auto_trim: Trim automatically transparent area
In moodymudskipper/tweak: Modifies PNG images

Trim automatically transparent area

1 2	auto_trim(img, alpha_treshold = 0, brightness_treshold = 1, reverse = FALSE)

`img`	raster object
`alpha_treshold`	pixels with alpha under this value will have it set to 0
`brightness_treshold`	pixels with brightness over this value will have alpha set to 0
`reverse`	if reverse is true the darker pixels will have alpha set to 0

moodymudskipper/tweak documentation built on May 20, 2019, 8:49 a.m.

moodymudskipper/tweak index

Note that we can't provide technical support on individual packages. You should contact the package authors for that.

Description