Massachusetts Institute of Technology
Department of Urban Studies and Planning
| 11.188: Urban Planning and Social Science
Laboratory |
Lab Exercise 7: Raster Spatial Analysis
This lab exercise is due April 7, 2014.
(1) What are the original and interpolated values for the grid
cell in the NorthWest (upper left) corner of Cambridge
that contains the most expensive Realprice value in the original sale89
data set?
Original sales89 value: ___________
sale89_pw2-2 value: ______________
sales89_pw1 value: ____________
(2) What is this interpolated value of sale89_1000m
for the cell
with the highest-price sale: ___________? Why is this estimate
even
higher than the power=2 estimate?
(3) Find the cell containing the highest priced sales89 home in the
northwest
part of Cambridge. What is the interpolated value of that cell
using
the two methods based on med_hvalue?
hvalue_point value: _______________
hvalue_poly value: _____________
.
(4) Comment briefly on some of the characteristics of this interpolated
surface of med_hvalue compared with the ones derived from the sales89
data.
Are the hot-spots more concentrated or diffuse? Does one or another
approach
lead to a broader range of spatial variability?
(5) What is the interpolated housing value based on the Raster
Calculator
average of the sale89_pw2-2
and hval_non0 estimates
for the cell containing the 20 Coolidge Ave sale on March 15, 1989 (in the
Southwest
portion of Cambridge)? (Also be sure to turn in the PDF of your ArcMap layout.)
_______________
Last modified: March 31, 2014 by Joseph Ferreira and Jingsi Xu
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