Legacy ImageMagick Discussions Archive

If you're using the same version of ImageMagick with RMagick that you're using from the command line, then the same image occupies the same amount of memory no matter how you access it. The difference is that when the command completes and the process terminates all memory associated with the proces...

In RMagick you can get the effect of +repage by adding true as the last argument to #crop, or by setting the page= attribute to a rectangle object having 0 for the x, y, width, and height attributes. img.page= Rectangle.new(0,0,0,0) For RMagick-specific questions you can usually reach me at rmagick@...

I'll give that a try. Thanks for the tip.

The following program tries to replicate the SVG "Skew" example here http://www.w3.org/TR/SVG11/coords.html#TransformMatrixDefined , but the X axis in the skewY coordinate system is wrong. Here's the target image: http://www.w3.org/TR/SVG11/images/coords/Skew.png Here's the output from my ...

All ImageMagick memory allocations and frees are handed off to Ruby. This means that Ruby's GC knows about all the memory that's in use and free and can run garbage collections accordingly. Image objects are just like arrays, hashes, or any other Ruby objects. See my post on the RMagick Hints and Ti...

RMagick 2.10.0 can use the Ruby garbage collector. You must build it with ImageMagick 6.5.3-10. See my post on the RMagick Hints and Tips Forum on RubyForge: http://rubyforge.org/forum/forum.php?th ... um_id=1618.

Installed 6.5.1-9. Everything looks fine. Thanks again.

Thanks! :D

Is it useful or even possible to set a fuzz value before calling MagickCompareImageChannels? Anthony's examples page clearly shows how to use the -fuzz option in the compare command, but I can't figure out how to specify a value for fuzz before calling MagickCompareImageChannels.

Thanks!

How do I set the colorspace prior to reading an image using the MagickWand API? I tried using but I'm not having any luck. I see the MagickSetImageColorspace method, but it's not listed in the HTML doc.

Thanks. Can do.

A MagickWand API question: If I'm reading the source correctly, the output from MagickIdentifyImage is always the verbose output. Is there a non-verbose version of this method?

Perfect. Thanks! I agree, this code is better than a convenience method.

I've been looking at the MagickWand API and I have two questions. 1. I see the CloneMagickWand method makes an exact copy of a wand. Given a wand with several images, how would I go about creating a new wand that contains a subset of those images? For example, given wand A containing 4 images, creat...