Purpose This paper aims to present the authors’ attempts to evaluate the access to archival maps available in digital libraries. Its aim was to pinpoint the factors determining the effectiveness of access to old maps and to evaluate which Polish libraries provide resources in such a way as to give the users the best chance of finding the materials necessary for their research. Design/methodology/approach The presented research focussed on archival documents from academic libraries accessible from the Polish Digital Libraries Federation and available from Europeana Collections. The evaluation criteria were established along with features that determine the level of difficulty of access to data describing archival documents. The research took into account the way of recording the data about archival documents in metadata. The authors have also analysed the quantity of available resources and the consistency of metadata record. Findings The results of the research have demonstrated that one-third of the analysed libraries deserve a positive evaluation. The digital library of the Warsaw University and the Jagiellonian Digital Library received the best scores in terms of the description of archival documents. Considering the number of resources, the Jagiellonian Digital Library and the Digital Library of the University of Wrocław are positively distinguished. Originality/value The method of evaluating the access to archival maps has been developed. The criteria and features necessary for this evaluation and the way of their interpretation have also been defined. The future goals leading to the improvement of the access to the archival maps have been also presented.
The necessity to divide the analysed area into basic elements, regardless of the administrative division (cells or pixels, also called primary fields), and use them to prepare thematic maps emerged as early as by the end of the 19th century. The automation of map development processes brought a new approach to the function of cells, which made them a carrier that facilitates information processing, and presenting the results of analyses in the form of studies that very often function only in spatial information systems or on the Internet. Cells are currently used to conduct a series of advanced spatial analyses in practically all areas of application. The aim of the presented research was to analyse the influence of the shape and size of cells on the terrain classification results for the purposes of developing military passability maps. The research used the automatic terrain classification method, based on calculating the index of passability, calculated for cells of square, triangular, and hexagonal shapes and of different sizes, ranging from 100 m to 10,000 m. Indices of passability were determined basing on parameters derived from land cover elements that exist in the area of each of the adopted cells. Because of the fact that passability maps are mainly developed for military purposes, the study used a standardised vector spatial database-VMap Level 2. The studies have demonstrated that, if the surface areas of cells are identical, their shapes do not have a significant influence on the resulting passability map. The authors have also determined the sizes of cells that should be adopted for developing passability maps on various levels of accuracy, and, as a consequence, for being used on various levels of command of military troops.
This paper presents a systematic literature review that reflects the current state of research in the field of algorithms and models for map generalization, the existing solutions for automatic (tactile) map generation, as well as good practices for designing spatial databases for the purposes of automatic map development. A total number of over 500 primary studies were screened in order to identify the most relevant research on automatic (tactile) map generation from the last decade. The reviewed papers revealed many existing solutions in the field of automatic map production, as well as algorithms (e.g., Douglas–Peucker, Visvalingam–Whyatt) and models (e.g., GAEL, CartACom) for data generalization that might be used to transform traditional spatial data into the haptic form, suitable for blind and visually impaired people. However, it turns out that a comprehensive solution for automatic tactile map generation does not exist.
Purposes This paper aims to present an objective summary of the current state of research concerning the evaluation criteria of map metadata. The undertaken research identifies which authors and to what extent the discussed issues related to the metadata of objects collected in digital libraries, with particular emphasis on cartographic materials. Design/methodology/approach Independent reviewers analysed the basic articles data. Selected papers were subject to quality assessment, based on the full text and 12 questions. Finally, iterative backward reference search was conducted. Findings The results demonstrate that there are no universal criteria for metadata evaluation. There are no works that would assess the metadata of cartographic studies, although numerous publications point to the need for this type of work. Practical implications Metadata evaluation allows users to obtain knowledge whether objects found in the library are relevant for their needs. Originality/value The criteria and methods most often used for assessing metadata quality which can be adopted to map metadata evaluation have been identified. The authors identified the existing research gaps and proved that there is a need for research contributions in the field of evaluating map metadata.
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