Size Property

The size property enables to set a point size to a constant value or to scale it according to a variable.

• Size Unit: Choose here if you prefer to display the points with a size unit in Pixel or in Ground Unit. In the first case, each symbol will remain the same size if you zoom/unzoom. In the second one, the symbol has a real space size. Its unit size is expressed using the length unit defined in the Setting up Preferences.
• Select the option Constant Size and enter a value or select Scale Variable.
• If Scale Variable is activated select a variable and enter the corresponding sizes for the minimum and maximum. Define also a size for the undefined values. Use the button to set minimum and maximum values corresponding to the minimum and the maximum of the variable.