Length

This node will add a new column named 'length' to the input data with the calculated length of each geometry in the units of the CRS. Length may be invalid for a geographic CRS using degrees as units. Use the Projection node to project geometries to a planar CRS before using this node. This operation is planar, i.e. the potential third dimension is not taken into account.

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

Options

Geometry column

Select the geometry column to compute the length.

Output

Group of settings that define the format of the result table.

Output column

Choose where to place the result column:

Available options:

  • Replace: Replace the selected input column with the result.
  • Append: Append a new column with the name provided below.
New column name

The name of the new column that is appended if 'Append' is selected.

Input Ports

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Input table with a geospatial column to compute the 'length' for.

Output Ports

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Geo input table with additional 'length' column containing the length of each input geometry in the units of the CRS.

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Views

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Workflows

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Links

Developers

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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: 2023-12-06
Last update: 2024-12-25
KNIME versions: From v5.2 to v5.2

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