scholarly journals DATABASE TRANSFORMATION, CADASTRE AUTOMATIC DATA PROCESSING IN QGIS AND IMPLEMENTATION IN WEB GIS

2019 ◽  
Vol XLII-4/W14 ◽  
pp. 175-178
Author(s):  
H. Ostadabbas ◽  
H. Weippert ◽  
F.-J. Behr
Keyword(s):  
Open Source ◽  
Spatial Information ◽  
Web Gis ◽  
Land Values ◽  
Federal Republic Of Germany ◽  
Automatic Data ◽  
Open Source Gis ◽  
Data Layers ◽  
Geocoded Data ◽  
The Web

<p><strong>Abstract.</strong> On the judicial basis of § 196 Baugesetzbuch (BauGB, 2018) every municipality in the Federal Republic of Germany must publish standard land values in €/m<sup>2</sup> for its whole district area in a biennial cycle. The standard land values have to be derived comprehensively for different land use categories within this district. With the help of Geographic Information Systems (GIS) all the necessary data for the derivation of the standard land values can be analyzed. This data consists of cadastral information (ALKIS) (AdV, 2008) for each municipality district like streets, buildings, land parcels, areas of application for special building law as well as geocoded data about purchasing prices within the district’s real estate transactions. The following work contributes to both requirements, the statutory determination of the standard land values answering the legal necessity and the setting up of the generated geo data in the Web according to the transparency demanded by the European INSPIRE (Infrastructure for Spatial Information in Europe) directive. This report describes the implementation of the automated process of the setup of the relevant data layers based on ALKIS data in an Open Source GIS (QGIS) using SQL and Python scripts. The standard land values are visualized and presented in a Web GIS. After the evaluation of different alternatives, QGIS Server and Lizmap, an Open Source QGIS Web Client, were used for the web based presentation and accordingly configured.</p>

scholarly journals GDIS, a global dataset of geocoded disaster locations

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Elisabeth L. Rosvold ◽  
Halvard Buhaug
Keyword(s):  
Open Source ◽  
Natural Hazards ◽  
Spatial Information ◽  
Data Sources ◽  
Geographic Data ◽  
Spatial Geometry ◽  
Emergency Events ◽  
Geocoded Data ◽  
First Time ◽  
Empirical Analyses

AbstractThis article presents a new open source extension to the Emergency Events Database (EM-DAT) that allows researchers, for the first time, to explore and make use of subnational, geocoded data on major disasters triggered by natural hazards. The Geocoded Disasters (GDIS) dataset provides spatial geometry in the form of GIS polygons and centroid latitude and longitude coordinates for each administrative entity listed as a disaster location in the EM-DAT database. In total, GDIS contains spatial information on 39,953 locations for 9,924 unique disasters occurring worldwide between 1960 and 2018. The dataset facilitates connecting the EM-DAT database to other geographic data sources on the subnational level to enable rigorous empirical analyses of disaster determinants and impacts.

scholarly journals The “Country of cities” web-GIS: development experience and approaches used in creating a history-oriented geoportal

2021 ◽  
Vol 27 (4) ◽  
pp. 482-494
Author(s):  
Artur Gafurov ◽  
Bulat Usmanov ◽  
Oleg Yermolayev ◽  
Airat Gubaidullin ◽  
Petr Khomyakov ◽  
...  
Keyword(s):  
Spatial Information ◽  
Three Dimensional ◽  
Archaeological Site ◽  
Web Gis ◽  
Risk Map ◽  
Web Resource ◽  
Aerial Vehicle ◽  
User Friendly ◽  
The Web ◽  
Convenient Access

Providing convenient access to spatial information for multiple users is a big challenge. To solve this problem, researchers present the results of their research on thematic geoportals—geographic information systems (GIS) located on the Web. The main functionality of such web-GIS, in addition to directly displaying interactive spatial information, is the possibility of making custom searches, measuring lengths and areas, and providing access to related multimedia materials. Archaeological geoportals, unlike other thematic GIS, require special approaches to the implementation, as there is a necessity to provide convenient access not only to spatial information, but also a gallery of multimedia materials, as well as detailed descriptions. This paper describes the approach to the development of cartographic web-resource “Country of Cities” which provides access to the results of interdisciplinary research of Volga Bulgarian settlements. for user-friendly access to both cartographic and descriptive materials, it was decided to divide the geoinformation and analytical component into two separate but interconnected portals within one web resource. Web-GIS is based on the leaflet library and provides interactive access, besides the information about each ancient settlement itself, to the series of analytical maps—risk map of the development of exogenous processes, risk map of the destruction of ancient settlements, their present state, and many others. The main graphic and descriptive materials are presented on the web portal, where a special page was created for each ancient settlement with a descriptive block, a gallery with images of the settlement from an unmanned aerial vehicle, thematic and historical maps, as well as an interactive three-dimensional textured model of the corresponding archaeological site.

TCloud

2018 ◽  
pp. 116-144 ◽  
Author(s):  
Rabindra K. Barik ◽  
Rakesh Kumar Lenka ◽  
Harishchandra Dubey ◽  
Kunal Mankodiya
Keyword(s):  
Cloud Computing ◽  
Open Source ◽  
Decision Maker ◽  
Spatial Data ◽  
Spatial Information ◽  
Overlay Analysis ◽  
Computing Environment ◽  
Cloud Computing Environment ◽  
Open Source Gis ◽  
The Temple

This chapter proposes and develops a cloud-computing-based SDI model named as TCloud for sharing, analysis, and processing of spatial data particularly in the Temple City of India, Bhubaneswar. The main purpose of TCloud is to integrate all the spatial information such as tourism sites which include various temples, mosques, churches, monuments, lakes, mountains, rivers, forests, etc. TCloud can help the decision maker or planner or common users to get enough information for their further research and studies. It has used open source GIS quantum GIS for the development of spatial database whereas QGIS plugin has been linked with quantum GIS for invoking cloud computing environment. It has also discussed the various spatial overlay analysis in TCloud environment.

TCloud

2019 ◽  
pp. 935-958
Author(s):  
Rabindra K. Barik ◽  
Rakesh Kumar Lenka ◽  
Harishchandra Dubey ◽  
Kunal Mankodiya
Keyword(s):  
Cloud Computing ◽  
Open Source ◽  
Decision Maker ◽  
Spatial Data ◽  
Spatial Information ◽  
Overlay Analysis ◽  
Computing Environment ◽  
Cloud Computing Environment ◽  
Open Source Gis ◽  
The Temple

This chapter proposes and develops a cloud-computing-based SDI model named as TCloud for sharing, analysis, and processing of spatial data particularly in the Temple City of India, Bhubaneswar. The main purpose of TCloud is to integrate all the spatial information such as tourism sites which include various temples, mosques, churches, monuments, lakes, mountains, rivers, forests, etc. TCloud can help the decision maker or planner or common users to get enough information for their further research and studies. It has used open source GIS quantum GIS for the development of spatial database whereas QGIS plugin has been linked with quantum GIS for invoking cloud computing environment. It has also discussed the various spatial overlay analysis in TCloud environment.

scholarly journals Relief visualization techniques using free and open source GIS tools

2018 ◽  
Vol 50 (2) ◽  
pp. 61-71 ◽  
Author(s):  
Jordan Tzvetkov
Keyword(s):  
Open Source ◽  
The Other ◽  
Advantages And Disadvantages ◽  
Gis Tools ◽  
Open Source Gis ◽  
The One ◽  
Data Layers ◽  
Visualization Techniques ◽  
Criteria For Selection ◽  
Selection Of

Abstract The aim of the article is to present different relief visualization techniques created using only free and open source GIS tools, such as QGIS and RVT. The criteria for selection of these techniques are that they should be, on the one hand, simple and fast for implementation and on the other suitable for multiple visualization purposes. Here we present several techniques which combine hillshade with other relief data layers derived from DEM and an assessment of advantages and disadvantages of their visualization.

scholarly journals Development of a Web GIS for small-scale detection and analysis of COVID-19 (SARS-CoV-2) cases based on volunteered geographic information for the city of Cologne, Germany, in July/August 2020

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Fabian Schmidt ◽  
Arne Dröge-Rothaar ◽  
Andreas Rienow
Keyword(s):  
Open Source ◽  
Data Protection ◽  
Spatial Information ◽  
Residential Building ◽  
Volunteered Geographic Information ◽  
Legal Aspects ◽  
Geographic Information ◽  
Added Value ◽  
Web Gis ◽  
Small Scale

Abstract Background Various applications have been developed worldwide to contain and to combat the coronavirus disease-19 (COVID-19) pandemic. In this context, spatial information is always of great significance. The aim of this study is to describe the development of a Web GIS based on open source products for the collection and analysis of COVID-19 cases and its feasibility in terms of technical implementation and data protection. Methods With the help of this Web GIS, data on this issue were collected voluntarily from the Cologne area. Using house perimeters as a data basis, it was possible to check, in conjunction with the Official Topographic Cartographic Information System object type catalog, whether buildings with certain functions, for example residential building with trade and services, have been visited more frequently by infected persons than other types of buildings. In this context, data protection and ethical and legal issues were considered. Results The results of this study show that the development of a Web GIS for the generation and evaluation of volunteered geographic information (VGI) with the help of open source software is possible. Furthermore, there are numerous data protection and ethical and legal aspects to consider, which not only affect VGI per se but also affect IT security. Conclusions From a data protection perspective, more attention needs to be paid to the intervention and post-processing of data. In addition, official data must always be used as a reference for the actual spatial consideration of the number of infections. However, VGI provides added value at a small-scale level, so that valid information can also be reliably derived in the context of health issues. The creation of guidelines for the consideration of data protection, ethical aspects, and legal requirements in the context of VGI-based applications must also be considered. Trial registration The article does not report the results of a health care intervention for human participants

scholarly journals THE ROLE OF OPEN-SOURCE PYTHON PACKAGE GEOSERVER-REST IN WEB-GIS DEVELOPMENT

2021 ◽  
Vol XLVI-4/W2-2021 ◽  
pp. 91-96
Author(s):  
T. B. Kshetri ◽  
A. Chaksan ◽  
S. Sharma
Keyword(s):  
Open Source ◽  
Geospatial Data ◽  
Web Gis ◽  
Style File ◽  
Web Mapping ◽  
Python Package ◽  
The Web ◽  
Gis Platform

Abstract. This work describes geoserver-rest, an open-source python package that can manage the geospatial data in a geoserver which is helpful for uploading, editing, and deleting the raster/vector layers from various sources. It is also useful for generating the style/legend from the uploaded geospatial data. Thus, generated legend can be used for visualization of maps in the web-GIS platform. The package is successfully used to build the web-GIS portal for agricultural datasets of Afghanistan, which has around 6000 map layers. The main benefit that geoserver-rest provides to this project is the ability to upload the data to the geoserver and create the styles file dynamically. Thus, created style file are directly linked to the corresponding layer and provide the Web Mapping Service (WMS) standard and visualize in an interactive way.

Sign in / Sign up

Export Citation Format

Share Document