Legacy ImageMagick Discussions Archive

Interesting reply: i completely forgot the entire ppm issue.
Well, then i will try to go back to tiff, or some other format.

Thanks!

It's just that easy.
I do have a png input file (file.png), which is a 720 PPI one.
If i try these simple commands:

convert file.png file2.png
convert file.png -units PixelsPerInch -density 720 file2.png

By opening file2.png in Photoshop, it reports the resolution of the file is 719,988 pixels ...

Many thanks to Anthony and fmw42 for this interesting discussion!

For various reasons, in my servers i'm forced to use IM version 6.4.4 Q16. So, i can't use the beautyful "-alpha background" option.
However, considering i have to script it, i found a "quick and dirty" way out.

First, i create a ...

Looks interesting and promising!
I will do some tests. Will post again with results ASAP.

Thanks!

fmw42,

Thanks for your reply.
Unfortunately i had already tried those solutions, but with no luck.
Actually, the %A returns true or false: i just don't know if it's about the alpha channel being used, or only about the alpha channel being present.
In any case, it returns TRUE even if i try to ...

Hello,

I have a (perhaps) simple question, but i wasn't able to find a solution yet.
In a script i made, to get the number of unique colors of an image, i'm currently using this command:
identify +antialias -format "%k" myfile.png

For a pure B/W image with transparent white, the command ...

identify -list configure

Path: /usr/lib/ImageMagick-6.4.3/config/configure.xml

Name Value
-------------------------------------------------------------------------------
CC gcc -std=gnu99
CFLAGS -fopenmp -O3 -g -Wall -W -pthread -Wall -W
CONFIGURE @CONFIGURE_ARGS@
COPYRIGHT Copyright (C) 1999-2008 ...

I am doing the very same, using the latest version as well.
I am on a fedora system, and i tried identify on 7077.svg using 3 different versions.

If this may help, when i change version the command i use is simply:
rpm -Uhv --force --nodeps ImageMagick*
where ImageMagick* are base, perl, devel and ...

All details and a test file available in this thread:
viewtopic.php?f=1&t=12018

Thank you very much, i'll wait for news from there

I tried with both MSVG and RSVG, anyhow generally i use MSVG.
At the end, what i need is to determine the size of an SVG file, given the DPI. SVG files are provided by users, so i cannot know in advance the size them have.

If i add the -size option to the identify command, i simply get, as width ...

Hello.
I'm experiencing huge problems with SVG files.
First of all, some infos on my actual versions (btw, i tried also with the very latest one, and all the issues are exactly the same)


convert --version
Version: ImageMagick 6.4.2 08/02/08 Q16 OpenMP http://www.imagemagick.org
Copyright ...

Thank you for the additional infos.

I will try, thank you for the hint.
Anyhow wow... the improved algorithm needs so much power also for small images?

Thank you for your reply, but the point is different.

The GIF bug was in 6.4.2-1, i already know it's now fixed (as i wrote, i updated to 6.4.2-3 precisely because of this).
What i'm talking about is not properly an issue, but a question about the latest GIF implementation.
With the 6.4.2-3 i've ...