1. An Introduction to GIS concepts and some new ideas to consider.
What you need is a GIS that really works!
A tool that resource managers can use.
I need to
make a map !
You need a GIS
specialist !
You need a
G.I.S. !
You need
training !
EPIC 2000

2. What is GIS? (Geographic Information Systems)
Definition: A Geographic Information System is a computer based system used to: capture, manage, edit, analyze and output geographically referenced information.
Components: A GIS has 4 essential components:
Hardware
Software
Data
People
The most important component is
PEOPLE
EPIC 2000

3. GIS Database Layering Concept
EPIC 2000

4. GIS Community is Split Between Two Different Views of the World
Vector
Raster
EPIC 2000

5. What is the Difference Between Raster or Vector Formats?
Raster Data
Vector Data
EPIC 2000

6. Types of Vector Data POLYGON Examples: Land use Soils Ownership tracts
Parcels
LINE
Examples:
Streamlines
Road networks
Pipelines
POINT
Examples:
Sample locations
Archareologic sites
Gas wells
Symbols and text
EPIC 2000

7. Types of Raster Data (Cell size determines Resolution)
Data Layers
Examples:
DEM
DOQs and DRGs
Scanned Images
Land use & Soils
Watersheds
Vector Overlays
Examples:
MCD, PLS
Roads
Cover types
Lakes & Streams
Point Overlays
Examples:
GPS data points
Historical data stored by Public land Survey
Well logs
Gypsy moth sites
EPIC 2000

8. GIS software options available
Raster GIS
Vector
GIS
DNR - LMIC extensions link EPPL7, EPIC and ArcView
ESRI extensions add spatial analysis functions
EPIC 2000

9. Which is Better, Raster or Vector? Both systems have their strengths.
Vector Systems
(ArcView)
Strengths:
Visual display
Data capture
Raster Systems
(EPIC and EPPL7)
Strengths:
Spatial Analysis
Modeling
How data is used:
Data is displayed and analyzed
in vector format
Raster data is used like
wall paper for display.
How data is used:
Data is displayed and analyzed
in raster format.
Vector data is used as overlays
for display and mapping.
EPIC 2000

10. Both Raster and Vector Systems Use the Same Data
Both Raster and Vector Systems Use the Same Data! (User must know the resolution of the data source)
EPIC 2000

11. Data is Data ! Vector data : Raster data : Community maps and
annual updates were
digitized using ArcInfo and
converted to Shape files and
to raster files.
Raster data :
All analysis was performed
on the data in raster format.
Analysis like: hazard zones,
Sore load, economic cost benefit analysis and community accomplishments.
EPIC 2000

12. Integrated GIS options for Minnesota EPPL7, EPIC 2000 and ArcView