Shulin Shen and Jindong Pang, "Measuring the Diffusion of Housing Prices across Space and over Time: Replication and Further Evidence", Journal of Applied Econometrics, Vol. 33, No. 3, 2018, pp. 479-484. There are two top-level folders in the file "sp-files.zip". The first folder "Replication for Brady_2011" contains Matlab data and programs that replicate the results in Brady (2011). There is an "explanation" file that explains what each program does. The original data of Brady(2011) can be found from the JAE data archive: http://qed.econ.queensu.ca/jae/2011-v26.2/brady/ The second folder "Robustness Check" contains the original data and Matlab files that conduct robustness checks by using three additional housing pirce indexes. There are six original data files in the "Robustness Check" folder. They are all csv files with variable names at the first row. These six original data files are for three housing price indexes, so each housing price index has a csv data file and a csv weighting matrix file. There are "explanation_original data.txt" files that further explain the variable names for the six csv files. The Zillow median index is monthly housing price data for 47 counties in California from 2000 to 2014. This index is in dollar values. The source is http://www.zillow.com/research/data/ The Freddie Mac normalized monthly housing price index is for 26 Metropolitan Statistical Areas in California from 2000 to 2014. This is a normalized index and is not in dollar values.The source is http://www.freddiemac.com/_nance/house price index.html The realtor median monthly housing price index is for 36 counties in California from 2003 to 2014, and is produced by California Association of Realtors. This index is in dollar values. The source is http://www.car.org/marketdata/data/?highlight=price%20data The corresponding Matlab data and program files for robustness checks are all included in the appropriate folders. An "explanation" txt file for each housing price index explains what each Matlab program does. The replication should be straightforward. To run the Matlab programs, one has to download the Spatial Econometrics toolbox by James P. LeSage from http://www.spatial-econometrics.com/ Because the .mat files are binary, Unix/Linux users should *not* use "unzip -a".