MATLAB Function Reference Volume 1: A - E - Bad Request

alpha
2alpha
Purpose Set transparency properties for objects in current axes
Syntax alpha(face_alpha)
alpha(alpha_data)
alpha(alpha_data_mapping)
alpha(object_handle,...)
Description alpha sets one of three transparency properties, depending on what arguments
you specify with the call to this function.
2-48
FaceAlpha
alpha(face_alpha) set the FaceAlpha property of all image, patch, and
surface objects in the current axes. You can set face_alpha to:
• a scalar – set the FaceAlpha property to the specified value (for images, set
the AlphaData property to the specified value)
• 'flat' – set the FaceAlpha property to flat
• 'interp' – set the FaceAlpha property to interp
• 'texture' – set the FaceAlpha property to texture
• 'opaque' – set the FaceAlpha property to 1
• 'clear' – set the FaceAlpha property to 0
See Specifying a Single Transparency Value for more information.
AlphaData (Surface Objects)
alpha(alpha_data) sets the AlphaData property of all surface objects in the
current axes. You can set alpha_data to:
• a matrix the same size as CData – sets the AlphaData property to the
specified values
• 'x' – set the AlphaData property to be the same as XData
• 'y' – set the AlphaData property to be the same as YData
• 'z' – set the AlphaData property to be the same as ZData
• 'color' – set the AlphaData property to be the same as CData