problem with 'fx' operator

[jbeale]

I'm using ImageMagick 6.3.7 11/21/07 Q16 on Win XP. It generally works as expected, but I cannot get the 'fx' operator to work. Here is my attempt to use syntax taken directly from http://www.imagemagick.org/script/fx.php

C:\G>convert image.png -channel red -fx 'u/2.0' image.jpg
convert: unable to parse expression `u'.

I assume the demo syntax was correct at one time? Has the 'fx' functionality been removed from the 16-bit version, or the syntax is different now? Thanks!

[Bonzo]

With windows you need to use " not '

Code: Select all

convert image.png -channel red -fx "/2.0" image.jpg

[jbeale]

Ah, it is so. Thanks for the speedy reply! works now.