Geospatial
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Evolution of GIS Attribute Data from Collection to Cleaning
Step by step guide to prepping GIS attribute data, from data collection to cleaning, in the context of an Azavea Summer of Maps project completed for the Pennsylvania Horticultural Society.
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Evolution of GIS Attribute Data from Collection to Cleaning
Step by step guide to prepping GIS attribute data, from data collection to cleaning, in the context of an Azavea Summer of Maps project completed for the Pennsylvania Horticultural Society.
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Five Technology Trends Every Nonprofit Needs to Know
We sought to identify 5 actual technology trends (not just buzz) that will have a significant impact on the nonprofit sector.
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How to Manipulate Big Data for Use in ArcMap
How to use the open source program PGAdmin to prep large data sets for use in ArcMap.
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Using Raster Analysis in ArcMap to Create a Normalized Weighted Risk Index
Learn how to conduct a raster analysis in Esri Arcmap to create a normalized weighted risk index, explained in the context of an Azavea Summer of Maps project completed for the Delaware Valley Association for the Education of Young Children.
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Accounting for Uncertainty with Empirical Bayes Smoothing
In this blog, we describe our experience accounting for uncertainty with empirical bayes smoothing.
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Using GTFS Data to Generate Bus Routes with Travel Time
We outline our work on a tool that allows the DPRโs GIS department to input the type of recreation (such as playgrounds, basketball courts, swimming pools, etc.), buffer around those locations and summarize the population within those buffers using GTFS data.
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Applying Map Algebra – Part 2
This is the second in a series of articles on applying Map Algebra to solving problems. In the last installment, I discussed beginning to develop a habitat model as an example through which to apply map algebra. Now that there is a defined study area, it is time to dig into the model itself.
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Applying Map Algebra – Part 1
Over a series of blog posts, we will take a look at map algebra functions (that are currently or will be soon incorporated into GeoTrellis) by creating a site suitability model using wildlife habitat preferences.
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Does PA's new voter ID law impact groups differently by ethnicity?
In this blog, we provide some background and analysis around PA’s new voter ID law and how it differently impacts ethic groups.