Stack two images side by side using Wand

Question

How do I stack two images side by side, in wand (python)? Composite method is available, but it puts one image on top of another. I want something like numpy.vstack .

Answer 1

The wand.image.Image.composite method accepts top & left parameters. Not much effort to composite image side by side...

with Image(filename="rose:") as left:
  with Image(filename="rose:") as right:
    with Image(width=left.width+right.width,
               height=max(left.height, right.height)) as output:
      output.composite(image=left, left=0, top=0)
      output.composite(image=right, left=left.width, top=0)
      output.save(filename="hstack.png")

... or stacked ...

with Image(filename="rose:") as top:
  with Image(filename="rose:") as bottom:
    with Image(width=max(top.width, bottom.width),
               height=top.height + bottom.height) as output:
      output.composite(image=top, left=0, top=0)
      output.composite(image=bottom, left=0, top=top.height)
      output.save(filename="vstack.png")

Of course you may be able to simplify the examples above, or use wand.api.library to implement MagickAppendImage .