I see from this thread that perhaps you aren't understanding that it doesn't matter whether you have images or not, Leonard is right, forget USER UNITS, it has already confused you.
and 8.5 x 11 page, (Letter in America) is 612 x 792 points (8.5*72 x 11*72) This is NOT RESOLUTION!!!. it is only a measurement of xy units. The only thing you need to worry about for resolution is for your images. you never need to worry about page size and resolution, the are not dependent. If you want an image to be 72dpi at 3 inches by 3 inches, then suppy an image 216 x 216 pixels. (3*72). If you want an image to be 300dpi at 3 inches by 3 inches, then suppy an image 900 x 900 pixels. (3*300). Does that make sense? It's really simple once you get past the fact that USER UNITS and DPI are two seperate things only partially related. I hope this helps you Bill Ensley Bear Printing > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Franck > JACOB > Sent: Tuesday, May 31, 2005 4:37 AM > To: Leonard Rosenthol; itext-questions@lists.sourceforge.net > Subject: Re: [iText-questions] Pdf Resolution > > > thank you, if I understood what you said, if I don't have images in my > document, that's not a problem. If my document has images, I have > to adapt my > document size to the image with highest resolution in my > document. so I have > to adapt the font size of my text to the resolution, otherwise > the font size > would too small. is it correct? > > > > thank you > franck > > > > > Le Mardi 31 Mai 2005 12:26, Leonard Rosenthol a écrit : > > At 03:58 AM 5/31/2005, Franck JACOB wrote: > > >I don't have any image in my document. > > > > Then I don't understand your original question, since text & > > vector data in a PDF is resolution INDEPENDANT! > > > > >In the library user guide, it is said that to obtain the > document size in > > >points, you have to calculate the dimension in cm /2.54 *72, so my > > >resolution is 72 dpi. > > > > No, it's not. That's misleading... > > > > It's 72 USER UNITS per inch. A User Unit, in PDF-speak, is > > simply a way to handle that resolution independent functionality into a > > graphics model that is easily understandable. > > > > If you simply THINK that everything is 72dpi when laying out > > elements on the page, then Acrobat will "do the right thing" to > render the > > data at whatever the output resolution is. > > > > > > Leonard > > > > > ------------------------------------------------------------------ > --------- > > Leonard Rosenthol > <mailto:[EMAIL PROTECTED]> > > Chief Technical Officer <http://www.pdfsages.com> > > PDF Sages, Inc. 215-938-7080 (voice) > > 215-938-0880 (fax) > > -- > Franck JACOB > Développeur Projet OpenSI > - > Société SpeedInfo > 12, rue de la Tuilerie > 38170 Seyssinet-Pariset > Tel: 04 76 21 15 85 > - > http://www.speedinfo.fr > http://www.opensi.org > > > > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by Yahoo. > Introducing Yahoo! Search Developer Network - Create apps using Yahoo! > Search APIs Find out how you can build Yahoo! directly into your own > Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005 > _______________________________________________ > iText-questions mailing list > iText-questions@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/itext-questions ------------------------------------------------------- This SF.Net email is sponsored by Yahoo. Introducing Yahoo! Search Developer Network - Create apps using Yahoo! Search APIs Find out how you can build Yahoo! directly into your own Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005 _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions
