When you install IM from source, you need to install all the image types delegate libraries such as for png, jpg, gif etc. and then possibly recompile IM.
see http://www.imagemagick.org/download/delegates/ but you may want to search the web for more current versions. You can see what delegates IM knows about by typing: convert -list configure and looking at the line starting with DELEGATES On my systems, I have installed the following. DELEGATES bzlib fftw fontconfig freetype gs jpeg jng jp2 lcms lqr openexr png tiff x11 xml zlib You just need to install the ones you want to use, such as png. >I installed ImageMagick on cygwin. > >$ convert --version >Version: ImageMagick 6.5.6-0 2009-09-14 Q16 http://www.imagemagick.org >Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC > >But I got the following error. > >$ convert test.png -crop 50%x100% +repage test_vertical_%d.png >convert: no decode delegate for this image format `test.png' @ >constitute.c/ReadImage/503. >convert: missing an image filename `test_vertical_%d.p >ng' @ convert.c/ConvertImageCommand/2819. _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
