Download - Getting data
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Getting data
Can be a frustrating experience
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Finding data
• In New York…– CUGIR (Cornell’s clearing house)– New York Clearing house
• There is a link on my home page for lots of other data sources
• Data is available from ESRI also• And there is always Google
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Cugir is relatively simple
• You can browse by “text” or by map
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Browse
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Browse by Map
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NY Clearing House
• Much harder to use• My have to have a password to access
some of the data• Grad Students can get the password
from Dr. Quackenbush • Have read the contractual requirements
and sign off on them.• OR ask a faculty member to get the
data from you.
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Demo
• Regular Browse• Browse by map
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Clearing House
In either case you have to agree not to distribute the datg to anyone else
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Clearing House
• Has lots of data• But site is not easy to navigate• Dropdown search choices sort of
limit how you search …• You can’t search for “ALIS” street
data and that is a kind of data I know is there!
• Lets see how it works
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Clearing house interface
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Kinds of data
• Click on GIS DATA
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Booby Trap
• A lot of the data is offered by Quad sheet – you just click on it
• BOOBY TRAP- There is only partial correspondence between NY quad names and USGS quad names.
• However, you can download an geographic image of quads and that may help.
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DEMO
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National Map
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Using the National Map Viewer
• You can– Zoom in and out– Control what is displayed (layers)– Download the data that is shown
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Demo
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USGS• Geospatial data gateway
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USGS Geospatial onestop
• Awkward to use