Legacy ImageMagick Discussions Archive

I have just installed ImageMagick and try to use MagcikWand,
have successfully compiled the first sample.

But wenn i try to test it - make a thumb from png, come an error:
no decode delegate for this image format

By tipping: result: It looks like i haven't PNG support?
What i miss?
I'm on SuSE 10.1 64

ImageMagick relies on delegate libraries to support some image formats such as PNG. When your ImageMagick distribution was built, the PNG library or its headers were unavailable so PNG support was not included. If you are building ImageMagick yourself, make sure both the PNG libraries and headers are installed. Next type

• cd ImageMagick-6.3.9
  ./configure

Read the output and make sure the PNG delegate library is detected. If not, see config.log to find out why and fix the problem and try configure again. Once its detected, simply build and install ImageMagick

• make
  make install

You should now be able to read and write PNG images.

Yep, the headers

thanks a lot

Hi,

here I have found that

SVG : Scalable Vector Graphics : Requires libxml2 and freetype-2. Note that SVG is a very complex specification so support is still not complete.

Can't i realy work with SVGs?

The statement is if you use the internal svg code. You can link in the librsvg product, which fixes most of the problems. The only problem with building this into ImageMagick is your build machine must have the minimum package installed for it to run. Even if you have the correct version in your lib path, configure only looks in the package database. If you get librsvg into ImageMagick, you will find much better svg support.

I need just to make a simple modification, such as to change the color for a given polygone.

As fas as I understand, I can use a C xml parser to do this and write directly into .svg file, and then, from command-line, convert from svg to png?

tsdineen wrote:The statement is if you use the internal svg code. You can link in the librsvg product, which fixes most of the problems. The only problem with building this into ImageMagick is your build machine must have the minimum package installed for it to run. Even if you have the correct version in your lib path, configure only looks in the package database. If you get librsvg into ImageMagick, you will find much better svg support.

If you just want to convert svg to png, then the rsvg tool does that and uses the librsvg with more svg functionality. They also, have rsvg-view to view svg files. I link in librsvg to ImageMagick, because I need more conversions than just that and want the maximum functionality.