SPACeMAP is a remote-sensing data portal system owned by LAPAN used to distribute mosaic data of Medium-Resolution to Very-High-Resolution for Provincial Governments. The frequently arising problem ...is that mosaic images have very large data size, especially for SPOT-6/7 mosaic images. The increasing number of data and users may affect the data loading process on the portal so that mosaic data compression can be considered. SPACeMAP has the Image Compressor feature using the Tile and Line algorithms with a compression ratio (target rate) recommended for optics (15 to 20). This study aims to determine the best algorithm and target rate to get compressed mosaic SPOT-6/7 imagery. The comparison method was done qualitatively through visual comparison and quantitatively by using Compression Ratio (CR), Bit per Pixel (BPP), and Peak Signal to Noise Ratio (PSNR). Results of the experiment show that, quantitatively, both Tile and Line algorithms give a different performance, depends on the zoom level and land cover characteristics. In terms of the qualitative result, the Tile algorithm gives better overall results compare to the Line algorithm. Quantitatively, both algorithms show good performance in the homogenous area. The target rate difference on the testing range does not affect process duration, nevertheless, the Line algorithm has a long process duration compare to the Tile algorithm. However, compression mosaics with lower or higher resolution remote sensing data may provide different results. Hence, this need be addressed on further studies.
Currently developed urban greenery management systems (UGMS) are limited in scope and profiled towards solving particular issues. Moreover, due to the lack of common standards and solutions, UGMS ...implementation requires considerable financial effort, which is only feasible for wealthy urban centres. There is a need for universal, cost-effective technological solutions which could constitute a common urban green infrastructure at all country administrative levels.
This research aims to present a technological architecture of a universal UGMS capable of data integration and analysis at both local and central administrative levels, and present its prospective data management functionality through a proof-of-concept implementation by the example of Olsztyn city, located in the EU Member State of Poland.
Empirical study has been conducted by means of qualitative assessment through state-of-the-art analysis of green information systems, national spatial data infrastructure (NSDI) including land administration system (called Integrated Real Estate Information System) and Geoportal, development and testing of a proof-of-concept solution through management, analysis and visualizations of green areas, objects and related phenomena; quantitative assessment has been performed through in-situ inventory of urban greenery in the City of Olsztyn, Poland.
The presented study resulted in a concept UGMS architecture based on existing NSDI. The projected functionality of the designed UGMS has been implemented and tested on a real-world urban greenery database. The research thesis, that open databases integrated with national SDI data are sufficient to create a uniform and complete nationwide UGMS was confirmed.
•The Urban Greenery Management System (UGMS) concept of technological architecture has been developed.•UGMS concept uses existing National Spatial Data Infrastructure (NSDI) and open spatial data.•Open data sources combined with NSDI have formed a complete nationwide UGMS.•The UGMS concept has been implemented and tested on a real-world urban greenery database.
With the development of geographic simulation methods in recent decades, a great deal of resources have accumulated to support their implementation. These resources can be divided into model ...resources for analyzing or predicting geographic phenomena or processes, data resources for representing the characteristics of real or simulated environment, and computing resources for supporting simulation tasks. These resources are characterized by geospatial distribution and are difficult to discover and reuse. OpenGMS has carried out a series of fundamental research to sharing and collaborating distributed resources on the web. On this basis, this paper presents the concept of the OpenGMS open portal. The portal adopts FAIR principles and supports resources sharing and reuse to facilitate collaboration and exchange between resource contributors and users. This paper takes applications of the portal in resource sharing and reuse case and online training courses as examples to illustrate how the portal can bridge contributors and users of resources.
•The portal adopts FAIR principles and is integrated into OpenGMS platform.•The functional design for resource contributors and users is presented.•The portal attracts many users and amasses lots of geographic simulation resources.•The portal assists in model sharing and reuse among researchers in cyberspace.
Digital transformation is shaping our lives and altering planning. Digitalization is closely linked to smart governance, through which administrative units such as cities and regions increasingly ...offer digital services related to spatial planning. However, the increasing digitalization of spatial planning has received little attention in academic planning literature, and few studies have analysed how digitalization affects planning practice. The aim of this study was to help fill this gap by developing an analytical framework based on efficiency, transparency and innovation, to explore how digital plan data affect land-use planning. The framework was applied in a multi-case study analysis of Austria, Germany and Switzerland. In this study, which is one of the first to shed empirical light on the digital transformation of land-use planning, we found changes in planning practice mainly in terms of efficiency and transparency, less in terms of innovation. We have identified a great need for further research to attend critically to digital transformation of planning in order to optimize the benefits for planning practice and to avoid an unreflective shift towards technocratic planning practices.
Samarinda is the capital city of East Kalimantan. As the capital city on the second largest island in Indonesia, Samarinda is home to 834,824 residents. A problem that often arises in densely ...populated cities is fire. In Samarinda, from 2015 to 2022, there have been at least 2,349 fire incidents with a burned area of 8,090,755 m2 so this city has become one of the cities that most often experience fires on Kalimantan. Several supporting facilities and infrastructure owned by the Samarinda Fire and Rescue Agency, such as hydrants and fire posts have been expanded in number. However, most of these supporting facilities have not been integrated with a good coordinate system. So, when a fire occurs, it takes time to identify the location of these vital facilities. As an effort to solve this problem, the Geological Engineering Study Program, Faculty of Engineering, Mulawarman University and Samarinda State Polytechnic of Agriculture held community engagement activities in the form of geographic information system (GIS)-based application training for Samarinda Fire and Rescue Agency officers. This program aims to provide additional competencies needed by field officers in integrating data on facilities and infrastructure such as hydrants and fire posts into the Samarinda geoportal system. Based on the results of this activity, Samarinda Fire and Rescue Agency officers are skilled in operating applications that can integrate coordinate-based facilities and infrastructure data into a geoportal system, including measuring the burned areas accurately and precisely so that fire incidents in Samarinda can be minimized.
Since the early days, cadastral data represent the geographic extent of the past, current, and future rights and interests in real property. Thus, these data are extremely important for the proper ...development of statehood and society. The article analyses the process of formation of the real estate cadastre in two countries – Poland and Ukraine – from the time of its establishment to the present. Both countries were in the past (and Ukraine still is) victims of various historical events that deprived them of statehood, stability and opportunities for development; therefore, it affected the development of the cadastre and its accessibility to all stakeholders. The authors attempt to answer the question of if and how geographic location and historical conditions can affect the quality and availability of open cadastral data (OCD). After all, our perception of reality is a direct result of processes originating in history. This paper contains comparisons between a post-Soviet (Ukraine) and a post-communist country (Poland) and their path from early cadastral maps to OCD.
Evaluating the use of old cadastral maps Femenia-Ribera, Carmen; Mora-Navarro, Gaspar; Pérez, Luis J. Santos
Land use policy,
March 2022, 2022-03-00, 20220301, Letnik:
114
Journal Article
Recenzirano
Odprti dostop
The old cadastral maps of the Spanish General Directorate for Cadastre (DGC) have always been in great demand. It was decided in 2012 to make an initial inventory of these maps with the type of ...information available, physical location, and condition. Subsequently, to evaluate their possible use, the inventory was examined to investigate whether these maps could be geographically referenced and made available on a geoportal. Several years later, it was determined that the inventory needed to be updated with a series of improvements (expanding the fields so that they become clearer, homogeneous, and more easily handled by software). A questionnaire was issued to technical specialists on property boundaries. As a principal conclusion we can highlight that the use of old cadastral maps in Spain is of great importance. The information on these maps is widely demanded by technical and legal experts who consider that an update and revision of the DGC inventory is essential. It is crucial that old cadastral maps are digitised and made available online, preferably free of charge and through an easy-to-use geoportal. The information on these maps helps to resolve property boundary disputes and has many other uses. Investment in the economic and human resources needed to preserve and publish these maps is essential given their great value.
•Inventory of available cadastral maps.•Survey on the use of old cadastral maps.•Old cadastral maps used to help resolve property boundary disputes.•Old maps in Spain.•Maps accessible through a geoportal.
One of the current trends in archaeological geoinformatics in Russia is the creation of web mapping portals that integrate spatial and thematic data on the given areas of concentration of ...archaeological sites. As part of the study of the life support system of the ancient population of the Tura and Pyshma interfl uves (Tyumen region) developed a geoportal on the basis of free and open source soft ware. The server part developed on the basis of GeoServer, provides storage of the information and authorized access to it. Vector data is stored in PostgreSQL database management system using PostGIS add-in. Raster data is stored on the server as GeoTIFF and MrSID fi les. Th e technologies used in the development of the client web-application allow using it in modern web-browsers without installing additional soft ware on the user’s devices. Th e geoportal user interface is an interactive map of spatial data layers as well as map control elements. Th e general control elements include the zoom buttons, the scale setting on the available layer extents, the zoom slider, the scale bar, the geographic coordinates fi eld of the cursor installation, the button enabling the attribute information display mode. Th ematic content of the geoportal includes space images with medium (10 m) and extra high (up to 0.3 m) spatial resolution, AW3D relief model (25 m), topographic maps, UAV images of certain areas (orthophotomaps and DEM), vectorlayers of archaeological sites, hydrography, landscapes restoration, results of archaeological sites borders mapping using GPS-receivers, as well as the results of bathymetry survey. Th e layer of archaeological site (366 objects) contains attributive information including type, period, description, dating. Geoportal is a convenient tool for management and visualization of the accumulated information arrays for specialists without extensive knowledge in cartography and GIS.
There is an increasing interest in the conservation of historical cities since they provide a link to the roots of their communities and bring cultural and economic benefits to their inhabitants. In ...this paper, we present an approach to promote the knowledge of the UNESCO World Heritage city of San Cristóbal de La Laguna in the Canary Islands, Spain. The city was founded in 1496 and has a unique value due to its urban design. In this work, we present a web application that allows a user to locate places and addresses of the current city in its first known map authored by Leonardo Torriani in the 16th century. To build this application we have georeferenced the ancient map in the current cartography. The georeferencing process needs the identification of homologous ground control points in the coordinate systems of both the old map and the current cartography, and the definition of a transform between them. Best results were obtained with the non-parametric natural transform interpolation leading to a global mean error of 4.9 m that reduces to 3.2 m in the historical city centre. To provide a fast response to the user of the web application, a technique to precompute offline the natural transform is presented. The web application has a simple front-end where the user fills the current city address in a form. This activates a query to obtain the geographical coordinates of the address that are transformed to map coordinates using the pre-computed transformation. These map coordinates are used by a map viewer in the front end that locates the user address in the ancient map. To test the performance of the web application, the load of the system has been analysed obtaining a latency of 1.4 s in 50 concurrent users. Results show that the web application provides accurate results in the historical centre while providing satisfactory response times.Highlights:- This study investigates the issue of georeferencing the first historic map (16th century) of San Cristóbal de La Laguna and the possibility to geolocate current city addresses.- By using the natural interpolation method, the georeferencing errors were diminished below 4 m in most of the historic city.- A user-friendly web application has been designed which precisely locates current directions in the old map providing a valuable tool for the promotion of the heritage of the city.
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