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88 results for “polygon”
Polygonal Axe
Polygonal axe from Lofta parish, Småland. Polygonal axes were ceremonial axes associated with the Funnel Beaker Culture. The appear during the Early Neolithic,c:a 4000-3300 BC. This specimen i rather large, measuring more than 20 cm in length. It has a weathered surface which have originally been either polished or finely hammered. http://historiska.se/upptack-historien/object/1227381 Kiriakos Forozidis 3D-teknik Xenter Tumba, 3D-skanning Source: Objaverse 1.0 / Sketchfab
ATSDR Hazardous Waste Site Polygon Data with CIESIN Modifications, Version 2
The Agency for Toxic Substances and Disease Registry (ATSDR) Hazardous Waste Site Polygon Data with CIESIN Modifications, Version 2 is a database providing georeferenced data for 1,572 National Priorities List (NPL) Superfund sites. These were selected from the larger set of the ATSDR Hazardous Waste Site Polygon Data, Version 2 data set with polygons from May 26, 2010. The modified data set contains only sites that have been proposed, currently on, or deleted from the final NPL as of October 25, 2013. Of the 2,080 ATSDR polygons from 2010, 1,575 were NPL sites but three sites were excluded - 2 in the Virgin Islands and 1 in Guam. This data set is modified by the Columbia University Center for International Earth Science Information Network (CIESIN). The modified polygon database includes all the attributes for these NPL sites provided in the ATSDR GRASP Hazardous Waste Site Polygon database and selected attributes from the EPA List 9 Active CERCLIS sites and SCAP 12 NPL sites databases. These polygons represent sites considered for cleanup under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA or Superfund). The Geospatial Research, Analysis, and Services Program (GRASP, Division of Health Studies, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention) has created site boundary data using the best available information for those sites where health assessments or consultations have been requested.
Global Urban Polygons and Points Dataset (GUPPD), Version 1
The Global Urban Polygons and Points Dataset (GUPPD), Version 1 is a global data set of 123,034 urban settlements with place names and population for the years 1975-2030 in five-year increments. The data set builds on and expands the European Commission, Joint Research Centre's (JRC) 2015 Global Human Settlement (GHS) Urban Centre Database (UCDB). The JRC Settlement Model (GHS-SMOD) data set includes a hierarchy of urban settlements, from urban centre (level 30), to dense urban cluster (level 23), to semi-dense urban cluster (level 22). The UCDB only includes level 30, whereas the GUPPDv1 adds levels 23 and 22, and uses open data sources to both check and validate the names that JRC assigned to its UCDB polygons and to label the newly added settlements. The methodology described in the documentation was able to consistently label a greater percentage of UCDB polygons than were previously labeled by JRC.
West Africa Coastal Vulnerability Mapping: Mangrove Forests Distribution, 2000 Polygon
The West Africa Coastal Vulnerability Mapping: Mangrove Forests Distribution, 2000 Polygon data set was derived from the 30m resolution NASA Socioeconomic Data and Applications Center (SEDAC) Global Mangrove Forests Distribution, 2000 raster data set. It represents the distribution of mangrove forests within 200 kilometers of the coast. The global raster data set is a compilation of the extent of mangrove forests from the Global Land Survey and the Landsat archive with hybrid supervised and unsupervised digital image classification techniques.
ATSDR Hazardous Waste Site Polygon Data, Version 2
The Agency for Toxic Substances and Disease Registry (ATSDR) Hazardous Waste Site Polygon Data, Version 2 consists of 2,080 polygons for selected hazardous waste sites that were compiled on May 26, 2010. Most polygons represent sites considered for cleanup under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA or Superfund). Typical sites are either on the EPA National Priorities List (NPL) or are being considered for inclusion on the NPL. The hazardous waste site boundaries maintained by the Geospatial Research, Analysis, and Services Program (GRASP, Division of Health Studies, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention) contain NPL and non-NPL hazardous waste site boundaries for which health assessments or consultations have been requested.
Permafrost, palsas and frost-crack polygons, Salluit, Quebec, Canada, Version 1
This dataset includes temperature conditions for ice-wedge cracking, Salluit, northern Quebec. Air temperature, soil temperature, wind speed and direction, July 1989 through April 1991 (not continuous record.) Temperature inside data logger, resistance values along cracking detection circuit, July 1989 through August 1991 (not continuous record.) Data are presented on the CAPS Version 1.0 CD-ROM, June 1998. See also GGD360 and GGD361 for other data available from Centre d'Etudes Nordiques climatological research station network.
Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extent Polygons, Revision 02
The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extent Polygons, Revision 02 is an update to Revision 01, which included new settlements and represented the first time that SEDAC released polygons (in Esri shapefile format) with the settlement name (or name of the largest city in the case of multi-city agglomerations). The shapefile consists of polygons defined by the extent of the nighttime lights and approximated urban extents (circles) based on buffered settlement points. Revision 01 also included new urban extents identified from multiple sources and corrected georeferencing for some settlements (see separate documentation for Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Settlement Points, Revision 01 for the data and methods). Revision 01 was produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with CUNY Institute for Demographic Research (CIDR). Revision 02 was produced by CIESIN.
Forest Disturbance Polygons containing Dieback and Clearcuts at Five Locations in Germany
<p>The Geopackages contain polygonized data representing observations from airborne digital orthophotos (DOP) for the 9 classes described below, mainly focussing on forest disturbance. The five Geopackages represent areas between 2*2km and 4*4km in Rhineland-Palatinate (RLP), Northrhine-Westphalia (NRW), Saxony (SAX), Thuringia (THU) and Brandenburg (BB).</p> <p> </p> <p>Observation dates based on the following DOP’s for each AOI (available online for free):</p> <ul> <li> <p>RLP: September 6th/7th, 2021</p> </li> <li> <p>NRW: June 14th, 2021</p> </li> <li> <p>BB: June 18th, 2022</p> </li> <li> <p>THU: June 15th/19th, 2022</p> </li> <li> <p>SAX: June 3rd, 2022</p> </li> </ul> <p> </p> <p>Geopackages contain the following classes in the field „dmg_cat“:</p> <ul> <li> <p>class 1: dead coniferous tree</p> </li> <li> <p>class 2: dead broadleaved tree</p> </li> <li> <p>class 3: dead tree (unclear tree type)</p> </li> <li> <p>class 4: planned to represent „thinning“, but not used; coded as class 6 if observed</p> </li> <li> <p>class 5: infrastructure/gravel road/road/building/timber piles/arable land/meadow/grassland/etc. (used to mask out non-forested area)</p> </li> <li> <p>class 6: clear-cut/harvest, including lying deadwood and bare soil that was not visible in the preceeding DOP (presumably a thinning operation or cleared tree after dieback)</p> </li> <li> <p>class 7: apparent re-growth, e.g. re-planting after clear-cut</p> </li> <li> <p>class 8: vegetated, non-forested non-disturbance area within forest patch, e.g. glade</p> </li> <li> <p>class 9: bare soil (no disturbance area)</p> </li> </ul> <p> </p> <p>The orthoimages of the observation date were compared to previous orthoimages to determine if a potential clearcut, for instance, is actually a glade or bare ground. This is to try to ensure that the disturbance actually happened in the up to 4 years preceeding the respective observation.</p> <p> </p> <p>CRS: EPSG:3035</p> <p> </p> <p>In case this dataset is used in your publication, please cite this repository.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.