Lab 3:
Vector and Pattern Analysis in ArcInfo
Introduction
This lab teaches you how to use ArcGIS tools in ArcToolbox and ModelBuilder to build an analysis model.
Instructions
Follow the instructions to finish all exercises. Hand in your
answers and the associated outputs to the TA. Labs should be typed,
include your name, be well organized, and be stapled together.
Using ModelBuilder
Read Chapter 8 and skim chapter 9
of Geoprocessing in ArcGIS
(Geoprocessing_in_ArcGIS.pdf). The pdf is in the I:\Students\Data\GIS\ArcGIS
Documentation\ArcGIS9.1_documentation\ESRI_Library\ArcGIS_Desktop folder. You
will use the same GIS data you used in Lab1 for this exercise (Spatial.zip).
- Please
refer to Using_Spatial_Analyst_Tutorial.pdf in the I:\Students\Data\GIS\ArcGIS
Documentation\ArcGIS9.1_documentation\ESRI_Library\Tutorials folder for
the lab instructions that follow.
- First,
create a geodatabase named Site.mdb to store
your output information (the exercise will ask for this on page 43 in
exercise #2). To create a new geodatabase, open ArcCatalog, right-click the folder that is your
working directory, click >New >Personal Geodatabase,
and name it 'site'.
- Next,
start ArcMap and add elevation, landuse, rec_sites, roads,
and schools to a data frame.
- Then,
do exercise # 2 (pages 15-46). Note: To open the
slope tool (page 20), you'll need to first turn on the Spatial Analyst
extension license if it isn't already on (via >Tools >Extensions on
the menu).
Answer the following questions while you do the exercise:
- Look up the majority
filter tool in the ArcGIS Desktop Help. Read the
help topic and explain how the filter works in terms of using FOUR and
EIGHT neighbors.
- Print out the model
(from design view) you created in this exercise.
- Create
a map showing Output optimal areas raster (i.e., opt_areas)
and Output filtered optimal areas raster (i.e., opt_areasM)
and export the map to a JPG and paste it into your lab MS Word document.
You will need to insert a second data frame and move one of the raster
layers to the new data frame to show two data layers in one map.
- In contrast to what you
did in exercise #2 (i.e., Finding a site for a
new school) in Lab1, Part I, what are the benefits of having a GIS model?