GoLang Gmagick::separateimagechannel

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PHP Gmagick::separateimagechannel

PHP original manual for Gmagick::separateimagechannel [ show | php.net ]

Gmagick::separateimagechannel

(PECL gmagick >= Unknown)

Gmagick::separateimagechannel — Separates a channel from the image

Description

public Gmagick Gmagick::separateimagechannel ( int $channel )

Separates a channel from the image and returns a grayscale image. A channel is a particular color component of each pixel in the image.

Parameters

channel

Identify which channel to extract: RedChannel, GreenChannel, BlueChannel, OpacityChannel, CyanChannel, MagentaChannel, YellowChannel, BlackChannel.

Return Values

The Gmagick object on success

Errors/Exceptions

Throws an GmagickException on error.