Points to Line

Overview

The Points to Line tool connects a series of discrete spatial points into continuous line geometry. This process is commonly used to reconstruct movement tracks from time-series positioning points or to convert survey sampling points into physical boundaries.

Use Cases

• Movement track reconstruction: Connect GPS sampling point sequences from vehicles, pedestrians, or wildlife into complete movement path lines.
• Linear feature generation: Reconstruct geographic feature boundaries from survey point sets collected along rivers or road edges.
• Contour drafting support: Connect discrete points with observed values, such as temperature or elevation, in a specific order to create base contour lines.
• Utility network modeling: Automatically generate pipe segment line features based on the logical connection order of manholes or inspection points.

Parameters

Parameter	Description	Notes
Input features	The point dataset to convert to line features.	Must be point features.
Line field	The field used for logical grouping.	Points with the same field value are connected into the same line.
Sort field	Determines the order in which points are connected.	Usually a timestamp or sequence number field.
Close line	Specifies whether to connect the end point to the start point.	Enable this option to generate a closed ring.
Output feature dataset	The generated line features.	Supports common vector formats.

Steps

1. Start the tool: Open the Geoprocessing Toolbox, go to Vector Tools > Feature Conversion, and start the Points to Line tool pane.
2. Set the input: Select the Input features that contain coordinate points.
3. Configure parameters: Select Line field, such as grouping by device ID device_id; specify Sort field to ensure the correct connection order, such as sorting by gps_time; then decide whether to enable Close line.
4. Configure the output: Set the output path and output file name.
5. Run the tool: Click Run and review the generated line result.

Notes

• Order sensitivity: The sort field is critical. If no sort field is specified, the system connects points in their physical storage order in the attribute table, which may produce incorrectly connected lines.
• Large dataset recommendation: Before running large-scale line generation, iXGIS recommends running Repair Geometry to ensure that point coordinates are valid.
• Coordinate system consistency: The generated line features inherit the coordinate system of the point dataset. Run the tool in a projected coordinate system when accurate line segment lengths are required.