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TRANSPARENT BACKGROUND color at RMagick does not work properly

Dear experts,

I write an rmagick application.
The application supposed to give a wave effect to an image.

Everything is worked properly at localhost, but not at production server.

The not working part is the BACKGROUND color that supposed to be TRANSPARENT turn to BLACK.
I tried to set the background color to "none" / "transparent", but give transparent effect at localhost. But not at production.

Could you kindly advice?
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isuhendro
Asked:
isuhendro
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2 Solutions
 
isuhendroAuthor Commented:
sorry typo for this sentence
"I tried to set the background color to "none" / "transparent", but give transparent effect at localhost. But not at production."

should be
"I tried to set the background color to "none" / "transparent", that give transparent effect at localhost. But not at production."
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bobbit31Commented:
if i were to guess, the problem seems to be your installation of ImageMagick / GraphicsMagick (to which RMagick binds)... are there any differences b/w your local and production servers? (OS, processor, etc...)?
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isuhendroAuthor Commented:
thanks Bobbit,

i also guessed so, but i don't have much access to the production server, it's a hosting server
the difference is the rmagick version, for my localhost is 1.14.1 and the hosting server is 1.15.9

is there any setting in the rmagick to set parameter about transparancy?
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isuhendroAuthor Commented:
btw, the localhost is windows, and hosting is unix
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bobbit31Commented:
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isuhendroAuthor Commented:
Hi Bobbit31, you are such helper.. thanks..
This is the final solution that i got http://rubyforge.org/forum/forum.php?thread_id=18708&forum_id=33

Thanks again
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