Massachusetts Institute of Technology
Department of Urban Studies and Planning

11.520: A Workshop on Geographic Information Systems
11.188: Urban Planning and Social Science Laboratory

Lab Exercise 7: Raster Spatial Analysis

This lab exercise is due Nov. 1st, 2010.
 

(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 Marc 15, 1989 (in the Southwest portion of Cambridge)? (Also be sure to turn in the PDF of your ArcMap layout.) 
_______________
Last modified: 24 October 2010 by Joseph Ferreira

Back to the 11.520 Home Page. Back to the CRL Home Page.

Please send comments about this page to the 11.520 class staff <11.520staff@mit.edu>.