Legacy ImageMagick Discussions Archive

Oh!

Now I understand the logic behind [fx:] and [pixel:] - thanks!

As I am currently working on it, I have a question about the -format option. According to the documentation, I can output a specific pixel's color channel by using, for example -format "%[pixel:p{x,y}.c] to get that pixel's cyan value, m for magenta and so on. But I am wondering, why my output gives ...

Oh, indeed, with your explenation of the edit it makes a lot more sense. I figured you're iterating through the var set by windows but I just had not understood what exactly the -evaluate and -channel parts do, but now it makes a lot of sense. I'll have to experiment around a bit with the output ...

Thank you for the very quick answer snibgo, could you explain to me what the command does, step by step? I tried to interpret it while reading the cli options on the IM website but I don't quite get my head around it 100%. I mean only the parts "-channel b -evaluate set %%z +channel". Thank you ...

Hello everybody, I have a question regarding the performance of ImageMagick. The system (a VPS from Amazon Web Services) I am running (the latest) ImageMagick on is: 1 Xeon E5-2650 CPU, 615MB Ram I have created a batch file, which runs this command: FOR /l %%x IN (0, 1, 255) DO FOR /l %%y IN (0, 1 ...

Cool.
I will simply work with the swapped values meantime.

Thanks for the great help

Could there be a bug with the variables used inside an -fx function? If I use this format notation: -format '%[fx:int(100*c)], %[fx:int(100*m)], %[fx:int(100*y)], %[fx:int(100*k)]' the results are for example this: RGB(0,255,255) -> "80, 24, 0, 0" RGB(255,0,0) -> "0, 82, 90, 0" RGB(255,0,255) -> "27 ...

You guys are amazing, thanks a ton.
I'll have to give this a try immediately when I get the chance

Hi again - sorry to rewake this post, but I'd have another question, if anyone could assist me. Is it possible to use the -write command in conjunction with the -format command, to store only the cmyk color values in a txt file, and then repeatedly adding new values to the same file? If at all ...

Hello again and thanks for the suggestions. I've gone your way, snibgo, and used a single convert command without saving intermediate files. This is what I'm currently doing: exec("convert xc:'rgb(0,255,255)' -profile AdobeRGB1998.icc -profile CoatedFOGRA39.icc -write txt:cmyk.txt -profile ...

I would not need the files, no. I've tried what you suggested and used this: $img_cmyk = exec("convert xc:'rgb(0,255,255)' -profile AdobeRGB1998.icc -profile CoatedFOGRA39.icc info:- "); Echoing the variable gives me this: xc:rgb(0,255,255) XC 1x1 1x1+0+0 16-bit ColorSeparation DirectClass 7.850u 0 ...

Hello snibgo, thanks a lot for your reply. I thought of a similar process already, but the one thing that keeps me back is the workload necessary for this procedure. Currently I am extracting the color values in this way: 1) create the 1x1 image with the respective color profiles exec("convert xc ...

Hi everybody, I've been working with Imagemagick for a while now (using it in a web project, thus using PHP to work with it), and I've ran into a problem. I hope a smart mind here can help me. I have to implement a color picker in my project (again, web based), which is no hassle at all. Done that ...