Legacy ImageMagick Discussions Archive

That works, thanks.
It still requires messing around with "fx" and variables, though...

I think I once saw a post by an IM developer during IM6 times, saying that a simple mechanism form aligning layers relative to each other (with gravity and offsets and everything) might be implemented in IM7 ...

-append makes it easy to vertically append two images such that they're horizontally aligned to the center:

magick granite: rose: -background transparent -gravity South -append result.png
https://i.imgur.com/PZ7jVWq.png

But now I want to have some overlap between the two images, say 10 pixels ...

I see.

Still seems weird that this would cause " -background transparent -flatten " to clear the whole image, doesn't it?

It's as if it treats the image without alpha channel as all-transparent, when it would make more sense to treat it as all-opaque, or alternatively throw an error message about ...

Turns out I can make it work in IM7 by explicitly setting -alpha on before the -flatten :

magick rose: -crop 50x50+30+20! -alpha on -background transparent -flatten -bordercolor black -border 5x5 b.png http://i.imgur.com/oorKctS.png

Is this intended behavior, then?
Or should it be reported as a ...

I don't know why you have "!" in "-crop", or what that might do.
It's what allows me to crop beyond the original image geometry and keep the extra areas.

From the docs : " By adding a exclamation character flag to the geometry argument, the cropped images virtual canvas page size and offset is ...

Here I crop an image beyond the original geometry, then flatten to preserve the new geometry created by the crop, and then add a border :
magick rose: -crop 50x50+30+20! -flatten -bordercolor black -border 5x5 b.png http://i.imgur.com/BWY2O50.png

So far so good.
But now I'd like to use ...

With copy it works:


Thanks for the help.

@snibgo: With atop the result isn't quite right, either:

OK, I managed to find a solution:
color="rgba(0,0,255,0.5)"
convert -size 100x -background none label:"Hello" -bordercolor none -border 20x20 -background "$color" -flatten label.png
http://i.imgur.com/yxwolJX.png

However, I'd still like to know why the behavior shown in the previous post ...

When using a solid background color, I can add padding to a label like this:

color="#0000ff"
convert -size 100x -background "$color" label:"Hello" -bordercolor "$color" -border 20x20 label.png

http://i.imgur.com/Jy5Id8X.png

But when using a translucent background color like...
color="rgba(0 ...

Consider a folder with a bunch of images with different dimensions. For testing purposes, we can use these input images:


mkdir frames
convert rose: frames/01.png
convert granite: frames/02.png
Now I'd like to combine that whole folder into a single GIF animation.

The following works, but it ...

@Santa911:

This works fine for me... This is on Linux, using a shell that is configured to use the "en_US.UTF-8" locale.
If it doesn't work for you, you probably need to make sure you're using a UTF-8 locale.

After an open-parenthesis, your list of images is empty. So you shouldn't have an operator like "-composite" because there are no images in the current list.
Somehow it still worked though - the images I uploaded in the top post, are the result I got and it clearly blended the rose with the red ...

Good to know, thanks!

Take, for example, a simple composite operation (blending a rose with a red background):
convert rose: \( -size 70x46 xc:red \) \( -compose Blend -define compose:args=50% -composite \) red.png
https://i.imgur.com/1co2XiC.png

So far so good. But now add a seemingly innocuous "-flatten" at the ...