Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
convert -size 1024x1024 xc:#E9A11A \( gradient:white-black -alpha set -channel A -evaluate set 15% \) -compose overlay -composite -resize 1137x116\! \( -size 1200x1 xc:white -alpha set -channel A -evaluate set 90% -gravity south \) -compose overlay -composite \( -size 1200x1 xc:black -alpha set -channel A -evaluate set 90% -gravity north \) -compose overlay -composite hello/hello/hello/page.png
The linux command runs fine and generates what looks like a fairs simple vertical gradient with a single pixelish line at the top and a yellowish line at the bottom. However you are missing at least a final -composite command (after your final -compose!).
I can see no differences in the final images generated from the line you gave with all its compositions, and what I generated using above. The color values was extracted directly from the image you code generated on my linux box.
Thank you ! my purpose is generating the borders with similar color of background,while I only need to set the border color to be black or white,no need to appoint the special color.
if it can be generated in linux, it will be problem of window system. Thank you again for help .