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Geodist sas11/13/2022 ![]() Location and proximity/distance also have explanatory power.Implicit in most data (e.g., a survey of Ontario voters, bank branch IDs, etc.).Gravelle, Independent Statistical Consultant A Tour of Geospatial Data Analysis Tools in SAS Timothy B. Input values can be expressed in degrees or in radians. Business data, survey data, administrative data come from somewhere… 2.E.g., proximity to/distance from: – Geographic features (e.g., borders) – Various sites (e.g., retail locations, energy infrastructure). The GEODIST function computes the geodetic distance between any two arbitrary latitude and longitude coordinates. As popular as these kinds of mapping tools have become, there is no automatic way to import their data into SAS.Reading in spatial data: Google Earth (.kml) files Google Earth can be a source of spatial data – e.g., the Northern Gateway (Canada) and Keystone XL (US) pipelines (publicized by NGOs) Ex.: reading in the Statistics Canada 2011 Census forward sortation area (FSA) polygon shapefile: PROC MAPIMPORT DATAFILE= "C:\Census11\gfsa000b11a_e.shp" OUT=map_0 RUN.Reads in the main types of map shapefiles used by GIS packages, both polygon and line shapefiles.US Census Bureau TIGER/Line files – states, CBSAs, states, counties, tracts, blocks, ZCTAs.Statistics Canada Census Cartographic Boundary Files (CBFs) – provinces, MSAs, federal electoral districts, tracts, dissemination areas.Geocoding business and survey data (that may not have been intended to be geocoded in the first place).But I’m not a GIS analyst! I don’t have/can’t afford/don’t have time to learn GIS software!.Existing data may not contain precise location data.Many data analysis projects do not start out with spatial analysis in mind (e.g., secondary data analyses).Gravelle (2014) “Partisanship, Border Proximity, and Canadian Attitudes toward North American Integration.” International Journal of Public Opinion Research, vol. ![]()
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