Methodology of Evaluation and Correction of Geometric Data Topology in Qgis Software

Kukulska, Anita; Salata, Tomasz; Cegielska, Katarzyna; Szylar, Marta

doi:10.15576/asp.fc/2018.17.1.125

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…To ensure a routable network, all POIs needed to be snapped properly to the network, something which was not the case in the initial data set. Therefore, they were matched via QGIS snapping tools to the closest vertices (nodes, junctions, road bends) of the street network [ 81 ]. Using the street network data, proximities based on the shortest possible path were measured.…”

Section: Methodsmentioning

confidence: 99%

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

Peters

Ratz

Wichmann

et al. 2022

IJERPH

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Research is still lacking regarding the question as to how programs to promote healthy ageing should be organized in order to increase acceptance and thus effectiveness. For older adults, ecological factors, such as the physical distance to program sites, might predict participation and retention. Thus, the key aim of this analysis was to examine these factors in a physical activity intervention trial. Adults (N = 8299) aged 65 to 75 years were invited to participate and n = 589 participants were randomly assigned to one of two intervention groups with 10 weeks of physical activity home practice and exercise classes or a wait-list control group. Response, participation, and dropout data were compared regarding ecological, individual, and study-related variables. Kaplan–Meier curves and Cox regression models were used to determine predictors of dropout. In total, 405 participants completed the study. Weekly class attendance rates were examined regarding significant weather conditions and holiday periods. The highest rates of nonresponse were observed in districts with very high neighborhood levels of socioeconomic status. In this study, ecological factors did not appear to be significant predictors of dropout, whereas certain individual and study-related variables were predictive. Future studies should consider these factors during program planning to mobilize and keep subjects in the program.

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Section: Methodsmentioning

confidence: 99%

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

Peters

Ratz

Wichmann

et al. 2022

IJERPH

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“…For this process, we created a topology in a feature dataset with the Veredas polygons and used it to identify the topology errors based on the rules created, i.e., excluding every sliver polygon and overlapping polygons. We then merged the overlapping polygon into another polygon and we revalidated the topology to ensure that the edition was successful (adapted to ArcGIS from Kukulska et al 2018). This processing was performed due to the limitation of accuracy from the CAR dataset, since each landowner is required to upload his Veredas polygons into the government system, which might use different ways to delimitate this type of vegetation, e.g.…”

Section: Data Collection and Processingmentioning

confidence: 99%

The role of topography, climate, soil and the surrounding matrix in the distribution of Veredas wetlands in central Brazil

Gonçalves

Cardoso

Oliveira

et al. 2022

Wetlands Ecol Manage

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Wetlands are among the most important ecosystems in the world in terms of endemic biodiversity, carbon storage and hydrological process. Veredas wetlands are distributed across the Brazilian savanna (i.e. Cerrado biome) and are permanently protected areas. Veredas wetlands have a hydromorphic soil, providing water to the main rivers of central Brazil and allowing the occurrence of several endemic species of plants and animals. Although recent studies on biotic and abiotic characteristics have been conducted in several areas of Veredas, the studies are local and there is a lack of information about large-scale patterns. Here we used remote sensing data to explore the role of climate, soil, topography and surrounding matrix explaining Veredas occurrence in the Triângulo Mineiro and Alto Paranaíba (TMAP), a mesoregion of the State of Minas Gerais, Southeastern Brazil. Veredas were more frequent in the western region of TMAP, in areas with lower altitudes, temperature and precipitation seasonality, soil cation exchange capacity, silt and sand content, and slope. Moreover, farming was the most frequent land use in areas surrounding Veredas. Veredas are associated with recharging of the water table and water flow that maintains rivers in the Upper Paraná River water basin. We trust the present assessment will be of help for the development of conservation strategies and biodiversity studies. Graphical abstract Research questions, data processing, statistical analysis and illustration of the outputs generated.

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“…To ensure a routable network all POIs needed to be snapped properly to the network, which was not the case in the initial data set. Therefore, they were matched via QGIS snapping tools to the closest vertices (nodes, junctions, road bends) of the street network [83]. Using the street network data, proximities based on the shortest possible path were measured.…”

Section: Proximities To Interventions Sitesmentioning

confidence: 99%

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

Peters¹,

Ratz²,

Wichmann³

et al. 2022

Preprint

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Research is still lacking regarding the question as to how programs to promote healthy aging should be organized in order to increase acceptance and thus effectiveness. For older adults, ecological factors, such as physical distance to program sites, might predict participation and retention. Thus, the key aim of this analysis was to examine these factors in a physical activity intervention trial. Adults (N=8,299) aged 65 to 75 years were invited to participate and n=589 participants were randomly assigned to one of two intervention groups with 10 weeks of physical activity home practice and exercise classes or a wait-list control group. Response, participation, and dropout data were compared regarding ecological, individual, and study-related variables. Kaplan-Meier curves and Cox regression models were used to determine predictors of dropout. In total, 405 participants completed the study. Weekly class attendance rates were examined regarding significant weather conditions and holiday periods. The highest rates of nonresponse were observed in districts with very high neighborhood levels of socioeconomic status. In this study, ecological factors did not appear to be significant predictors of dropout, whereas certain individual and study-related variables were predictive. Future studies should consider these factors during program planning to mobilize and keep subjects in the program.

show abstract

Methodology of Evaluation and Correction of Geometric Data Topology in Qgis Software

Cited by 7 publications

References 6 publications

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

The role of topography, climate, soil and the surrounding matrix in the distribution of Veredas wetlands in central Brazil

Ecological Predictors of Older Adults’ Participation and Retention in a Physical Activity Intervention

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