[texhax] \scalebox and resolution

Hartmut Henkel hartmut_henkel at gmx.de
Sat Aug 26 17:29:50 CEST 2006

On Sat, 26 Aug 2006, David C. Walden wrote:

> Suppose I have a bit-mapped image that has a resolution of 300 dpi
> and is 1200 pixels by 900 pixels -- 4 inches by 3 inches.  Suppose
> I include this image as a LaTeX figure using
>     \scalebox{.5}{\includegraphics{filename}}
> Does this result in a figure that has the same number of pixels in
> half the inches such that in effect

yes, there has only been added some transformation matrix, but the image
itself is untouched.

> The final PostScript file including this image will go to a book
> printing company company.

If the real resolution matters, you will have to scale the pictures down
by an external tool like convert, without any scaling in the .tex

Regards, Hartmut

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