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Geospatial analytics with KNIME Data Connect events

This workflow shows how to use the nodes of the geospatial analytics extension to:

- Retrieve polygon boundaries,
- Create projections,
- Perform unary union operations to merge polygons,
- Extract representative points,
- Handle legend;
- Visualize events and registrations by regions in a map.

Geospatial Analytics with KNIME Data Connect events in 2022

This workflow shows how to use the nodes of the geospatial analytics extension to retrieve polygon boundaries, create projections, perform unary union operations to merge polygons, extract representative points, handle legend and visualize events and registrations by regions in a map.

Read in data and expand country abbreviations
Extract country polygons and create projections (from degrees to meter)
Merge country polygons to create macro-regions
Extract representative points from polygons and create buffer area around them
Handle legend and create dashboard
Read DC events and registrations by region in 2022
Table Reader
Concatenate
Entry for NA in legend
Get representative points
Geometry To Point
Project from degrees to meter
Projection
Geospatial dashboard
Define buffer distance
Math Formula
Unite polygons of macro regions
Unary Union
Loop End
Create buffer areaaround representativepoints
Buffer
Table Row to Variable
Group Loop Start
Input in lower port will be displyed on top in Geo View
Concatenate
Chunk Loop Start
Table Row to Variable Loop Start
Column Appender
From DACH and North America to countries
Expand region names
Loop End
Loop End
Top: for regional polygons Bottom: for point extraction
Create registration bins
Extract polygons
OSM Boundary Map
Duplicate Row Filter
From countries to DACH and North America
Group countries to regions

Nodes

Extensions

  • No modules found

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: roberto.cadili
Created at: 2023-01-12
On NodePit since: 2023-01-14
Last update: 2026-07-27
Created with KNIME version: v5.12.0
Tags: GeospatialgeopandaspolygonsGeospatial AnalyticsOSM

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