Please explain what you mean by "remove"? You must change the color to something, but it can be another color or transparent. Do you mean transparent? Do you mean black?
Also what do you mean by the range FFFFFF to 0000FF? This is the equivalent of white to blue, but this is ambiguous, since it includes FF00FF which is magenta. Are you saying that you only want to remove the blue channel or make all intensities of pure blue become black or transparent or make all saturations of pure blue become black or transparent. The following will make the blue channel into black and then next one will make it transparent. convert logo: -channel blue -threshold -1 -negate logo_bluechannel2black.png convert logo: -channel blue -threshold -1 -negate -transparent black logo_bluechannel2none.png The following will make all saturations of pure blue into black and the next one will make all intensities of blue into black convert logo: -fx "u<=hsl(240,100%,50%)&&u>=hsl(240,0%,50%)?black:u" logo_bluesat2black.png convert logo: -fx "u<=hsl(240,100%,50%)&&u>=hsl(240,100%,0%)?black:u" logo_blueint2black.png But as you will see it changes all the colors and in the case of the logo: image, all are identical because the logo image has no pure shades of blue. If you try the same on http://www.fmwconcepts.com/misc_tests/grad_wedge.png you will see differences. >I need to remove all colors from/to from a gif FFFFFF:0000FF I am having >trouble with the commands can someone please help! >-- _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
