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Directed Bezier Curve

This node generates a GeoSeries containing geometries representing smooth Bézier curves between origin and destination points. The Bézier curves are created based on user-defined parameters, including the number of points, height scaling, and curve angle. This transformation is particularly useful for visualizing flows or movements in a more intuitive manner compared to straight lines.

The node is based on the GeoPandas project and uses the following related information and function:

Bézier curve

Options

Origin geopoint column: Select the geometry column that describes the origins.
Destination geopoint column: Select the geometry column that describes the destination.
Column name for result geometry: Specify the column name to define the Bézier curve.
Number of points: Specify the number of points to define the Bézier curve.
Height scale: Set the scale factor for the curve's height, controlling the distance of the curve from the straight line.
Curve angle (degrees): Define the angle that controls the shape and direction of the Bézier curve.

Input Ports

: Input table containing geometry columns representing origin and destination points.

Output Ports

: Output table with geometry columns representing Bézier curves connecting origin and destination points.

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Installation

To use this node in KNIME, install the extension Geospatial Analytics Extension for KNIME from the below update site following our NodePit Product and Node Installation Guide:

v5.2

A zipped version of the software site can be downloaded here.

Plugin provider: SDL, Harvard, Cambridge US

Plugin version: 1.3.0.202412051033

On NodePit since: 2024-12-11

Last update: 2024-12-18

KNIME versions: From v5.2 to v5.2

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