Workshop #3: Creating Features in ArcGIS (part 2) and
In the last workshop we learned how to create different types of spatial data – points, centroids, and buffers. Today, we will learn how to do one more type of trade area analysis – Thiessen Polygons. Contrasted against buffers, each presents a different way of determining the extents of a stores traded area, which can have different implications for analysis. Once these methods have been used, you could use them to create a map similar to the one you made last week. However, due to time constraints you will just have to submit a screenshot of your work at the end of the workshop to get the completion grade.
A. Getting Started
B. Creating Thiessen Polygons
C. Spatial Joins
The last tool you will learn about is spatial joins. This tool allows information to be consolidated or transferred between layers – even if they are of different types – based on spatial proximity. This final section will show you how to use this two ways.
C1. Spatial Join
C2. Calculating the Sum of Values of Points Within a Polygon using Spatial Join
C3. Saving the Data
Now that we have created this new spatial data file, we need to save it!
This process can be done with the buffer layers as well.
For this Workshop, export the attribute table as a text file and upload it to D2L to receive the completion grade.
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