Recommended display color, tranparency percentage, of a special value

Dimap 1.1.3 SPOTView Profile

<ALPHA_LEVEL>

Dimap_Generic 1.0

Recommended display color, tranparency percentage, of a special value

Description :

The recommended display color of a special value is useful to deliver a kind of color palette (or look up table) when pixel intensity values have a special meaning such as a class number. This is particularly used in the case of thematic classified images.

The ALPHA_LEVEL gives the recommended transparency percentage of the current special value (RGBA color model). It ranges from 0.0 to 1.0. 0.0 means totally transparent and 1.0 means totally opaque (the default).

Example :
 
<Special_Value_Color>
<!-- Dirty green, opaque --->
   <RED_LEVEL >0.1</RED_LEVEL>
   <GREEN_LEVEL>1.0</GREEN_LEVEL>
   <BLUE_LEVEL>0.2</BLUE_LEVEL>
</Special_Value_Color>

or

<Special_Value_Color>
<!-- White, semi-transparent --->
   <RED_LEVEL >1.O</RED_LEVEL>
   <GREEN_LEVEL>1.0</GREEN_LEVEL>
   <BLUE_LEVEL>1.0</BLUE_LEVEL>
   <ALPHA_LEVEL>0.5</ALPHA_LEVEL>
</Special_Value_Color>
or

<Special_Value_Color>
<!-- totally transparent, color can be anything --->
   <RED_LEVEL >0.0</RED_LEVEL>
   <GREEN_LEVEL>0.0</GREEN_LEVEL>
   <BLUE_LEVEL>0.0</BLUE_LEVEL>
   <ALPHA_LEVEL>0.0</ALPHA_LEVEL>
</Special_Value_Color>

Datatype : t_ALPHA_LEVEL (based on ZeroOne)

ZeroOne (based on xsd:double)
Range : [0.0 ,1.0]

Possible parent(s)

Special_Value_Color