Photometer Properties

The photometer properties can be changed in the Object Info palette.

 

Parameter	Description
Z	Sets the elevation value of the photometer; illumination values vary depending on the elevation
Show Elevation	Select to display the object’s elevation along with the photometric value
Show Zero	Select to display an elevation value of zero
Calculate using only visible beams	Select to determine the photometric value based on only instruments with Draw Beam selected; this reduces calculation time
Use Threshold Settings	Select to display the object in a color that corresponds to the specified threshold ranges
Lower Threshold	Specify the illumination value at the lower end of the range; values below this level are displayed in green, and values between the lower and upper threshold are displayed in tan
Upper Threshold	Specify the illumination value at the upper end of the range; values above this level are displayed in blue
Reset	Refreshes the photometer display after changes have been made to the lighting conditions