URP 6271 Homework # 3 Due January 31, 2002
You
are working for a planning firm that has been hired to locate a new site
for a microchip factory.The site
must be within the city limits of La Crosse, a small town located in northern
Alachua County.The plans for the
factory require that it be built on one complete parcel no less than 30,000
square feet.Because all of the
products will be exported by freight truck the factory must also be located
within 30 meters of an existing major road. Your client wants you to use
a GIS to find a suitable location.
-
Start ArcCatalog
and navigate to K: Classwork\covers_nad27. Right
click on the parcels coverage -> select Properties and click
the Projections tab. Notice
that the projected coordinate system is NAD_1927_Albers. We
will be working with FGDL data which is in a different coordinate system,
NAD_1983_HARN_Albers, therefore the parcels coverage will have to be re-projected. For
this assignment you will save all outputs to your H: drive. Go to
ArcToolbox and re-project the parcels coverage, don’t forget to
Build it. (You
should remember this from your last homework)
-
Start ArcMap
and add the parcels coverage that you have just re-projected. Navigate
to L:\FGDL\state\data\ -> add
the data layers named citylm and majrds. Then
navigate to L:\FGDL\county\data\alachua_core and add the cntbnd
data. If you right click
on one of these layers, select -> Properties -> Source, you
will see that they are shapefiles. When
you add these data layers you may get a warning message, click OK.
-
Go to the
GUI (main tool bar) and click Selection -> Set Selectable Layers ->
turn everything off except citylm. Next
using the Identify button locate the city of La Crosse, then
using the Select Features button select only the city of
La Crosse. The
city limits should be highlighted. Go
to your Table of Contents and right click on the citylm layer, ->
choose Selection -> Create Layer from Selected Feature. You
can now remove (remove by right clicking and selecting Remove)
the original citylm layer. Also
go to the GUI -> Selection ->Set Selectable Layers, turn all of
the layers back on.
-
Go to the
GUI, choose Selection -> Select by Location. Select
Features from -> parcels polygon -> that are contained by the features
-> citylm selection -> click apply. Zoom
in by drawing a box with the magnifying glass. Next,
right click on the parcels polygon layer in the table of contents
-> choose Selection -> Create Layer From Selected Features. Now
remove the original parcels polygon coverage.
-
Zoom in
all the way to the city limits and make sure your Majrds layer is
the top layer in the table of contents. If
it is not select it and drag it to the top. Go
to the GUI and click Selection -> Select by Attributes. Set
the Layer to: parcels
polygon selection. Set
the Method to: Create
New Selection. In the
Fields: box select “Area” (double click), then click on the > and
then type in 30,000. You
have just queried all of the parcels that are greater than or equal too
30,000 sq. meters. Go
to the table of contents and right click on parcels polygon selection,
open the attribute table. At
the bottom of the table click: show selected records. Only
the selected parcels should be visible in blue. Print
screen and paste into a word doc, close the table. Next,
right click on the parcels polygon selection layer in the table
of contents, choose Selection -> Create Layer From Selected Feature. Remove
the original parcels coverage.
-
Go to the
GUI, choose Selection -> Select by Location -> select features in
the parcels polygon layer -> that are within a distance of -> the
features in majrds -> apply a buffer of 30.00 meters. This
will select all parcels that lie within 30 meters of all major roads passing
through La Crosse. You
have found the suitable locations. Print
screen, paste into your word doc and send to Stanley.