Re: [GM-help] Can't seem to get -level to work

[Bob F. <bfr...@si...>]

>
> So there may be a documentation bug, because the manual implies that
> gamma is optional. Based on the manual, as far as I can tell, my usages
> were correct in what if only 2 values are given, they are the black and
> white points. While the program seems to be interpreting the second
> value as gamma. Am I confused, or is the documentation wrong?

The arguments are black point, gamma, and white point.  They need to 
be specified in order.  Your 2 value form requested a gamma correction 
of 230.

It may be that the order should have been defined differently but it 
is too late to change it now.

One might think that '10,,90%' should work, but it does not.

Bob
-- 
Bob Friesenhahn
bfr...@si..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/