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 pixels used for interpolating a single screen pixel when the screen resolution is lower than 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 1.00 The color describes the transparent color and the number determines the variance to extend it to nearby colors (0.0 means just the color, 1.0 means the 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

Function	Summary
GetImageLayerOptions()	Gets the display and interpolation specifications of an image layer