problems since upgrading

[barells]

I recently upgraded to the latest ImageMagick - 6.8.9, from 6.2.x, and have since noticed some odd things.

The biggest perplexity is in cropping. I am converting a ps file to png, like so:
convert -resize 512x512 -crop 256x256 image.ps image.png

Previously, this created 4 images that were each 256x256. However, now with the latest version, I am getting 9 (3x3) unequally sized dimension images. I am thoroughly confused.
Can someone offer any suggestions?

I've noticed some other differences as well, but this is the one I'm having trouble getting around.

[snibgo]

There have been many changes since that very old version.

Syntax ordering is now more logical: read an input, process it, output it. Thus:

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convert image.ps -resize 512x512 -crop 256x256 image.png

Old syntax may work, but don't count on it.

What size is the image after "-resize 512x512"? If it was exactly 512x512, the crop should give four equal-size images. This will happen only if the input is square. To force the resize to be exactly 512x512, use a "!" suffix:

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convert image.ps -resize 512x512! -crop 256x256 image.png

Your shell may need the "!" to be escaped.

See: http://www.imagemagick.org/script/comma ... ptions.php and http://www.imagemagick.org/script/comma ... essing.php etc.

[barells]

Okay, I see.

So, i was successful in creating the equal 4 images like so:

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convert sst_graph.ps -resize 512x512 -crop 256x256 sst_graph.png

But, that was a simplified version of what I need to do. It looks like when I add in -trim, it doesn't work the way I expect:

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convert sst_graph.ps -trim -resize 512x512! -crop 256x256 sst_graph.png

I need to trim the white space before resizing. Thanks for your help!

[barells]

I see that I need to add the +repage, since the trim option caries over the original dimensions... I think I"m good now!