Gmagick::charcoalimage
(PECL gmagick >= Unknown)
Gmagick::charcoalimage — Simulates a charcoal drawing
Description
   public void Gmagick::charcoalimage
    ( float $radius
   , float $sigma
   )
  Simulates a charcoal drawing.
Parameters
- radius
- 
      The radius of the Gaussian, in pixels, not counting the center pixel 
- sigma
- 
      The standard deviation of the Gaussian, in pixels 
Return Values
The Gmagick object with charcoal simulation
Errors/Exceptions
Throws an GmagickException on error.