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\ArcGIS9.1_documentation\ESRI_Library\ArcGIS_Desktop
folder. You will use the same GIS data you used in Lab1 for this
exercise (Spatial.zip).
- First,
start ArcMap and add elevation, landuse, rec_sites, roads, and schools to
a data frame.
- Next,
create a geodatabase named Site.mdb to store your output information (the
exercise will ask for this on page 43). To create a new geodatabase, open
ArcCatalog, right-click the folder that is your working directory, click
>New >Personal Geodatabase, and name it 'site'.
- Then,
do exercise # 2 (pages 15-46) of Using ArcGIS
Spatial Analyst Tutorial (Using_Spatial_Analyst_Tutorial.pdf). This
document is in I:\Students\data\GIS\ArcGIS9.1_documentation\ESRI_Library\Tutorials.
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?