introduction Flashcards
GIS
a set of computer tools allowing people to work with data tied to a particular location
aspatial data
not tied or only incidentally tied to a location on earth
spatial data
location is critical to the data
what is GIS built from
a computer hardware platform, GIS software, Data storage, data input hardware, info output hardware, GIS data, GIS personnel
any GIS software has at least
data entry, data management tools, thematic mapping, data analysis, and map layouts
thematic mapping
displaying data in map form
Ptolmey
created first known Atlas
Jean Picard
introduced longitude measurement in 1669
Gaspard Tournachan
founded remote sensing by carrying large cameras in hot air balloons
Jaquelin Tyrwhitt
made the first reference to map overlay techniques
Ian McHarg
early implementor of the use of overlay techniques for highway planning
Boger Tomlinson
father of GIS in the mid 1960’s
the Dangermonds
founded ESRI in 1969 which pioneered linking spatial representations with attributes in a table
what can GIS do
land use planning, environmental management, sociological analysis, business marketing, used in almost any field
enterprise GIS
facilitates the transition to server GIS and open source options which increase ease of sharing and reduce costs
primary data providers
create the base data for many GIS applications
applications GIS
professionals trained in other fields who use GIS as part of their work
development GIS
build and maintain GIS software and hardware components
distributed database GIS
set up and maintain servers and networks for server and enterprise GIS
steps of project management
identify project > develop suitable model > collect required data > perform analysis > present results
models
convert raw data of the project to useful data using a set of steps and assumptions
layers
data storage with only one type of data in each
webGIS
a system connected by the internet using the same components as desktop GIS but more easily distributed
GIS servers
provide geospatial data over the internet
cloud GIS
consists of warehouses of computers and hard drives managed by a company that rents out space rather than each company making their own server
web map
an interactive map based solely on GIS services