Geospacial View (Simple)

This workflow generates a straightforward geospatial visualization highlighting locations within the city where chemicals (for this study, all Volatile Organic Compounds, or VOCs) have been detected.

To use the workflow, download and run it on the KNIME Analytics Platform. For optimal performance using the Geospatial Analytics extension, make sure you are using version 4.7.4 or higher.

The input data has been saved in the workflow data area, simply execute the components "Read Dataset" to obtain the necessary data.

The "Size Settings" functionality is utilized to enlarge the points proportionally according to the concentration of the detected chemical (ug/m3).

Additionally, the "Marker Color Column" feature is employed to categorize the Health Risk Value (HRV) into different risk classes, visually represented by distinct colours, enabling the immediate identification of potentially hazardous areas.

External resources

• Air Quality Survey