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- At the top of the Geoprocessing pane, click the Back arrow button.
- Within the Measuring Geographic Distributions toolset, click the Standard Distance tool.
- For ‘Input Feature Class’, use the drop-down menu to select the USStatesPopTimeline layer.
- In ‘Output Standard Distance Feature Class’, rename the feature class "USStatesPopTimeline_StandardDistance_1790".
- For ‘Circle Size’, use the drop-down menu to select1 standard deviation.
- For ‘Weight Field,’ use the drop-down menu to select the Pop1790 field.
- Ensure your Standard Distance tool parameters are configured as shown below and click Run.
The result is a circle centered on Maryland. Because this circle represents one standard distance of the 1790 population, we estimate that 68% of the US population lives within that circle in 1790.
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Road data is typically segmented , such that the length of road between each pair of intersections is a separate feature. In this tutorial, we are asking what is the average length of roadway with a single name, so the road layer was previously dissolved on the road name field, such that all road segments with the same name are were merged into a single feature. The roads layer was also clipped to approximately the extent of the Inner Loop.
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