Estimate Line Density

Overview

Estimate a density raster from input line features. The result represents the amount of line features per unit area within the search radius. During conversion from vector features to raster representation, resolution, cell alignment, field types, and NoData rules directly affect result accuracy.

Use Cases

• Analyze road, river, pipeline, or power-line concentration across an area.
• Use line density as an input to accessibility, risk, or service-coverage analysis.
• Improve efficiency for batch processing, repeated runs, or standardized delivery.

Parameters

Parameter	Description	Notes
Input line feature vector file	Path to the input line feature vector file	Required
Search radius	Search radius for density calculation	Required; default: 1000
Cell size	Cell size of the output raster	Required; default: 30
Weight field	Optional weight field for density calculation	Optional
Raster area	Coordinate system, resolution, and extent settings for the output raster	Optional
Output density raster file	Output density raster file	Required

Steps

1. Start the tool: Open Geoprocessing Toolbox → Spatial Analysis Tools > Density Analysis, then start the Estimate Line Density tool pane.
2. Prepare input: Select the Input line feature vector file, Weight field, and Raster area as needed, then confirm that the data is complete and readable.
3. Set core parameters: Configure Search radius, Cell size, and Weight field based on the analysis goal.
4. Set output: Specify the Output density raster file and confirm that the output path, format, and naming rules meet downstream requirements.
5. Run and inspect the result: Click Run, then check whether the density range, spatial distribution, and raster extent meet expectations.

Notes

• Use a projected coordinate system when the radius and cell size are distance-based; avoid treating longitude and latitude as planar distances.
• Search radius and cell size strongly affect smoothness and detail. Larger values create smoother density surfaces.