(No version information available, might be only in CVS)
ImagickPixel::getColorValue — Gets the normalized value of the provided color channel
This function is currently not documented; only the argument list is available.
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Retrieves the value of the color channel specified, as a floating-point number between 0 and 1.
The channel to check, specified as one of the Imagick channel constants.
The value of the channel, as a normalized floating-point number, throwing ImagickPixelException on error.