image_modify_local2: Modify both a Subregion and the Whole of an Image
In plothelper: New Plots Based on 'ggplot2' and Functions to Create Regular Shapes

The function is similar to image_modify_local but with different parameters. It modifies both a subregion of the image and the whole image, and then combines them. The subregion can be chosen either by numeric values or by mouse click ,which is the same as image_modify_local.

1	image_modify_local2(x, FUN1, FUN2 = NULL, geometry = "click", rectangle = TRUE)

`x`	an image read into R by `magick::image_read` or an image modified by functions in the magick package.
`FUN1`	a function to modify a subregion of `x`. NOTE: the result of these functions must be of the same class as `x` and should not change the sizes of the subregion.
`FUN2`	a function to modify the whole image, which must not change the size of the image. If it is NULL (default), nothing will do to the whole image.
`geometry`	this parameter is different from the one used in package magick. Here, in this function, you can set `geometry = "click"` if you want to show which part is the subregion by mouse click (see function `image_crop_click` for how to use mouse click). Otherwise, you can use a length 4 vector with the exact order: left, right, top, bottom.
`rectangle`	if it is TRUE (default), the subregion is a rectangle area. If it is FALSE, the subregion is an irregular polygon area, and, now `geometry` is ignored, you must designate the area by mouse click.