100+ datasets found
  1. c

    Predictive soil property map: Silt content

    • s.cnmilf.com
    • res1catalogd-o-tdatad-o-tgov.vcapture.xyz
    • +1more
    Updated Jul 6, 2024
    + more versions
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    U.S. Geological Survey (2024). Predictive soil property map: Silt content [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/predictive-soil-property-map-silt-content
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    Dataset updated
    Jul 6, 2024
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Description

    These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive layer (resdept) and surface rock size and cover. Accuracy and error estimated using a 10-fold cross validation indicated a range of model performances with coefficient of variation (R2) for models ranging from 0.20 to 0.76 with mean of 0.52 and a standard deviation of 0.12. Models of pH, om and ec had the best accuracy (R2 > 0.6). Most texture fractions, CaCO3, and SAR models had R2 values from 0.5-0.6. Models of kwfact, dbovendry, resdept, rock models, gypsum and awc had R2 values from 0.4-0.5 excepting near surface models which tended to perform better. Very fine sands and 200 cm estimates for other models generally performed poorly (R2 from 0.2-0.4), and sample size for the 200 cm models was too low for reliable model building. More than 90% of the soils data used was sampled since 2000, but some older samples are included. Uncertainty estimates were also developed by creating relative prediction intervals, which allow end users to evaluate uncertainty easily.

  2. World Continents

    • hub.arcgis.com
    • pacificgeoportal.com
    • +2more
    Updated May 5, 2022
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    Esri (2022). World Continents [Dataset]. https://hub.arcgis.com/datasets/esri::world-continents/about
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    Dataset updated
    May 5, 2022
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    World,
    Description

    World Continents represents the boundaries for the continents of the world. It provides a basemap layer of the continents, delivering a straightforward method of selecting a small multicountry area for display or study.This layer is best viewed out beyond a scale of 1:3,000,000. The original source was extracted from the ArcWorld Supplement database in 2001 and updated as country boundaries coincident to regional boundaries change. To download the data for this layer as a layer package for use in ArcGIS desktop applications, refer to World Continents.

  3. d

    Predictive soil property map: Gypsum content

    • catalog.data.gov
    • gimi9.com
    • +1more
    Updated Jul 6, 2024
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    U.S. Geological Survey (2024). Predictive soil property map: Gypsum content [Dataset]. https://catalog.data.gov/dataset/predictive-soil-property-map-gypsum-content
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    Dataset updated
    Jul 6, 2024
    Dataset provided by
    U.S. Geological Survey
    Description

    These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive layer (resdept) and surface rock size and cover. Accuracy and error estimated using a 10-fold cross validation indicated a range of model performances with coefficient of variation (R2) for models ranging from 0.20 to 0.76 with mean of 0.52 and a standard deviation of 0.12. Models of pH, om and ec had the best accuracy (R2 > 0.6). Most texture fractions, CaCO3, and SAR models had R2 values from 0.5-0.6. Models of kwfact, dbovendry, resdept, rock models, gypsum and awc had R2 values from 0.4-0.5 excepting near surface models which tended to perform better. Very fine sands and 200 cm estimates for other models generally performed poorly (R2 from 0.2-0.4), and sample size for the 200 cm models was too low for reliable model building. More than 90% of the soils data used was sampled since 2000, but some older samples are included. Uncertainty estimates were also developed by creating relative prediction intervals, which allow end users to evaluate uncertainty easily.

  4. Human Geography Map

    • esriaustraliahub.com.au
    • noveladata.com
    • +19more
    Updated Feb 2, 2017
    + more versions
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    Esri (2017). Human Geography Map [Dataset]. https://www.esriaustraliahub.com.au/maps/3582b744bba84668b52a16b0b6942544
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    Dataset updated
    Feb 2, 2017
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    Description

    The Human Geography Map (World Edition) web map provides a detailed vector basemap with a monochromatic style and content adjusted to support Human Geography information. Where possible, the map content has been adjusted so that it observes WCAG contrast criteria.This basemap, included in the ArcGIS Living Atlas of the World, uses 3 vector tile layers:Human Geography Label, a label reference layer including cities and communities, countries, administrative units, and at larger scales street names.Human Geography Detail, a detail reference layer including administrative boundaries, roads and highways, and larger bodies of water. This layer is designed to be used with a high degree of transparency so that the detail does not compete with your information. It is set at approximately 50% in this web map, but can be adjusted.Human Geography Base, a simple basemap consisting of land areas in a very light gray only.The vector tile layers in this web map are built using the same data sources used for other Esri Vector Basemaps. For details on data sources contributed by the GIS community, view the map of Community Maps Basemap Contributors. Esri Vector Basemaps are updated monthly.Learn more about this basemap from the cartographic designer in Introducing a Human Geography Basemap.Use this MapThis map is designed to be used as a basemap for overlaying other layers of information or as a stand-alone reference map. You can add layers to this web map and save as your own map. If you like, you can add this web map to a custom basemap gallery for others in your organization to use in creating web maps. If you would like to add this map as a layer in other maps you are creating, you may use the tile layer item referenced in this map.

  5. d

    SMAPVEX08 Vegetation Water Content Map V001

    • datadiscoverystudio.org
    • data.staging.idas-ds1.appdat.jsc.nasa.gov
    • +2more
    Updated Jun 18, 2015
    + more versions
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    (2015). SMAPVEX08 Vegetation Water Content Map V001 [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/046ebd65b9a241dbbde4989111bba73e/html
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    Dataset updated
    Jun 18, 2015
    Area covered
    Description

    The Vegetation Water Content (VWC) map for the Soil Moisture Active Passive Validation Experiment 2008 (SMAPVEX08) was derived by calculating Normalized Difference Water Index (NDWI) from Satellite Pour l'Observation de la Terre-4 (SPOT-4) overpasses on 11 October 2008. In addition, samples from a range of vegetation types were used to compare VWC and NDWI to the satellite imagery.

  6. Esri Imagery Content Web Map for Search and Discovery

    • hub.arcgis.com
    Updated Jan 28, 2016
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    Esri Imagery Virtual Team (2016). Esri Imagery Content Web Map for Search and Discovery [Dataset]. https://hub.arcgis.com/maps/d903b90182624d8b8e6a10ddf61d9954
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    Dataset updated
    Jan 28, 2016
    Dataset provided by
    Esrihttp://esri.com/
    Authors
    Esri Imagery Virtual Team
    Area covered
    Description

    This map features recent high-resolution (1m) aerial imagery for the continental United States made available by the USDA Farm Services Agency. The National Agriculture Imagery Program (NAIP) acquires aerial imagery during the agricultural growing seasons in the continental United States. A primary goal of the NAIP program is to make digital ortho photography available to governmental agencies and the public within a year of acquisition. This image layer provides access to the most recent NAIP imagery for each state and will be updated annually as new imagery is made available. This imagery is published in 4-bands (RGB and Near Infrared), where available, with the option to display the imagery as false color to show the IR band or to display the NDVI (Normalized Difference Vegetation Index) showing relative biomass of an area.This map features the NAIP image layer along with the Imagery with Labels basemap for reference purposes. The NAIP imagery may be more recent in some cases than the current imagery in the World Imagery basemap, so you can use them both for comparison purposes. The map also includes a World Transportation layer than can be turned on at large scales for additional reference information (e.g. street labels).The image layer currently includes NAIP 2010-2014 imagery, having been updated recently to include NAIP 2014 imagery where available. It will be updated with NAIP 2015 imagery as that becomes publicly available.

  7. maps dataset

    • kaggle.com
    zip
    Updated Jan 29, 2020
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    neerajbhat98 (2020). maps dataset [Dataset]. https://www.kaggle.com/datasets/adlteam/maps-dataset
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    zip(250762306 bytes)Available download formats
    Dataset updated
    Jan 29, 2020
    Authors
    neerajbhat98
    Description

    Dataset

    This dataset was created by neerajbhat98

    Contents

  8. Worldwide Geographic Division: Continents and Oceans/Seas Shapefile

    • zenodo.org
    • data.niaid.nih.gov
    bin, png
    Updated Jul 6, 2024
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    Guilherme Mataveli; Guilherme Mataveli (2024). Worldwide Geographic Division: Continents and Oceans/Seas Shapefile [Dataset]. http://doi.org/10.5281/zenodo.10778079
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    png, binAvailable download formats
    Dataset updated
    Jul 6, 2024
    Dataset provided by
    Zenodohttp://zenodo.org/
    Authors
    Guilherme Mataveli; Guilherme Mataveli
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    This shapefile provides a worldwide geographic division by merging the World Continents division proposed by Esri Data and Maps (2024) to the Global Oceans and Seas version 1 division proposed by the Flanders Marine Institute (2021). Though divisions of continents and oceans/seas are available, the combination of both in a single shapefile is scarce.

    The Continents and Oceans/Seas shapefile was carefully processed to remove overlaps between the inputs, and to fill gaps (i.e., areas with no information) by spatially joining these gaps to neighbour polygons. In total, the original world continents input divides land areas into 8 categories (Africa, Antarctica, Asia, Australia, Europe, North America, Oceania, and South America), while the original oceans/seas input divides the oceans/seas into 10 categories (Arctic Ocean, Baltic Sea, Indian Ocean, Mediterranean Region, North Atlantic Ocean, North Pacific Ocean, South Atlantic Ocean, South China and Easter Archipelagic Seas, South Pacific Ocean, and Southern Ocean). Therefore, the resulting world geographic division has 18 possible categories.

    References

    Esri Data and Maps (2024). World Continents. Available online at https://hub.arcgis.com/datasets/esri::world-continents/about. Accessed on 05 March 2024.

    Flanders Marine Institute (2021). Global Oceans and Seas, version 1. Available online at https://www.marineregions.org/. https://doi.org/10.14284/542. Accessed on 04 March 2024.

  9. a

    OpenStreetMap - Natural Features Map

    • hub.arcgis.com
    • goa-state-gis-esriindia1.hub.arcgis.com
    • +1more
    Updated Mar 25, 2022
    + more versions
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    GIS Online (2022). OpenStreetMap - Natural Features Map [Dataset]. https://hub.arcgis.com/maps/79f5e865b1fd464184c372d96621e2dc
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    Dataset updated
    Mar 25, 2022
    Dataset authored and provided by
    GIS Online
    Area covered
    Description

    This web map shows natural features point and polygon layers from OSM (OpenStreetMap) in India.OSM is a collaborative, open project to create a freely available and editable map of the world. Geographic information about streets, rivers, borders, points of interest and areas are collected worldwide and stored in a freely accessible database. Everyone can participate and contribute to OSM. The geographic information available on OSM relies entirely on volunteers or contributors.The attributes are given below:BeachCave EntranceCliffGlacierPeakSpringTreeVolcanoThese map layers are offered by Esri India Content. The content team updates the map layers quarterly. If you have any questions or comments, please let us know via content@esri.in.

  10. l

    USNG Map Book Template for ArcGIS Pro

    • visionzero.geohub.lacity.org
    • opendata.rcmrd.org
    • +3more
    Updated May 25, 2018
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    NAPSG Foundation (2018). USNG Map Book Template for ArcGIS Pro [Dataset]. https://visionzero.geohub.lacity.org/content/f93ebd6933cb4679a62ce4f71a2a9615
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    Dataset updated
    May 25, 2018
    Dataset authored and provided by
    NAPSG Foundation
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Contents: This is an ArcGIS Pro zip file that you can download and use for creating map books based on United States National Grid (USNG). It contains a geodatabase, layouts, and tasks designed to teach you how to create a basic map book.Version 1.0.0 Uploaded on May 24th and created with ArcGIS Pro 2.1.3 - Please see the README below before getting started!Updated to 1.1.0 on August 20thUpdated to 1.2.0 on September 7thUpdated to 2.0.0 on October 12thUpdate to 2.1.0 on December 29thBack to 1.2.0 due to breaking changes in the templateBack to 1.0.0 due to breaking changes in the template as of June 11th 2019Updated to 2.1.1 on October 8th 2019Audience: GIS Professionals and new users of ArcGIS Pro who support Public Safety agencies with map books. If you are looking for apps that can be used by any public safety professional, see the USNG Lookup Viewer.Purpose: To teach you how to make a map book with critical infrastructure and a basemap, based on USNG. You NEED to follow the steps in the task and not try to take shortcuts the first time you use this task in order to receive the full benefits. Background: This ArcGIS Pro template is meant to be a starting point for your map book projects and is based on best practices by the USNG National Implementation Center (TUNIC) at Delta State University and is hosted by the NAPSG Foundation. This does not replace previous templates created in ArcMap, but is a new experimental approach to making map books. We will continue to refine this template and work with other organizations to make improvements over time. So please send us your feedback admin@publicsafetygis.org and comments below. Instructions: Download the zip file by clicking on the thumbnail or the Download button.Unzip the file to an appropriate location on your computer (C:\Users\YourUsername\Documents\ArcGIS\Projects is a common location for ArcGIS Pro Projects).Open the USNG Map book Project File (APRX).If the Task is not already open by default, navigate to Catalog > Tasks > and open 'Create a US National Grid Map Book' Follow the instructions! This task will have some automated processes and models that run in the background but you should pay close attention to the instructions so you also learn all of the steps. This will allow you to innovate and customize the template for your own use.FAQsWhat is US National Grid? The US National Grid (USNG) is a point and area reference system that provides for actionable location information in a uniform format. Its use helps achieve consistent situational awareness across all levels of government, disciplines, and threats & hazards – regardless of your role in an incident.One of the key resources NAPSG makes available to support emergency responders is a basic USNG situational awareness application. See the NAPSG Foundation and USNG Center websites for more information.What is an ArcGIS Pro Task? A task is a set of preconfigured steps that guide you and others through a workflow or business process. A task can be used to implement a best-practice workflow, improve the efficiency of a workflow, or create a series of interactive tutorial steps. See "What is a Task?" for more information.Do I need to be proficient in ArcGIS Pro to use this template? We feel that this is a good starting point if you have already taken the ArcGIS Pro QuickStart Tutorials. While the task will automate many steps, you will want to get comfortable with the map layouts and other new features in ArcGIS Pro.Is this template free? This resources is provided at no-cost, but also with no guarantees of quality assurance or support at this time. Can't I just use ArcMap? Ok - here you go. USNG 1:24K Map Template for ArcMapKnown Limitations and BugsZoom To: It appears there may be a bug or limitation with automatically zooming the map to the proper extent, so get comfortable with navigation or zoom to feature via the attribute table.FGDC Compliance: We are seeking feedback from experts in the field to make sure that this meets minimum requirements. At this point in time we do not claim to have any official endorsement of standardization. File Size: Highly detailed basemaps can really add up and contribute to your overall file size, especially over a large area / many pages. Consider making a simple "Basemap" of street centerlines and building footprints.We will do the best we can to address limitations and are very open to feedback!

  11. Human Geography Dark Map

    • noveladata.com
    • coronavirus-resources.esri.com
    • +18more
    Updated May 4, 2017
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    Esri (2017). Human Geography Dark Map [Dataset]. https://www.noveladata.com/maps/4f2e99ba65e34bb8af49733d9778fb8e
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    Dataset updated
    May 4, 2017
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    Description

    The Human Geography Dark Map (World Edition) web map provides a detailed world basemap with a dark monochromatic style and content adjusted to support human geography information. Where possible, the map content has been adjusted so that it observes WCAG contrast criteria.This basemap, included in the ArcGIS Living Atlas of the World, uses 3 vector tile layers:Human Geography Dark Label, a label reference layer including cities and communities, countries, administrative units, and at larger scales street names.Human Geography Dark Detail, a detail reference layer including administrative boundaries, roads and highways, and larger bodies of water. This layer is designed to be used with a high degree of transparency so that the detail does not compete with your information. It is set at approximately 50% in this web map, but can be adjusted.Human Geography Dark Base, a simple basemap consisting of land areas in a very dark gray only.The vector tile layers in this web map are built using the same data sources used for other Esri Vector Basemaps. For details on data sources contributed by the GIS community, view the map of Community Maps Basemap Contributors. Esri Vector Basemaps are updated monthly.Learn more about this basemap from the cartographic designer in A Dark Version of the Human Geography Basemap.Use this MapThis map is designed to be used as a basemap for overlaying other layers of information or as a stand-alone reference map. You can add layers to this web map and save as your own map. If you like, you can add this web map to a custom basemap gallery for others in your organization to use in creating web maps. If you would like to add this map as a layer in other maps you are creating, you may use the tile layers referenced in this map.

  12. Continent Polygons

    • figshare.com
    zip
    Updated Jun 24, 2020
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    Stephanie Shepherd (2020). Continent Polygons [Dataset]. http://doi.org/10.6084/m9.figshare.12555170.v3
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    zipAvailable download formats
    Dataset updated
    Jun 24, 2020
    Dataset provided by
    Figsharehttp://figshare.com/
    Authors
    Stephanie Shepherd
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Shapefiles for each conttinent, subset of publicly available shapefile from ESRI.

  13. e

    Total content City map, blue

    • data.europa.eu
    wms
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    Total content City map, blue [Dataset]. https://data.europa.eu/data/datasets/fb3424c1-bb77-4f34-8e0d-f59beaadb35d
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    wmsAvailable download formats
    Description

    Total contents of the city map in blue form

  14. SMAPVEX12 Vegetation Water Content Map V001

    • catalog.data.gov
    • res1catalogd-o-tdatad-o-tgov.vcapture.xyz
    • +2more
    Updated Aug 23, 2025
    + more versions
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    NASA NSIDC DAAC (2025). SMAPVEX12 Vegetation Water Content Map V001 [Dataset]. https://catalog.data.gov/dataset/smapvex12-vegetation-water-content-map-v001
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    Dataset updated
    Aug 23, 2025
    Dataset provided by
    NASAhttp://nasa.gov/
    Description

    The daily Vegetation Water Content (VWC) maps for the Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12) were derived by calculating Normalized Difference Vegetation Index (NDVI) from SPOT and RapidEye satellite overpasses and then interpolating it for each day of the campaign. In addition, samples from a range of vegetation types were used to compare ground-based measurements to the satellite-based estimates.

  15. USDA ERS GIS Map Services and API User Guide

    • catalog.data.gov
    • datadiscoverystudio.org
    • +4more
    Updated Apr 21, 2025
    + more versions
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    Economic Research Service, Department of Agriculture (2025). USDA ERS GIS Map Services and API User Guide [Dataset]. https://catalog.data.gov/dataset/usda-ers-gis-map-services-and-api-user-guide
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    Dataset updated
    Apr 21, 2025
    Dataset provided by
    Economic Research Servicehttp://www.ers.usda.gov/
    Description

    All of the ERS mapping applications, such as the Food Environment Atlas and the Food Access Research Atlas, use map services developed and hosted by ERS as the source for their map content. These map services are open and freely available for use outside of the ERS map applications. Developers can include ERS maps in applications through the use of the map service REST API, and desktop GIS users can use the maps by connecting to the map server directly.

  16. G

    The World – Continents

    • ouvert.canada.ca
    • open.canada.ca
    pdf
    Updated Mar 14, 2022
    + more versions
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    Natural Resources Canada (2022). The World – Continents [Dataset]. https://ouvert.canada.ca/data/dataset/5a81a675-3923-551f-975a-fd6b387a6921
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    pdfAvailable download formats
    Dataset updated
    Mar 14, 2022
    Dataset provided by
    Natural Resources Canada
    License

    Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
    License information was derived automatically

    Area covered
    World
    Description

    This political map of the World shows national boundaries, continents and oceans.

  17. d

    Predictive soil property map: Rock content (>2mm)

    • datasets.ai
    • gimi9.com
    • +2more
    55
    Updated Sep 18, 2024
    + more versions
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    Department of the Interior (2024). Predictive soil property map: Rock content (>2mm) [Dataset]. https://datasets.ai/datasets/predictive-soil-property-map-rock-content-gt2mm
    Explore at:
    55Available download formats
    Dataset updated
    Sep 18, 2024
    Dataset authored and provided by
    Department of the Interior
    Description

    These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive layer (resdept) and surface rock size and cover. Accuracy and error estimated using a 10-fold cross validation indicated a range of model performances with coefficient of variation (R2) for models ranging from 0.20 to 0.76 with mean of 0.52 and a standard deviation of 0.12. Models of pH, om and ec had the best accuracy (R2 > 0.6). Most texture fractions, CaCO3, and SAR models had R2 values from 0.5-0.6. Models of kwfact, dbovendry, resdept, rock models, gypsum and awc had R2 values from 0.4-0.5 excepting near surface models which tended to perform better. Very fine sands and 200 cm estimates for other models generally performed poorly (R2 from 0.2-0.4), and sample size for the 200 cm models was too low for reliable model building. More than 90% of the soils data used was sampled since 2000, but some older samples are included. Uncertainty estimates were also developed by creating relative prediction intervals, which allow end users to evaluate uncertainty easily.

  18. f

    Recommendations for the suitable contents of the geospatial datasets...

    • plos.figshare.com
    xls
    Updated Jun 15, 2023
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    Timo Rantanen; Harri Tolvanen; Meeli Roose; Jussi Ylikoski; Outi Vesakoski (2023). Recommendations for the suitable contents of the geospatial datasets presenting the distribution of languages including the benefits of each, and our solutions (selected in the case study) concerning the Uralic languages. [Dataset]. http://doi.org/10.1371/journal.pone.0269648.t001
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    xlsAvailable download formats
    Dataset updated
    Jun 15, 2023
    Dataset provided by
    PLOS ONE
    Authors
    Timo Rantanen; Harri Tolvanen; Meeli Roose; Jussi Ylikoski; Outi Vesakoski
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Recommendations for the suitable contents of the geospatial datasets presenting the distribution of languages including the benefits of each, and our solutions (selected in the case study) concerning the Uralic languages.

  19. a

    Environment Map-Copy-Copy

    • africageoportal.com
    Updated Feb 27, 2025
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    Africa GeoPortal (2025). Environment Map-Copy-Copy [Dataset]. https://www.africageoportal.com/maps/67761d833a964cae91e2f3563db56a18
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    Dataset updated
    Feb 27, 2025
    Dataset authored and provided by
    Africa GeoPortal
    Area covered
    Description

    This web map consists of vector tile layers that form a detailed basemap for the world, featuring a neutral style with content adjusted to support environment, landscape, natural resources, hydrologic and physical geography layers. The layers in this map provide unique capabilities for customization, high-resolution display and offline use in mobile devices. They are built using the same data sources used for other Esri basemaps.This web map consists of 4 vector tile layers: A vector tile reference layer for the world with administrative boundaries and labels; populated places with names; ocean names; topographic features; and rail, road, park, school, and hospital labels. A vector tile surface water layer for the world with rivers, lakes, streams, and canals with respective labels. A vector tile watersheds boundaries. A vector tile base layer for the world with vegetation, parks, farming areas, open space, indigenous lands, military bases, bathymetry, large scale contours, elevation values, airports, zoos, golf courses, cemeteries, hospitals, schools, urban areas, and building footprints. Designed by Emily Meriam, this map can be used as a basemap for overlaying other layers of information or as a stand-alone reference map. You can add layers to this web map and save as your own map. Fully display the content of this multisource map using Map Viewer, or current versions of Runtime and ArcGIS Pro. Customize this MapCustomize vector tile layers in this map using the Vector Tile Style Editor to change style, content, symbology, and fonts. Additional details are available in ArcGIS Online Blogs and the Esri Vector Basemaps Reference Document.

  20. c

    Predictive soil property map: Calcium carbonate content

    • s.cnmilf.com
    • catalog.data.gov
    • +1more
    Updated Jul 6, 2024
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    U.S. Geological Survey (2024). Predictive soil property map: Calcium carbonate content [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/predictive-soil-property-map-calcium-carbonate-content
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    Dataset updated
    Jul 6, 2024
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Description

    These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive layer (resdept) and surface rock size and cover. Accuracy and error estimated using a 10-fold cross validation indicated a range of model performances with coefficient of variation (R2) for models ranging from 0.20 to 0.76 with mean of 0.52 and a standard deviation of 0.12. Models of pH, om and ec had the best accuracy (R2 > 0.6). Most texture fractions, CaCO3, and SAR models had R2 values from 0.5-0.6. Models of kwfact, dbovendry, resdept, rock models, gypsum and awc had R2 values from 0.4-0.5 excepting near surface models which tended to perform better. Very fine sands and 200 cm estimates for other models generally performed poorly (R2 from 0.2-0.4), and sample size for the 200 cm models was too low for reliable model building. More than 90% of the soils data used was sampled since 2000, but some older samples are included. Uncertainty estimates were also developed by creating relative prediction intervals, which allow end users to evaluate uncertainty easily.

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U.S. Geological Survey (2024). Predictive soil property map: Silt content [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/predictive-soil-property-map-silt-content

Predictive soil property map: Silt content

Explore at:
Dataset updated
Jul 6, 2024
Dataset provided by
United States Geological Surveyhttp://www.usgs.gov/
Description

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive layer (resdept) and surface rock size and cover. Accuracy and error estimated using a 10-fold cross validation indicated a range of model performances with coefficient of variation (R2) for models ranging from 0.20 to 0.76 with mean of 0.52 and a standard deviation of 0.12. Models of pH, om and ec had the best accuracy (R2 > 0.6). Most texture fractions, CaCO3, and SAR models had R2 values from 0.5-0.6. Models of kwfact, dbovendry, resdept, rock models, gypsum and awc had R2 values from 0.4-0.5 excepting near surface models which tended to perform better. Very fine sands and 200 cm estimates for other models generally performed poorly (R2 from 0.2-0.4), and sample size for the 200 cm models was too low for reliable model building. More than 90% of the soils data used was sampled since 2000, but some older samples are included. Uncertainty estimates were also developed by creating relative prediction intervals, which allow end users to evaluate uncertainty easily.

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