Leaflet Map View

This node displays the given GeoJson data as an interactive map view.

The node supports custom CSS styling. You can simply put CSS rules into a single string and set it as a flow variable 'customCSS' in the node configuration dialog. You will find the list of available classes and their description on our documentation page

Options

View Configuration

Center Lat
The latitude value of the center of the map that is shown if no points are given or the reset view button is pressed.
Center Long
The longitude value of the center of the map that is shown if no points are given or the reset view button is pressed.
Zoom Level
The zoom level that is used if no points are given or the reset view button is pressed.
Map Provider
Provide a web address to a map provider. Per default open streets map is used.Leaflet provides a list of available provider https://leaflet-extras.github.io/leaflet-providers/preview/ .
Map Attribution
Provide a HTML snippet for the attribution which needs to be added at the bottom to give credits to the used map provider. This element can also be found from the list of providers at https://leaflet-extras.github.io/leaflet-providers/preview/ .

Interactivity

Enable view edit
If checked all edit controls selected below will be rendered in the view. Unchecking this option disables all edit controls.
Enable title/subtitle edit controls
Renders a text box to change the chart title and subtitle in the view.
Enable color mode edit
If checked, the color gradient can be toggled between continuous and discrete from within the view.
Enable 'show tool tips' option
If enabled, tool tips for the heatmap data cells and row labels can be toggled on/off from within the view.
Enable selection
When this option is checked, data points can be selected in the heatmap by activating the corresponding button and clicking on data cells. Extend the selection by holding down the Shift-key while clicking on points. The selection appears in an appended column of the data table.
Show reset selection button
If checked, a reset selection button will be displayed in the view.
Selection column name
Name of the appended column containing boolean values to indicate, whether a data cell was selected in the view or not.
Publish selection events
If checked, notifies other interactive views when user changes the selection in the current view. See also "Subscribe to selection events".
Subscribe to selection events
If checked, the view reacts on notifications from other interactive views that the selection has been changed. See also "Publish selection events".
Enable 'show selected rows only' option
If selected, a "show selected rows only" checkbox will be displayed in the view's menu.
Show selected rows only
If enabled, only the selected rows will be displayed.

Input Ports

Icon
Input GeoJson data.

Output Ports

Icon
An SVG image representation of the view.

Popular Predecessors

Popular Successors

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Views

Interactive View: Leaflet Map View
A Leaflet map view representation of the input data table.

Workflows

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Links

Developers

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Installation

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

v4.6

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

Plugin provider: KNIME AG, Zurich, Switzerland
Plugin version: 4.6.0.v202204081346
On NodePit since: 2022-06-11
Last update: 2026-01-08
KNIME versions: From v4.6 to v4.6

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