enhancement request +transparent
Posted: 2009-04-23T09:56:12-07:00
This is not urgent on my part, just a suggestion for completeness for the future.
But, it might be nice to have a +transparent somecolor option to turn all colors transparent except the one specified.
convert rmgcb.png +transparent green1 rmgcb_none_green_none.png
convert: unable to open image `green1': No such file or directory @ blob.c/OpenBlob/2439.
There is a current workaround as pointed out by Anthony at viewtopic.php?f=1&t=13602
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convert rmgcb.png \
-channel A -transparent green1 -negate +channel \
rmgcb_none_green_none.png

But, it might be nice to have a +transparent somecolor option to turn all colors transparent except the one specified.
convert rmgcb.png +transparent green1 rmgcb_none_green_none.png
convert: unable to open image `green1': No such file or directory @ blob.c/OpenBlob/2439.
There is a current workaround as pointed out by Anthony at viewtopic.php?f=1&t=13602

convert rmgcb.png \
-channel A -transparent green1 -negate +channel \
rmgcb_none_green_none.png
