Setting an alpha channel when constructing an ImagickPixel

Question

I am new to using ImageMagick. I am using the latest imagick extension (3.1.0rc1) with PHP. However, the documentation for imagick seems to be somewhat sparse. I want to create an ImagickPixel object with an alpha channel. The documentation states that these are some valid color values to pass to the constructor: `"blue", "#0000ff", "rgb(0,0,255)", "cmyk(100,100,100,10)", etc`. I know that it is possible to retrive the alpha value of an ImagickPixel using `getColorValue(imagick::COLOR_ALPHA);`. So, how can I set an rgb color with an alpha channel during initialization of the object by passing to the constructor?

Accepted Answer

Looks like the way to do it is to just use rgba:

```
$myImagickPixel = new ImagickPixel("rgba(250,15,150,0)"); //Where the last digit is the alpha and 0 is transparent and 1 is fully opaque.
```

Setting an alpha channel when constructing an ImagickPixel

Solution

Problem