Thomas Lavergne<p>I was going to ask the <a href="https://fediscience.org/tags/Earth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Earth</span></a> <a href="https://fediscience.org/tags/Observation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Observation</span></a> community, including <span class="h-card" translate="no"><a href="https://mastodon.green/@EOMasters" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>EOMasters</span></a></span>, if there were good online resources to access and process <a href="https://fediscience.org/tags/DigitalElevationModel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalElevationModel</span></a> (DEM) data. </p><p>But just found out that my ace colleague <span class="h-card" translate="no"><a href="https://datasci.social/@LukeDataManager" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>LukeDataManager</span></a></span> had done a detailed workflow and published it online.</p><p><a href="https://nordatanet.github.io/Exploring_FAIR_data_with_Python/Global_and_regional_bathymetry.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nordatanet.github.io/Exploring</span><span class="invisible">_FAIR_data_with_Python/Global_and_regional_bathymetry.html</span></a></p><p>Note to self: be more like Luke and publish my workflows</p><p><a href="https://fediscience.org/tags/OpenScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OpenScience</span></a></p>
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#digitalelevationmodel
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💧🌏 Greg Cocks<p>[Canadian] National Elevation Data Strategy Newsletter [NRCAN]<br>--<br><a href="https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">gogeomatics.ca/national-elevat</span><span class="invisible">ion-data-strategy-a-significant-coverage-increase/</span></a> <-- shared technical newsletter<br>--<br><a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIS</span></a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatial</span></a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mapping</span></a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>remotesensing</span></a> <a href="https://techhub.social/tags/LiDAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LiDAR</span></a> <a href="https://techhub.social/tags/elevation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>elevation</span></a> <a href="https://techhub.social/tags/opendata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>opendata</span></a> <a href="https://techhub.social/tags/airborneLiDAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>airborneLiDAR</span></a> <a href="https://techhub.social/tags/AutomaticallyExtractedBuildings" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AutomaticallyExtractedBuildings</span></a> <a href="https://techhub.social/tags/buildingfootprints" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>buildingfootprints</span></a> <a href="https://techhub.social/tags/Canada" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Canada</span></a> <a href="https://techhub.social/tags/CanElevation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CanElevation</span></a> <a href="https://techhub.social/tags/CGVD2013" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CGVD2013</span></a> <a href="https://techhub.social/tags/CopernicusDEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CopernicusDEM</span></a> <a href="https://techhub.social/tags/dataacquisition" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dataacquisition</span></a> <a href="https://techhub.social/tags/digitalelevationmodel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalelevationmodel</span></a> <a href="https://techhub.social/tags/DEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEM</span></a> <a href="https://techhub.social/tags/Digitalsurfacemodel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Digitalsurfacemodel</span></a> <a href="https://techhub.social/tags/DigitalTerrainModel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalTerrainModel</span></a> <a href="https://techhub.social/tags/DSM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DSM</span></a> <a href="https://techhub.social/tags/DTM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DTM</span></a> <a href="https://techhub.social/tags/elevationproducts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>elevationproducts</span></a> <a href="https://techhub.social/tags/FloodHazardMapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FloodHazardMapping</span></a> <a href="https://techhub.social/tags/geographicdata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geographicdata</span></a> <a href="https://techhub.social/tags/highresolutiondata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>highresolutiondata</span></a> <a href="https://techhub.social/tags/HRDEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HRDEM</span></a> <a href="https://techhub.social/tags/HRDEMmosaic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HRDEMmosaic</span></a> <a href="https://techhub.social/tags/PointCloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PointCloud</span></a> <a href="https://techhub.social/tags/mediumresolutionelevationmodel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mediumresolutionelevationmodel</span></a> <a href="https://techhub.social/tags/MRDEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MRDEM</span></a> <a href="https://techhub.social/tags/NAD83" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NAD83</span></a> <a href="https://techhub.social/tags/NationalElevationDataStrategy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NationalElevationDataStrategy</span></a> <a href="https://techhub.social/tags/NRCAN" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NRCAN</span></a> <a href="https://techhub.social/tags/topographicaldata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>topographicaldata</span></a> <a href="https://techhub.social/tags/vectorformat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vectorformat</span></a> <a href="https://techhub.social/tags/flood" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flood</span></a> <a href="https://techhub.social/tags/flooding" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flooding</span></a> <a href="https://techhub.social/tags/extremeweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>extremeweather</span></a> <a href="https://techhub.social/tags/climatechange" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>climatechange</span></a> <a href="https://techhub.social/tags/naturalhazard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>naturalhazard</span></a> <a href="https://techhub.social/tags/risk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>risk</span></a> <a href="https://techhub.social/tags/hazard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hazard</span></a> <a href="https://techhub.social/tags/datacoverage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>datacoverage</span></a><br>@NRCAN</p>
💧🌏 Greg Cocks<p>The Basics of LiDAR - Light Detection and Ranging - Remote Sensing [tree focused]<br>--<br><a href="https://www.neonscience.org/resources/learning-hub/tutorials/LiDAR-basics" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">neonscience.org/resources/lear</span><span class="invisible">ning-hub/tutorials/LiDAR-basics</span></a> <-- shared tutorial<br>--<br>[this post should not be considered an endorsement of any organisation, but is shared for learning purposes]<br>“LiDAR or Light Detection and Ranging is an active remote sensing system that can be used to measure vegetation height across wide areas.<br>This [tutorial] page… introduce[s the] fundamental LiDAR (or lidar) concepts including:<br> • What LiDAR data are.<br> • The key attributes of LiDAR data.<br> • How LiDAR data are used to measure trees...”<br><a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIS</span></a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatial</span></a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mapping</span></a> <a href="https://techhub.social/tags/elevation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>elevation</span></a> <a href="https://techhub.social/tags/spatialdata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialdata</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/data" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>data</span></a> <a href="https://techhub.social/tags/digital" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digital</span></a> <a href="https://techhub.social/tags/DEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEM</span></a> <a href="https://techhub.social/tags/digitalelevationmodel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalelevationmodel</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/LiDAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LiDAR</span></a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>remotesensing</span></a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>model</span></a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modeling</span></a> <a href="https://techhub.social/tags/IFSAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IFSAR</span></a> <a href="https://techhub.social/tags/onlinelearning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>onlinelearning</span></a> <a href="https://techhub.social/tags/onlinelessons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>onlinelessons</span></a> <a href="https://techhub.social/tags/tutorial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tutorial</span></a> <a href="https://techhub.social/tags/landform" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landform</span></a> <a href="https://techhub.social/tags/geomorphology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geomorphology</span></a> <a href="https://techhub.social/tags/landforms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landforms</span></a> <a href="https://techhub.social/tags/guide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>guide</span></a> <a href="https://techhub.social/tags/vegetation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vegetation</span></a> <a href="https://techhub.social/tags/forest" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>forest</span></a> <a href="https://techhub.social/tags/forestry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>forestry</span></a> <a href="https://techhub.social/tags/tree" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tree</span></a> <a href="https://techhub.social/tags/trees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>trees</span></a></p>
💧🌏 Greg Cocks<p>What Is A Digital Elevation Model (DEM)?- A Practical Guide<br>--<br><a href="https://equatorstudios.com/what-is-a-digital-elevation-model-dem" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">equatorstudios.com/what-is-a-d</span><span class="invisible">igital-elevation-model-dem</span></a> <-- shared tutorial<br>--<br>“A Digital Elevation Model (DEM) is a digital cartographic dataset that represents a continuous topographic elevation surface through a series of cells. Each cell represents the elevation (Z) of a feature at its location (X and Y). Digital Elevation Models are a “bare earth” representation because they only contain information about the elevation of geological (ground) features, such as valleys, mountains, and landslides, to name a few. They do not include any elevation data concerning non-ground features, such as vegetation or buildings...”<br>[read more at the link above...]<br><a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIS</span></a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatial</span></a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mapping</span></a> <a href="https://techhub.social/tags/elevation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>elevation</span></a> <a href="https://techhub.social/tags/spatialdata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialdata</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/data" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>data</span></a> <a href="https://techhub.social/tags/digital" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digital</span></a> <a href="https://techhub.social/tags/DEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEM</span></a> <a href="https://techhub.social/tags/digitalelevationmodel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalelevationmodel</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/LiDAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LiDAR</span></a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>remotesensing</span></a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>model</span></a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modeling</span></a> <a href="https://techhub.social/tags/IFSAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IFSAR</span></a> <a href="https://techhub.social/tags/onlinelearning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>onlinelearning</span></a> <a href="https://techhub.social/tags/onlinelessons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>onlinelessons</span></a> <a href="https://techhub.social/tags/guide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>guide</span></a> <a href="https://techhub.social/tags/tutorial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tutorial</span></a> <a href="https://techhub.social/tags/landform" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landform</span></a> <a href="https://techhub.social/tags/bathymetry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bathymetry</span></a> <a href="https://techhub.social/tags/geomorphology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geomorphology</span></a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geology</span></a> <a href="https://techhub.social/tags/landforms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>landforms</span></a></p>
AnthropoceneMan<p>Does anyone know of any concrete ways the old USGS scribed map products or their derivatives are used today?</p><p>For a while, the line work was turned into raster products, I believe, and then into digital elevation models?</p><p>Do any part of of the old topo map products still have use or relevance, or have they seen their last hurrahs?</p><p><a href="https://universeodon.com/tags/Maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Maps</span></a> <a href="https://universeodon.com/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIS</span></a> <a href="https://universeodon.com/tags/Cartography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cartography</span></a> <a href="https://universeodon.com/tags/DigitalElevationModel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalElevationModel</span></a> <a href="https://universeodon.com/tags/Topography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Topography</span></a></p>
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