Service: By Type
Data & Software Searching:
The first step of searching for geo-spatial data can be a very
difficult and time consuming task. This service is provided by the
GIS Service at the Map Collection. One thing that must be understood
about GIS is that there is a lot of jargon which the user would
have to be familiar with in order to do an effective search for
geo-spatial data. While this web site provides a some GIS
jargon basics, it takes some time to become accustomed with
the many sources of geo-spatial data and the many ways to search
these sources. Generally, it is expected that the patron will do
his or her best to search for needed geo-spatial data, then consult
the GIS Service when they have exhausted the extent of their searching
Besides geo-spatial data, there is a range of statistical and cartographic
data and products that serve as a piece of the complete geo-spatial
data set. For example, there may be a statistical table with variables
describing certain economic values broken down by municipal districts
in the Philippines but no geographic features representing these
municipalities. A solution to creating a complete geo-spatial data
set with this piece may be finding a vector file that contains the
Philippines municipal boundaries to which the statistical table
could be linked.
The GIS Service at the Map Collection provides a mechanism through
which the patron can work to find solutions to these processing
problems. However, providing searches for quasi geo-spatial data
is limited mostly to cartographic data rather than statistical data.
Services provided by other libraries on campus may be more suitable
for finding statistical data. For example, if you needed to find
statistics on the occurence of asthma in children in Connecticut
by town and wanted to map it out, the Epidemiology and Public Health
Library may be a more appropriate place to find the statistical
data. Once found, then the GIS Service could help the patron determine
the utility of the statistical data as a geo-spatial data set and
find town boundaries to link to the statistical table.
If no exsisting digital cartographic files can be found for the
patron, the GIS Service can also search the wealth of paper maps
provided by the Map Collection as well as other cartographic sources
to help the patron convert the paper maps into geo-referenced cartographic
Before requesting geo-spatial data, a patron should narrow the
focus of what they are looking for and the purpose of using the
data in their research. Generally the patron should provide some
basic elements with requests for geo-spatial
data: a specific geographic location or scope, preferred geographic
units, scale, resolution, thematic type(s) of data desired projection,
and coordinate system.
The Statlab has a variety of data and software services. It holds
the entire ESRI 8 piece CD set available for use on a network. They
can help patrons locate these specific data sets. The Statlab also
provides assistance with finding or customizing software scripts
and extensions for ArcView. In addition, the Statlab also provides
assistance searching StatCat.
Social Science Libraries & Information
Services / Government Documents & Information Center:
The Social Science Libraries & Information Services and Government
Documents & Information Center have deep expertise in locating
statistical data sets. Librarians in both locations can provide
assistance in searching StatCat,
which provides information about the holdings of Yale's Social Science
Data Archive as well as datasets available in the Yale University
Library and on the Internet. SSLIS and GDIC librarians can also
assist with searching Orbis for numeric datasets that can be used
in GIS projects. The Government Documents & Information Center
holds a vast amount of federal government geo-spatial data and can
assist patrons in locating and using these data sets.
No service at this time.
The EPH library can assit patrons in finding statistical Epidemiology
and Public Health data that can be converted for use in GIS.
Center for Earth Observation:
The CEO can assist in locating remote sensing data such as airphotos
and satellite photos that can be used in GIS.