Difference between revisions of "Great Lakes Bathymetry"
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* [https://earthexplorer.usgs.gov/ The USGS Earth Explorer] is easier to use than the above, but requires a login and download client | * [https://earthexplorer.usgs.gov/ The USGS Earth Explorer] is easier to use than the above, but requires a login and download client | ||
==Workflow== | ==CNC Carve== | ||
===Workflow=== | |||
# Download shapefiles from [http://www.naturalearthdata.com/downloads/ Natural Earth] or other files from [http://www.charts.noaa.gov/InteractiveCatalog/nrnc.shtml?rnc=14500 NOAA]. Superior bathymetry with lower (resolution?) is available [https://databasin.org/datasets/88d305616c3e44cabbd465dde0d916c7 here], with login | # Download shapefiles from [http://www.naturalearthdata.com/downloads/ Natural Earth] or other files from [http://www.charts.noaa.gov/InteractiveCatalog/nrnc.shtml?rnc=14500 NOAA]. Superior bathymetry with lower (resolution?) is available [https://databasin.org/datasets/88d305616c3e44cabbd465dde0d916c7 here], with login | ||
# Download and install [http://www.qgis.org/en/site/ QGIS] and [https://inkscape.org/en/download/ Inkscape]<ref>Stack Exchange answer [https://gis.stackexchange.com/questions/51980/how-to-convert-shapefile-to-vector-emf here]</ref> | # Download and install [http://www.qgis.org/en/site/ QGIS] and [https://inkscape.org/en/download/ Inkscape]<ref>Stack Exchange answer [https://gis.stackexchange.com/questions/51980/how-to-convert-shapefile-to-vector-emf here]</ref> | ||
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==Workflow Take 2== | ==Workflow Take 2== | ||
* | * Try [http://apdrc.soest.hawaii.edu/las8/UI.vm#panelHeaderHidden=false;differences=false;autoContour=false;globalMin=-237;globalMax=1667;xCATID=C1354ADCD9A2E42563E67810557FE547;xDSID=etopo1;varid=b_bathy-etopo1;imageSize=auto;over=xy;compute=Nonetoken;catid=C1354ADCD9A2E42563E67810557FE547;dsid=etopo1;varid=b_bathy-etopo1;avarcount=0;xlo=-92.788119178879;xhi=-69.93315874592;ylo=41.247106546728;yhi=49.388349427462;operation_id=Plot_2D_XY_zoom;view=xy;ferret_image_format=gif;ferret_use_graticules=none;ferret_margins=false;ferret_deg_min_sec=false;ferret_contour_style=color_filled_plus_lines;ferret_contour_levels=20 this] map with [http://www.instructables.com/id/Lasercut-Bathymetric-Map-of-Arabian-Sea/ these] instructions | ||
* For OSM information, use [http://download.geofabrik.de/north-america.html Geofabrik.de] and reformat if necessary as described [https://gis.stackexchange.com/questions/39112/load-osm-pbf-file-in-qgis here]<ref>Geographic Information Systems Stack Exchange. "Load .osm.pbf file in Qgis." [https://gis.stackexchange.com/questions/39112/load-osm-pbf-file-in-qgis here].</ref> | * For OSM information, use [http://download.geofabrik.de/north-america.html Geofabrik.de] and reformat if necessary as described [https://gis.stackexchange.com/questions/39112/load-osm-pbf-file-in-qgis here]<ref>Geographic Information Systems Stack Exchange. "Load .osm.pbf file in Qgis." [https://gis.stackexchange.com/questions/39112/load-osm-pbf-file-in-qgis here].</ref> | ||
==3D Print== | |||
# Download ArcGrid DEM from USGS [https://viewer.nationalmap.gov/basic/#productSearch National Map] or [https://earthexplorer.usgs.gov/ Earth Explorer] (3DEP, 1/3 arc-second DEM) | |||
# Unzip file | |||
# Open QGIS, add Vector, add layer file (.adf) | |||
# Select extent (Raster -> Extraction -> Clipper) | |||
# Save as GeoTIFF | |||
# Add GeoTIFF to model | |||
# Analyze to DEM (Raster -> Analysis -> DEM [Terrain Models]){{note|This step creates an apparently inaccurate model (top). Using [http://freegeographytools.com/2009/3dem-website-is-gone-but-3dem-still-available-here 3DEM] creates a more accurate representation, but the extent was smaller on the second.[[File:Erie2bumps.png|thumb|left]][[File:Eriesmooth.png|thumb|left]]}} | |||
# Create STL (Raster -> DEMto3D) | |||
==Other Sources== | ==Other Sources== | ||
Revision as of 14:27, 8 June 2017
Ideas
Process of creating a 3D map of the area
Resources
- OceansMap, a well-aggregated set of realtime data about major bodies of water around the world, including the Great Lakes region
- Historical maps from the Army Corps of Engineers
- Portal for Great Lakes Observing System information from the Integrated Ocean Observing system
- Downloadable Great Lakes bathymetric maps from NOAA
- Google maps
- Further information from the Great Lakes Information Network
- The National Map combines many of the above resources
- The USGS Earth Explorer is easier to use than the above, but requires a login and download client
CNC Carve
Workflow
- Download shapefiles from Natural Earth or other files from NOAA. Superior bathymetry with lower (resolution?) is available here, with login
- Download and install QGIS and Inkscape[1]
- Open with QGIS Desktop, realize the data is only for oceans...
- Download bathymetry information from each lake from NOAA here
- No need to extract files, open each in QGIS Desktop
- Add OpenStreetMap information (not working at this time, probably missed a step)
- Right-click shapefile in left layers panel, select Properties
- Choose Filter, then create expression, e.g. "DEPTH" IN ('0', '1', '25', '50', '60')[2]
It is helpful to use the Values box (make sure "Use unfiltered layer" is checked if changing an applied filter) to see the extent of the map
Workflow Take 2
- Try this map with these instructions
- For OSM information, use Geofabrik.de and reformat if necessary as described here[3]
3D Print
- Download ArcGrid DEM from USGS National Map or Earth Explorer (3DEP, 1/3 arc-second DEM)
- Unzip file
- Open QGIS, add Vector, add layer file (.adf)
- Select extent (Raster -> Extraction -> Clipper)
- Save as GeoTIFF
- Add GeoTIFF to model
- Analyze to DEM (Raster -> Analysis -> DEM [Terrain Models])This step creates an apparently inaccurate model (top). Using 3DEM creates a more accurate representation, but the extent was smaller on the second.
- Create STL (Raster -> DEMto3D)
Other Sources
- Earth satellite imagery from USGS, esp. those over time
- ArcGIS contour map of the Great Lakes
- Live Access Servers hosted by NOAA/PMEL/TMAP provide information on air quality, ocean salinity, temperature, etc.
- LIDAR resources in case we want to machine it. I want to machine it.
- BBBike.org pulls from OSM, but extent is much too small.
- Using plywood (though very heavy) with the proper scale would approximate the contour lines of a topo map...