SDFclient

SDFclient is a specialist package for building and displaying models of the luminance of the sky.  There are a variety of modelling methods available, and this tool provides a way of comparing them for your location on the earth.  SDFclient uses the SDF modelling framework for representing complex surface models.  Once created models can be saved and re-loaded for viewing as required.

The user control panel looks like this:

The user is able to select a location/time for the model, and the sky model type from a range of standard sky model options.  Once the model is created it can be viewed in various ways.

As a contour model showing the iso-luminance contours:

As a graph showing the luminance levels on a profile across the sky dome:

As a shaded surface:

Or, as a 3-D model that can be rotated to view: