Getting data

Can be a frustrating experience

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

Cugir is relatively simple

• You can browse by “text” or by map

Browse

Browse by Map

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.

Demo

• Regular Browse• Browse by map

Clearing House

In either case you have to agree not to distribute the datg to anyone else

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

Clearing house interface

Kinds of data

• Click on GIS DATA

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.

DEMO

National Map

Using the National Map Viewer

• You can– Zoom in and out– Control what is displayed (layers)– Download the data that is shown

Demo

USGS• Geospatial data gateway

USGS Geospatial onestop

• Awkward to use