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Category Archives: GIS Analysis
Geospatial Topology, the Basics
The concept of topology isn’t something that every spatially enabled person fully understands. That is OK, because I too had to learn (and relearn) how spatial topology works over the years, especially early on back in the ArcView 3.X days. … Continue reading
Posted in GIS, GIS Analysis, Spatial Analysis
Tagged Geospatial Topology, GIS Analysis
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Blogs for Wannabe GIS Programmers (like me)
Anyone who knows me and works with me on a regular basis knows that I am not a developer. I am a geographer who develops code for visualization and analysis applications that will hopefully work. In our line of work … Continue reading
Spatial Random Sample, Sample
Often, when performing spatial analysis, one may need to execute some type of sampling across space. For example, one may need to sample locations across a geographically continuous surface (think soils, anything weather related, etc.). A spatial random sample can … Continue reading
GISDoctor Spatial Analysis Post Series
There once was a well know GIS blog post that compared geographic information systems to word processors. No matter what you think about the post we will always need people who are skilled at “writing” and have something to “write” about. As … Continue reading
Posted in GIS, GIS Analysis, Open Source GIS, Spatial Analysis
Tagged Spatial Analysis
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One Million Points
I am working on a couple projects and I need to generate some random points across defined bounding boxes. I have the basic code worked out in python and I am testing the results. Just for kicks here is a … Continue reading
Posted in GIS, GIS Analysis, GIS Software
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Spatial SQL for the Geographer – Part 3 – More Basic Spatial SQL Scripts
The tutorial continues… If you haven’t already read the first three parts of this guide check out: Spatial SQL for the Geographer – Introduction Spatial SQL for the Geographer – Part 1 – Welcome to Spatial SQL Spatial SQL for … Continue reading
2012 – The GISDoctor.com Year of Spatial Analysis
With GISDoctor.com entering its second year in a blog format I have some plans for the site that will hopefully keep readers interested and bring in new readers. Here is what I am planning for 2012! Spatial Analysis - As a … Continue reading
Posted in Conferences, GIS, GIS Analysis, GIS Software, Mash Ups, Spatial Analysis
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Spatial SQL for the Geographer – Part 2 – Basic Spatial SQL Scripts
The tutorial continues… If you haven’t already read the first two parts of this guide please read: Spatial SQL for the Geographer – Introduction Spatial SQL for the Geographer – Part 1 – Welcome to Spatial SQL The first two … Continue reading
Spatial SQL for the Geographer – Part 1 – Welcome to Spatial SQL
Before we begin I would like to make it clear that learning all the capabilities and limitations of SQL Server and Spatial SQL cannot be covered in three short lessons. If you believe you might need some more training please … Continue reading
Spatial SQL for the Geographer – Introduction
During WhereCamp Boston one of the impromptu break-out sessions was on spatial SQL. In WhereCamp fashion the person who proposed the session was looking to learn more about spatial SQL and its many uses. With about 20 people in the session … Continue reading