Legacy ImageMagick Discussions Archive

thanks for the links and examples, your help is incredibly useful for everything I wanted to achieve!

@snibgo,
thanks so much! your example got me there, all I had to really do was negate the starting image so I could make the right part transparent

I ended up with:
convert -size 1280x720 gradient: -function Polynomial -4,4,0 -evaluate Pow 0.9 -negate +write g0.png \( +clone -fill Black -colorize ...

hello, i'm trying to make a vertical gradient that goes from black to transparent to black

so far, I've been using this command:
convert -size '1280x720' gradient: -function Polynomial -4,4,0 -evaluate Pow 0.9 gradient_test_01.jpg

which goes from black-white-black because of the -function, but ...