Wrapper around magick::image_append that allows specifying the background color when working with images of different width/height.
wrapped.image.append(images, stack = FALSE, background_color = "#FFFFFF")
a single magick image, the stacked version.
a vector/stack of magick images. See magick::image_blank
or other methods to get one.
whether to append vertically, default is FALSE / horizontally.
hex color string, the background color to use if the images have different sizes and one needs to be extended. Do not use color names like 'gray', which differ between R and magick.