of all backgrounds about important activities, points of interest, and landmarks without the need for translation. Several challenges are identified and possible future optimizations are described for different steps of the process. The code and data are fully provided and shared in several Jupyter notebooks, allowing for transparent replication of the workflow and adoption to other domains or datasets.
      PubDate: 2024-02-13
      DOI: 10.1007/s42489-024-00159-9
       
  • Effectiveness Study on the Correct Interpretation of Point Symbols Using
           the Online Survey Method on the Example of the Witcher 3: Wild Hunt

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      Abstract: Abstract The main purpose of the article was to examine the ability to indicate the correct meaning of point symbols in The Witcher 3: Wild Hunt without using the map legend by people participating in the study. The authors decided to check the relationship between gamers and non-gamers of video games in “The Witcher” series and due to the weekly time of playing video games. The Witcher 3: Wild Hunt is a game produced in 2015 by Polish developer CD Projekt Red. It is an open-world RPG game. The game’s universe is based on the Middle Ages, adding elements of mythology and fantasy. The map included in the game is characterized by a large number of point symbols. By means of internal selection and pre-survey, ten symbols were selected whose meaning could pose the greatest problems in interpretation. The main part of the study was conducted in the form of an online survey using the Google Forms platform. Dissemination of the survey on various social media forums allowed to collect responses from various people around the world. After the collection and selection of responses, statistical tests were conducted to study the effectiveness in interpreting the meaning of the point symbols. It was shown that there was a correlation in indicating the correct meaning of the symbol by dividing the respondents into gamers or non-gamers of The Witcher series and due to the weekly time of playing video games. The authors drew attention to the need to continue research in the field of map symbology in video games.
      PubDate: 2024-01-26
      DOI: 10.1007/s42489-023-00158-2
       
  • Digitisation and Georeferencing of an Oversized Historical Map of the
           Bailiwick of Neuland (Winsen/Luhe) using Structure-from-Motion (SFM)
           Photogrammetry

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      Abstract: Abstract The study of historical maps has gained significant importance in recent years due to their ability to shed light on past geographical and topographic landscapes since they serve as crucial sources for understanding past conditions. They not only provide insights into the geography and topography during the time they were created but also allow for studying long-term changes over time. In this study, an oversized historical map of the Bailiwick of Neuland from the years 1780 to 1790 was discovered in the archives of the municipal building office in Winsen an der Luhe, Germany. The map, measuring approximately 5 m × 2 m, was digitised by photogrammetric methods and subsequently georeferenced. The process involved photographing the map with two different cameras and two UAV systems at the Geodetic Laboratory of HafenCity University Hamburg. This allowed to generate a high-resolution orthophoto from each data set. The resulting orthophoto achieved a pixel size of 0.2 mm, ensuring a detailed representation of the map. To ensure accuracy, the best photo block was scaled in a bundle block adjustment using ground control points with an accuracy of 1 mm and scale bars with an accuracy of 0.1 mm. Georeferencing of the historical map was conducted using current digital orthophotos of Lower Saxony with a resolution of 20 cm. A third-degree polynomial transformation was applied during georeferencing, resulting in mean residuals of 2.5 m at the ground control points. This process ensured that the historical map was accurately aligned with the current digital orthophotos, allowing for precise spatial referencing.
      PubDate: 2024-01-20
      DOI: 10.1007/s42489-023-00157-3
       
  • Traces of the Common Origin of Carte Pisane, Cortona Chart, and Pietro
           Vesconte’s Charts

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      Abstract: Abstract Anonymous Carte Pisane (c. 1275) and Cortona chart (c. 1300), as well as Pietro Vesconte's charts, made in 1311 and 1313, which represent some of the earliest known portolan charts, were cartometrically analysed to examine the geometric similarities between their coastal renderings. The research results show that not only the majority of their territorial coverage was drawn very similarly to each other but also that certain parts of the coastline are nearly identical between all the examined charts. Also, the magnitude and orientation of displacement vectors of residuals revealed that the Mediterranean and Black Sea areas on charts contain seven subsections which are on average, twice as accurate in comparison to the same area treated as a whole. The fundamental conclusion is that there is a high probability that the coastline renderings on the earliest known portolan charts are, actually, more or less skilfully made copies of the same source material used as a graphic template. The hypothetical source might have been an atlas whose origins date back to before the Middle Ages, containing charts whose extents were, perhaps, similar to the extents of detected subsections, which medieval cartographers were not able to assemble correctly due to their ignorance of map projections.
      PubDate: 2023-12-28
      DOI: 10.1007/s42489-023-00154-6
       
  • Where Is the Current Research on Theoretical Cartography'

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      PubDate: 2023-12-14
      DOI: 10.1007/s42489-023-00156-4
       
  • Nehmen Sie es auch mal persönlich

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      PubDate: 2023-12-13
      DOI: 10.1007/s42489-023-00155-5
       
  • An Appraisal of Water Quality using Geostatistics: A Case Study in Bankura
           Sub-division, West Bengal (India)

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      Abstract: Abstract For irrigation purposes, groundwater quality should be regularly checked so that the danger of geochemical pollutants can be decreased using the suitable treatment procedure. As an outcome, the present work focused on shaping the suitability of groundwater collected from the Bankura sub-division in West Bengal, India, for irrigation purposes using several water quality indicators. To assess the groundwater quality, 59 samples were taken from various locations around the research region during the period between 2019 and 2020, and parameters such as pH, EC, TH, alkalinity (HCO3−), calcium (Ca +), magnesium (Mg + 2), sodium (Na +), chloride (Cl−), and potassium (K) were assessed. The permeability index (PI), magnesium ratio (MR), Kelley's Index (KI), and sodium percentage (Na%) were calculated using the aforementioned factors. Geostatistical modelling (Empirical Bayesian Kriging) has been used to evaluate the geographical distribution of groundwater quality parameters. For the majority of the index’s values, the exponential semivariogram model has been certified as the best-fitting model. Additionally, the water quality index (WQI) is used to represent total water quality in a single term and determine whether water is fit for human consumption or not. The study area's WQI values range from 14.6 to 46. 16.39% indicates good water, 20.54% indicates bad water, 51.17% indicates very poor water, and 11.90% indicates water unfit for agriculture. The current dataset revealed the use of water quality indices that could be useful to policymakers in terms of proper management, treatment, and long-term social progress.
      PubDate: 2023-12-12
      DOI: 10.1007/s42489-023-00152-8
       
  • Activator: An Immersive Virtual Reality Serious Game Platform for
           Highlighting Ancient Greek Civilization

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      Abstract: Abstract Virtual reality (VR) became, in the last few years, an important pillar for promoting cultural heritage (CH) through serious games or virtual guided tours. A lot of museums, institutes, and galleries tend to integrate new technologies like VR for promotion purposes. The major objective of this research is to analyze the Activator project through three immersive scenarios, developed in collaboration with the Center for Research and Technology Hellas (CERTH) and the “Noesis” Science Center and Technology Museum, and deal with three different regions of Ancient Greece. This study introduces the serious games VR platform Activator, whose purpose is to provide a realistic Query ID="Q2" Text="Article title: Kindly provide German article." VR experience coupled with a motion platform, to highlight a few significant moments of the ancient Greek civilization and let the user interact with key objects through a set of serious games in virtual environments. In particular, three immersive educational scenarios are implemented in the form of serious games, including the Siege of Rhodes, the Antikythera Wreck, and the First Settlement of Europe, which represents the volcanic eruption at Thera (Santorini). In addition to the implementation details and technologies utilized, the paper presents some preliminary evaluation results with real users, during its initial pilot phase that is currently carried out at the premises of the Noesis Science Center & Technology Museum, in Thessaloniki, Greece. The Activator platform, which has been developed in the context of a collaborative Greek national research project, will be available for public use after the end of the project.
      PubDate: 2023-12-02
      DOI: 10.1007/s42489-023-00148-4
       
  • Adequate Minority Place-Name Representation on Topographic Maps

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      Abstract: Abstract Besides representation of their place names in public space (in the linguistic landscape) on town signs, road signs, public buildings, etc., finding their names also on topographic maps, notably official topographic maps, is very important for autochthonous linguistic minorities residing in a place already for many generations. They regard this as recognizing their presence and their share in the place. It also means supporting their emotional ties to the place and is, thus, also in the interest of the majority since it strengthens the minority’s loyalty to the majority and their common political entity. Based on Ferjan Ormeling’s seminal work (Ormeling in Minority Toponyms on Maps. The Rendering of Linguistic Minority Toponyms on Topographic Maps of Western Europe (= Utrechtse geografische studies, 30). Utrecht, 1983), later literature and the author’s (together with Přemysl Mácha et al.) recent comparative study of southern Carinthia (Austria) and the Těšín/Cieszyn region (Czechia) (Jordan et al. 2021), the paper endeavors to substantiate that the following are criteria of an adequate minority place-name representation on topographic maps: Share of minority place names in local use represented on the map Consistency of minority place-name representation across feature categories Consistency of minority place-name representation across map scales Visual representation of minority in relation to majority place names
      PubDate: 2023-10-05
      DOI: 10.1007/s42489-023-00150-w
       
 
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  Subjects -> GEOGRAPHY (Total: 493 journals)
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