Learn more about MATLAB

alpha - Set transparency properties for objects in current axes

Syntax

alpha alpha(object_handle,value) alpha(face_alpha) alpha(alpha_data) alpha(alpha_data) alpha(alpha_data_mapping)

Description

alpha sets one of three transparency properties, depending on what arguments you specify with the call to this function. For available arguments, see Inputs.

alpha(object_handle,value) sets the transparency property only on the object identified by object_handle.

Inputs

Face Alpha

alpha(face_alpha) sets the FaceAlpha property of all image, patch, and surface objects in the current axes. You can set face_alpha to

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 Transparency 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

matrix the same size as `CData`	Set 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`.
`'rand'`	Set the `AlphaData` property to a matrix of random values equal in size to `CData`.

AlphaData (Image Objects)

alpha(alpha_data) sets the AlphaData property of all image objects in the current axes. You can set alpha_data to

matrix the same size as `CData`	Set the `AlphaData` property to the specified value.
`'x'`	Ignored.
`'y'`	Ignored.
`'z'`	Ignored.
`'color'`	Set the `AlphaData` property to be the same as `CData`.
`'rand'`	Set the `AlphaData` property to a matrix of random values equal in size to `CData`.

AlphaDataMapping

alpha(alpha_data_mapping) sets the AlphaDataMapping property of all image, patch, and surface objects in the current axes. You can set alpha_data_mapping to

`'scaled'`	Set the `AlphaDataMapping` property to `scaled`.
`'direct'`	Set the `AlphaDataMapping` property to `direct`.
`'none'`	Set the `AlphaDataMapping` property to `none`.