<b>spatstat</b>: An<i>R</i>Package for Analyzing Spatial Point Patterns

Baddeley, Adrian; Turner, Rolf

doi:10.18637/jss.v012.i06

Cited by 2,032 publications

(1,665 citation statements)

References 68 publications

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“…The bandwidths and the extraction maps were produced using the packages sm (Bowman and Azzalini, 2007) and spatstat (Baddeley and Turner, 2005) in R 2.9 software (www.R-project.org) respectively. The extraction maps obtained were represented using ArcGIS 9.2.…”

Section: Spatial Explorationmentioning

confidence: 99%

Spatial analysis ofLeishmania donovaniexposure in humans and domestic animals in a recent kala azar focus in Nepal

et al. 2010

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S U M M A R YVisceral leishmaniasis (VL) is a major public health problem in the Indian subcontinent where the Leishmania donovani transmission cycle is described as anthroponotic. However, the role of animals (in particular domestic animals) in the persistence and expansion of VL is still a matter of debate. We combined Direct Agglutination Test (DAT) results in humans and domestic animals with Geographic Information System technology (i.e. extraction maps and scan statistic) to evaluate the exposure to L. donovani on these 2 populations in a recent VL focus in Nepal. A Poisson regression model was used to assess the risk of infection in humans associated with, among other factors, the proportion of DAT-positive animals in the proximities of the household. The serological results showed that both humans and domestic animals were exposed to L. donovani. DAT-positive animals and humans were spatially clustered. The presence of serologically positive goats (IRR=9 . 71), past VL cases (IRR=2 . 62) and the proximity to a forest island dividing the study area (IRR=3 . 67) increased the risk of being DAT-positive in humans. Even if they are not a reservoir, domestic animals, and specially goats, may play a role in the distribution of L. donovani, in particular in this new VL focus.

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Section: Spatial Explorationmentioning

confidence: 99%

Spatial analysis ofLeishmania donovaniexposure in humans and domestic animals in a recent kala azar focus in Nepal

et al. 2010

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“…Los hallazgos que no se han documentado tridimensionalmente en la excavación (los que proceden de las labores de criba y lavado de sedimentos) se generan dentro del volumen de la UE correspondiente con una rutina en la que intervienen las librerías foreign (R Core Team, 2016), spatstat (Baddeley & Turner, 2005) envolvente mínima 3D de los datos tomados en la cueva, se generan de forma aleatoria, tantos puntos como hallazgos, que luego se introducen de manera definitiva en la base de datos. Esta tarea es quizás la más novedosa metodológicamente hablando, porque en un paso previo se genera el volumen de cada una de las UUEE y posteriormente se generan los hallazgos que se han recuperado en cada una de ellas, siendo también posible introducir los volúmenes de las UUEE generados previamente.…”

Section: Metodologíaunclassified

Entorno 3D para el análisis y la recreación virtual de las actuaciones arqueológicas en Cueva de la Cocina (Dos Aguas, Valencia, España)

Castillo

Nicolau

Puchol

et al. 2017

Virtual archaeol. rev.

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Abstract:In this paper we present our procedure for digitising fieldwork information on the fly (data management), and its combination with the virtual reconstruction of the stratigraphy (virtualisation), of the Cueva de la Cocina site in Dos Aguas (Valencia, Spain). The main tool for the Geographic Information System (GIS) implementation has been OpenJUMP, whilst for the three-dimensional (3D) recreation of the cave virtual environment MeshLab, ParaView, CloudCompare and R open software have been used. According to the data recovered during the two last field seasons at the cave -2015 and 2016-, we present the current state of the stratigraphy virtualisation in the excavated sectors. We also provide not only a general view of the cave, but also different points of view to incorporate distinct geomatics tools into archaeological research. The computer treatment of the data collected in the field provides a better understanding of their spatial relations; which in turn facilitates its analysis and interpretation as well as the realisation of virtual profiles. In the same way, the differences in the frequency of materials belonging to adjacent and/or superimposed stratigraphical units, as well as the total quantities, volumetry and density of the artefacts, with respect to their own stratigraphical unit, or even the whole excavated area, can also be analysed. The combination of both approaches -data management and virtualisation-allows us to integrate geographic information technologies in the daily life of the Mesolithic and Neolithic communities, of which the virtual reconstruction of the different test pits carried out in Cueva de la Cocina constitutes a perfect example.Key words: 3D reconstruction, GIS tools, archaeological fieldwork, Mesolithic, Neolithic, Cocina Cave Resumen:Con este trabajo pretendemos presentar nuestro procedimiento de digitalización de información de campo (gestión de datos) y su imbricación en la reconstrucción estratigráfica virtual (virtualización) de la Cueva de la Cocina (Dos Aguas, Valencia, España). La herramienta principal para la implementación del Sistema de Información Geográfica (SIG) ha sido OpenJUMP, mientras que para la recreación tridimensional (3D) del entorno virtual de la cueva se han utilizado MeshLab, ParaView, CloudCompare y R. De acuerdo con los datos recuperados durante las excavaciones de los últimos años en la cueva -2015 y 2016-, se presenta el estado actual de la virtualización de la estratigrafía en los sectores excavados. Del mismo modo ofrecemos no sólo una visión general de la cueva, sino también diferentes puntos de vista para incorporar distintas herramientas geomáticas en la investigación arqueológica. El tratamiento informático de los datos recogidos en el campo proporciona una mejor comprensión de las relaciones espaciales entre ellos; lo que a su vez facilita su análisis e interpretación así como la realización de cortes virtuales. De la misma manera, se pueden analizar las diferencias en la frecuencia de los materiales que pertenecen a unidades estra...

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“…Here, = 30 represents a good value to compromise between simulation accuracy and computation load [9]. Carlo sampling trials [7]. This mean upper bound can under-estimate, because it is not an absolute upper bound, i.e.…”

Section: (12)mentioning

confidence: 99%

Multipath Interference Reduction In Wireless Radio Systems Using Two-Branch Selection Diversity

2017

IJASRE

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spatstat: AnRPackage for Analyzing Spatial Point Patterns

Cited by 2,032 publications

References 68 publications

Spatial analysis ofLeishmania donovaniexposure in humans and domestic animals in a recent kala azar focus in Nepal

Spatial analysis ofLeishmania donovaniexposure in humans and domestic animals in a recent kala azar focus in Nepal

Entorno 3D para el análisis y la recreación virtual de las actuaciones arqueológicas en Cueva de la Cocina (Dos Aguas, Valencia, España)

Multipath Interference Reduction In Wireless Radio Systems Using Two-Branch Selection Diversity

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