1 dataset found
  1. a

    Concurrent LC MHM

    • globe-data-igestrategies.hub.arcgis.com
    • geospatial.strategies.org
    Updated Jan 7, 2023
    + more versions
    Share
    FacebookFacebook
    TwitterTwitter
    Email
    Click to copy link
    Link copied
    Close
    Cite
    Institute for Global Environmental Strategies (2023). Concurrent LC MHM [Dataset]. https://globe-data-igestrategies.hub.arcgis.com/items/2c552c8d1b0445a990c7041f76586373
    Explore at:
    Dataset updated
    Jan 7, 2023
    Dataset authored and provided by
    Institute for Global Environmental Strategies
    Area covered
    Description

    This point layer consists of GLOBE Observer Mosquito Habitat Mapper (MHM) and GLOBE Observer Land Cover (LC) observation data resulting from the following processing steps:MHM GEOJSON Data was pulled from this GLOBE API URL: https://api.globe.gov/search/v1/measurement/protocol/measureddate/?protocols=mosquito_habitat_mapper&startdate=2017-05-01&enddate=2022-12-31&geojson=TRUE&sample=FALSE Only device-reported measurements are kept- "DataSource" = "GLOBE Observer App" As we are only interested in device measurements, latitude and longitude are determined from "MeasurementLatitude" and "MeasurementLongitude". All instances of duplicate photos have been removed from the dataset.LC GEOJSON Data was pulled from this GLOBE API URL:https://api.globe.gov/search/v1/measurement/protocol/measureddate/?protocols=land_covers&startdate=2018-09-01&enddate=2022-12-31&geojson=TRUE&sample=FALSE Only device-reported measurements are kept- "DataSource" = "GLOBE Observer App" As we are only interested in device measurements, latitude and longitude are determined from "MeasurementLatitude" and "MeasurementLongitude".ConcurrenceThese two layers were then combined using a spatiotemporal join with the following conditions: Tool: Geoanalytics Desktop Tools -> Join Features Target Layer: LC Join Type: one to many Join Layer: MHM Coordinate fields used: MeasurementLatitude, MeasurementLongitude Time fields used: MeasuredAt (UTC time) Spatial Proximity: 100 meters (NEAR_GEODESIC) Temporal Proximity: 60 minutes (NEAR) Attribute match: UserIDThe result is a dataset consisting of all paired instances where the same observer (Userid) collected a Mosquito Habitat Mapper observation within 100 meters and 1 hour of collecting a Land Cover observation.Additional fields include:lc_mhm_obsID_pair': A string representing the two paired observations- {lc_LandCoverId}_{mhm_MosquitoHabitatMapperId}'lc_latlon': A string representing the coordinates of the LC observation - "({lc_MeasurementLatitude}, {lc_MeasurementLongitude})"'mhm_latlon': A string representing the coordinates of the MHM observation - "({mhm_MeasurementLatitude}, {mhm_MeasurementLongitude})"'spatialDistanceMeters': Numeric value representing the distance between the two paired observations in meters'temporalDistanceMinutes': Numeric value representing the time delta between the two paired observations in minutes'squareBuffer': A polygon string representing a 100m square centered on the LC observation coordinates. This may be used in conjunction with additional map layers to evaluate the land cover types near the observation coordinates. (n.b. This is not the buffer used in calculating spatiotemporal concurrence)For the purposes of this visualization, point geometries are defined by the land cover measurement coordinates.

  2. Not seeing a result you expected?
    Learn how you can add new datasets to our index.

Share
FacebookFacebook
TwitterTwitter
Email
Click to copy link
Link copied
Close
Cite
Institute for Global Environmental Strategies (2023). Concurrent LC MHM [Dataset]. https://globe-data-igestrategies.hub.arcgis.com/items/2c552c8d1b0445a990c7041f76586373

Concurrent LC MHM

Explore at:
Dataset updated
Jan 7, 2023
Dataset authored and provided by
Institute for Global Environmental Strategies
Area covered
Description

This point layer consists of GLOBE Observer Mosquito Habitat Mapper (MHM) and GLOBE Observer Land Cover (LC) observation data resulting from the following processing steps:MHM GEOJSON Data was pulled from this GLOBE API URL: https://api.globe.gov/search/v1/measurement/protocol/measureddate/?protocols=mosquito_habitat_mapper&startdate=2017-05-01&enddate=2022-12-31&geojson=TRUE&sample=FALSE Only device-reported measurements are kept- "DataSource" = "GLOBE Observer App" As we are only interested in device measurements, latitude and longitude are determined from "MeasurementLatitude" and "MeasurementLongitude". All instances of duplicate photos have been removed from the dataset.LC GEOJSON Data was pulled from this GLOBE API URL:https://api.globe.gov/search/v1/measurement/protocol/measureddate/?protocols=land_covers&startdate=2018-09-01&enddate=2022-12-31&geojson=TRUE&sample=FALSE Only device-reported measurements are kept- "DataSource" = "GLOBE Observer App" As we are only interested in device measurements, latitude and longitude are determined from "MeasurementLatitude" and "MeasurementLongitude".ConcurrenceThese two layers were then combined using a spatiotemporal join with the following conditions: Tool: Geoanalytics Desktop Tools -> Join Features Target Layer: LC Join Type: one to many Join Layer: MHM Coordinate fields used: MeasurementLatitude, MeasurementLongitude Time fields used: MeasuredAt (UTC time) Spatial Proximity: 100 meters (NEAR_GEODESIC) Temporal Proximity: 60 minutes (NEAR) Attribute match: UserIDThe result is a dataset consisting of all paired instances where the same observer (Userid) collected a Mosquito Habitat Mapper observation within 100 meters and 1 hour of collecting a Land Cover observation.Additional fields include:lc_mhm_obsID_pair': A string representing the two paired observations- {lc_LandCoverId}_{mhm_MosquitoHabitatMapperId}'lc_latlon': A string representing the coordinates of the LC observation - "({lc_MeasurementLatitude}, {lc_MeasurementLongitude})"'mhm_latlon': A string representing the coordinates of the MHM observation - "({mhm_MeasurementLatitude}, {mhm_MeasurementLongitude})"'spatialDistanceMeters': Numeric value representing the distance between the two paired observations in meters'temporalDistanceMinutes': Numeric value representing the time delta between the two paired observations in minutes'squareBuffer': A polygon string representing a 100m square centered on the LC observation coordinates. This may be used in conjunction with additional map layers to evaluate the land cover types near the observation coordinates. (n.b. This is not the buffer used in calculating spatiotemporal concurrence)For the purposes of this visualization, point geometries are defined by the land cover measurement coordinates.

Search
Clear search
Close search
Google apps
Main menu