4/8 Bits Indexed+Alpha PNG?

[goruka]

Hi! I´d like to know if is there any way in imagemagick to generate PNGs using indexed colors (4 or 8 bits indices) with palette data that supports varying alpha opacity (not just visible/invisible pixel).

Basically, take any image with alpha channel, and downsample to N colors WITH alpha and save to PNG. I know PNG supports this, but evertything i try to convert to indexed in imagemagick gets rid of the alpha..

thanks!

[fmw42]

Not currently as far as I know.

see

http://www.imagemagick.org/Usage/formats/#png_formats
and
http://www.imagemagick.org/Usage/formats/#png_write