LED lighting system

A system to generate artificial sunlight with spectral characteristics that resemble natural sunlight, the system comprising:

• a computing device communicatively coupled to a plurality of lighting elements operable to emit white light in a range or color temperatures between 1800K and 6500K, wherein the computing device is operable to:
• present a graphical user interface panel which represents a floor plan and a respective spatial position of each of a number of lighting fixtures relative to the floor plan;
• receive user-selected input that specifies an enclosed shape on the floor plan which encompasses at least one of the lighting fixtures to select the lighting fixtures encompassed by the enclosed shape;
• and
• cause at least one of the plurality of lighting elements corresponding to the at least one lighting fixture encompassed by the enclosed shape to emit the white light in the range of color temperatures.