WMS Overlay

A WMS Overlay, where image data from a Web Map Service is displayed.

The WMS Overlay is a Grid overlay which can display an image result of a Web Map Service query of the project area. The advantage of the WMS Overlay being a Grid Overlay is that it can be used as input for other Overlays, such as the Combo Overlay, to apply filtering based on color values. To make the color filtering easier, the WMS Overlay has optional result types that only store one specific color channel.

Additional information displayed in hover panel

When clicking on a specific location in the map of the WMS Overlay, the hover panel gives additional information on the color (channel) value in that specific grid cell, depending on the result type.

Result Types

The WMS Overlay allows the RGBA color channels of the image data to be accessed as separate grids of data.

Name	Data	Value range
Red	Value of the red color channel	0-255 (0 is no red, 255 is maximum red)
Green	Value of the green color channel	0-255 (0 is no green, 255 is maximum green)
Blue	Value of the blue color channel	0-255 (0 is no blue, 255 is maximum blue)
Alpha	Value of the opacity channel	0-255 (0 is transparent, 255 is fully opaque)
Color	Composite value of all RGBA channels	n/a

Notes

• When set to use the Color result type, the Overlay's colors are not dictated by the Grid Overlay Legend. Instead, the actual color values are used.

How-to's

• How to add and remove an Overlay
• How to edit an overlay legend
• How to select a Web Map Service for a WMS Overlay

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Overlays

Categorization

Grid • Parent • Result Child • Result Parent • Result type

Default

City

Administrative

Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Vacancy

Environmental

Heat Stress • Traffic Density • Traffic Noise • Traffic NO2 • Livability

Water

Rainfall • Flooding • Groundwater • Subsidence • Watershed

Grid Calculation

Average • Combo • Distance • Sight Distance • Travel Distance • Inference • Iteration

Geo Data

GeoTIFF • WCS • WMS • Image • Area • Attribute • Function

Topography

Satellite • Digital Surface Model • Digital Terrain Model • Underground • Source

Network

Network Distance • Network Overview • Network Ownership