On Mon, 16 Feb 2009 10:57:06 -0800
Fred Weinhaus <[email protected]> wrote:

| Just set the density. You have to compute/convert dpi (dots or pixels 
| per inch) to dpc (dots or pixels to cm).
| 
| See http://www.imagemagick.org/script/command-line-options.php#density
| 
Fred is correct.  You calculate and set the -density and set the -units
parameter so as to fit the image into the real-work size specified.

A image of ANY number of pixels can thus be set to ANY real-world size
without any actual resizing.   They are only settings!

Of course the actual printing device may do its own pixel level resizing
when actually outputting the image. But then it knows what pixels resolution
(density) it needs and should adjust things accordingly.

IM itself has no idea if the physical requirements of the output device.
Be it a 1200 pdi color printer, or a 120 dpi monitor!


  Anthony Thyssen ( System Programmer )    <[email protected]>
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   Would the pilot of the 747 parked outside the window, please
   return to the cockpit.   You've left your lights on!
                           -- Tokyo Airport Announcement -- Digimon
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/
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