SetImageLayerOptions()

Sets the display and interpolation specifications of an image layer.

direction = SetImageLayerOptions(string layer_name, array options)

Argument	Contents
layer_name	The name of the image layer

An options array with image parameter specifications.

Specification	Type	Contents
Contrast	Real	A real number in the range 0(white) to 1.0 (normal)
Scale Down Smoothing	Integer	The maximal number of original pixelsused for interpolating a singlescreen pixel when the screen resolution is lowerthan the original image resolution
Interpolation Mode	Integer	Indicates the method used for interpolating extra pixels when the screen resolution is higher than the original image resolution. Possible modes: 0 or 1 - Nearest Neighbor 2 - Bilinear 3 - High Quality Bilinear 4 - Bicubic 5 - High Quality Bicubic
Transparency	Real	A value in the range 0 (opaque) to 1(fully transparent)
Transparent Color	Array	A two-element array where the first element is a Color and the second is a number in the range 0 to 1.00The color describes thetransparent color and the number determines the variance to extendit to nearby colors (0.0 means just the color, 1.0 meansthe entire color spectrum).

scale_down_smoothing <= 1 means no smoothing
Each screen pixel is a copy of a single original pixel. For any other value of scale_down_smoothing = n, each screen pixel is a mixture of up to n*n original pixels
Options not provided are not changed.
To clear transparent color, set a "Transparent Color" specification of an empty pair of values ({null, null}).

// Set the current image layer to be 75% transparent
SetImageLayerOptions(GetLayer(), {Transparency:0.75})
RedrawMap()

Error Type	Meaning
NotFound	The layer does not exist