Legacy ImageMagick Discussions Archive

Hi experts!

I have a script which creates pngs that i want to overlay.
With two pngs this works fine:

convert -composite -compose Multiply lay_3.png   lay_4.png out.png

No problem at all!

BUT
The problem is that with many pngs it doesnt work e.g. :

 convert -composite -compose Multiply lay_1.png  lay_2.png lay_3.png   lay_4.png out.png

will only overlay the first 2 pngs.

Idealy I want something like:

convert -composite -compose Multiply lay_*.png  out.png

to work, because some files e.g. lay_1.png and lay_3.png might be missing
How can it be done??

try

convert lay_*.png -evaluate-sequence multiply out.png

Thank you for your reply and time.

Your solution gave me a blank page, but somehow inspired me to find a solution doing:

convert  lay_*.png  -compose multiply   -repage 1200x1200-1-1 -flatten out2.png

which for my case worked fine.

Cheers!

overlay many pngs