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size reduction and dpi |
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rweetch 
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Joined: 22 Feb 11 Status: Offline Points: 173 |
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 Topic: size reduction and dpiPosted: 11 Feb 12 at 12:34AM |
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My client wants me to create images of a pdf at A4 size at 72dpi. The actual size of the pdf is A1 - any ideas about the best way to go about this?
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edvoigt
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Joined: 26 Mar 11 Location: Berlin, Germany Status: Offline Points: 111 |
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Posted: 11 Feb 12 at 6:02PM |
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Hi,
you have to do a small calculation before rendering. I do it only for width, assuming the format ist in source and target exactly DIN. A1 is 594mm, A4 210 in the width. That means the size should go down by 210/594. So we use this for SetRenderscale(210/594). I like this function! After this a rendering with 72dpi should give an image with the right format (A4 at 72dpi). This is: 210*72/25.4=595 pixels. Resulting image should became 595x842 Cheers, Werner |
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rweetch
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Joined: 22 Feb 11 Status: Offline Points: 173 |
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Posted: 14 Feb 12 at 3:13PM |
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thanks Werner. I'd missed this function! definatelt what we need!
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