Legacy ImageMagick Discussions Archive

Splendid.

I've installed using on my Mac.

What's the process to update it to the correct beta release?

Here you go: (png file) https://we.tl/K2LkvI7LI1

magick largeImage_21Kx28K.png -monitor -crop 256x256 -set filename:f "tile_%[fx:page.x],%[fx:page.y]" "./tiledImageFolder/%[filename:f]_1.0.png"


Output:
Assertion failed: (resource_info.file >= 0), function RelinquishMagickResource, file ...

FYI:

Resource limits:
Width: 107.374MP
Height: 107.374MP
Area: 34.3597GP
Memory: 16GiB
Map: 32GiB
Disk: unlimited
File: 192
Thread: 1
Throttle: 0
Time: unlimited

I'm running on an i7, quad-core, with 16Gigs or RAM.
The image is 21000x28000px @ 8bit (256 colour, PNG8)
If memory is the issue, limiting it to use swap space is fine. This doesn't have to be a speedy operation.

What's Q8? I see Q16 noted in the version string.

I cannot share the image as it's ...

Using Version: ImageMagick 7.0.7-22 Q16 x86_64 2018-01-22

I'm trying to convert a very large image into 256x256px tiles. The command works on smaller images.

magick imageSizeOf21Kx28K_8bit.png -monitor -crop 256x256 -set filename:f "tile_%[fx:page.x],%[fx:page.y]" "./tiledImageFolder/%[filename:f]_1.0.png"


Results in:
Assertion failed: (resource_info ...

You've been very helpful GeeMack,

I tested:
magick kitten.png -crop 256x256 -set filename:f "tile_%[fx:page.x],%[fx:page.y]_%[w]x%[h]" "%[filename:f].png"

with results:
tile_0,0_256x256.png
tile_0,256_256x224.png
tile_256,0_256x256.png
tile_256,256_256x224.png
tile_512,0_128x256.png
tile_512 ...

Version: ImageMagick 7.0.7-22 Q16 x86_64 2018-01-22
On macOS, but will also be used on a Linux server.

I've tried the following with some success to output tiles of a large image:

magick image1.png -crop 256x256 parts-%02d.png

outputs tiles at 256x256px:
parts-01.png
parts-02.png
parts-03.png
parts-04.png


But I still have a challenge. The filename format needs to output each tiles dimensional ...