Avi Rana
GIS Portfolio
The topic of analysis in this Lab was elementary schools in Pierce County. We explored differences between urban and non-urban elementary schools and the extents of hypothetical elementary school feeder regions, which was created using ArcGIS spatial analysis tools and incorporating new vector and raster analysis tools/methods. We examined the size (area) of elementary school grounds, the location of elementary schools in Pierce County in regards to the Urban Area/Urban Cluster and the composition of the actual surface of the school grounds using the Impervious Surface raster dataset. The percent of impervious surface (paved ground or building footprints) for each school was added to the school grounds attribute table, and each school was classified as having a low, average, or high percentage of impervious surface on its grounds. In addition to using ArcGIS and ArcInfo tools for this lab, we worked directly with the Census data interface and the USGS National Map to download spatial datasets for use in the analysis.
Lab 3
Pierce County Elementary Schools Analysis
ArcGIS Tools + Methods
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In this map, analysis was conducted for elementary schools in Pierce County across four factors
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Urban/non-urban classification determined by using Select by Location
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Size (area) of school grounds classified as either 'small'', 'medium' or 'large'.
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Composition of school grounds determined by using Zonal Statistics
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Spatial extent of hypothetical feeder regions determined by creating Thiessen Polygons based on the locations of each school.
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School Grounds dataset for Peirce County was downloaded from WAGDA &Impervious Surface Data was downloaded from USGS National Map.
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The dark green polygons indicate that the school grounds are composed of mostly natural landscapes while the red polygons indicate that the school ground has a high percentage of impervious materials such as concrete and asphalt.
 Impervious Surface |  Urban vs. Non Urban School |
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