997 resultados para Tile Map Service
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Project no. MO-011.
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Project no. MO-011.
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Mode of access: Internet.
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Mode of access: Internet.
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"Supercedes the September 1944 edition."
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Mode of access: Internet.
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"Based on maps published by the Survey of India. The 1 : 63.360 scale series ... was employed for most of Burma, and where this series was not available, the 1 : 253,440 scale series was used."
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Mode of access: Internet.
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Includes bibliography.
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Mode of access: Internet.
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Mode of access: Internet.
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In many Environmental Information Systems the actual observations arise from a discrete monitoring network which might be rather heterogeneous in both location and types of measurements made. In this paper we describe the architecture and infrastructure for a system, developed as part of the EU FP6 funded INTAMAP project, to provide a service oriented solution that allows the construction of an interoperable, automatic, interpolation system. This system will be based on the Open Geospatial Consortium’s Web Feature Service (WFS) standard. The essence of our approach is to extend the GML3.1 observation feature to include information about the sensor using SensorML, and to further extend this to incorporate observation error characteristics. Our extended WFS will accept observations, and will store them in a database. The observations will be passed to our R-based interpolation server, which will use a range of methods, including a novel sparse, sequential kriging method (only briefly described here) to produce an internal representation of the interpolated field resulting from the observations currently uploaded to the system. The extended WFS will then accept queries, such as ‘What is the probability distribution of the desired variable at a given point’, ‘What is the mean value over a given region’, or ‘What is the probability of exceeding a certain threshold at a given location’. To support information-rich transfer of complex and uncertain predictions we are developing schema to represent probabilistic results in a GML3.1 (object-property) style. The system will also offer more easily accessible Web Map Service and Web Coverage Service interfaces to allow users to access the system at the level of complexity they require for their specific application. Such a system will offer a very valuable contribution to the next generation of Environmental Information Systems in the context of real time mapping for monitoring and security, particularly for systems that employ a service oriented architecture.
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Com o crescimento da Internet como plataforma global para partilha de informação, cresceu também a diversidade de tipologias de informação a ser partilhada e consultada, nomeadamente informação geográfica. Neste âmbito surge como preocupação a interoperabilidade entre sistemas permitindo que sistemas diferentes possam “comunicar”, partilhando informações e recursos. O presente trabalho propõe-se recolher informação sobre a utilização das normas de interoperabilidade do Open Geospatial Consortium (OGC) na Administração Pública em Portugal, permitindo analisar e tirar conclusões relativamente a esta temática, tendo também em conta o seu enquadramento legal nacional.
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La falta de mapas exactos de la República de El Salvador presentó un obstáculo considerable para las labores de investigación del Instituto Tropical. Para crear esta base necesaria, el Instituto imprimió los mapas planimétricos en escala de 1:40.000, levantados por Prieto y Parker, apoyados en una triangulación radial, y basados en las fotos aéreas (Army Map Service USA) del año 1949. La elaboración de estos mapas fué encargada por el Departamento del Censo (Ministerio de Economía). El trabajo todavía no está completamente terminado porque falta poner los nombres geográficos de la mayor parte de la República. Pero aún así, este mapa prestará suma utilidad porque representa el primer mapa exactamente elaborado de El Salvador. Es tarea grata para el Instituto Tropical expresar sus agradecimientos sinceros a la estrecha colaboración prestada por el señor director del Departamento del Censo, Coronel Jorge Tenorio, y por los señores ingenieros Prieto y Parker.
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Scale 1:50,000.