docbook-apps

  • 1.  Image resolution in print.

    Posted 05-15-2012 08:25
    Is there a description anywhere about how to deal with images of different dpi in the FO stylesheets?

    I've got an image that is 800x600, and as far as I can tell (identify doesn't say anything about dpi), it is a 300dpi image.

    I want that image to pass through to the FO and PDF as a 300dpi image, unchanged.

    Does anyone know the magic incantation of imagedata attributes that will cause this to happen? The combination I thought would work (width="100%" contentwidth="100%" scalefit="1", as suggested by Bob's book) gives me an image that is considerably smaller than I expected, and I'm not sure whether the problem is the wrong attributes or if there might be a problem with the image.

    Any help would be greatly appreciated.

    Best Regards,
    Dick Hamilton
    -------
    XML Press
    XML for Technical Communicators
    http://xmlpress.net
    hamilton@xmlpress.net






  • 2.  RE: [docbook-apps] Image resolution in print.

    Posted 05-15-2012 12:46
    When you say "identify", I assume you mean ImageMagick's identify. If the "-verbose" option doesn't give you a specific resolution for an image, then it doesn't have one. Most software will then default to 72DPI.

    You can set the resolution with the "mogrify" utility, like so:

    mogrify -density 300x300 -units PixelsPerInch foo.png

    Hope this helps.

    Regards,
    Paul Bort
    Systems Engineer
    TMW Systems, Inc.
    pbort@tmwsystems.com
    440 721 2233 (voice)
    440 290 2662 (fax)

    >
    Original Message


  • 3.  Re: [docbook-apps] Image resolution in print.

    Posted 05-15-2012 19:09
    Paul,

    Thanks for the explanation. You're right, it is the ImageMagick identify, and by now I should know to just add -verbose to any command that doesn't give me what I want:-).

    FYI, more in my reply to Bob.

    Thanks,
    Dick
    -------
    XML Press
    XML for Technical Communicators
    http://xmlpress.net
    hamilton@xmlpress.net



    On May 15, 2012, at 5:45 AM, Bort, Paul wrote:

    > When you say "identify", I assume you mean ImageMagick's identify. If the "-verbose" option doesn't give you a specific resolution for an image, then it doesn't have one. Most software will then default to 72DPI.
    >
    > You can set the resolution with the "mogrify" utility, like so:
    >
    > mogrify -density 300x300 -units PixelsPerInch foo.png
    >
    > Hope this helps.
    >
    > Regards,
    > Paul Bort
    > Systems Engineer
    > TMW Systems, Inc.
    > pbort@tmwsystems.com
    > 440 721 2233 (voice)
    > 440 290 2662 (fax)
    >
    >>
    Original Message


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