Graphics, Figures & Tables ⇒ viewport option for includegraphics

[neumannturing]

Hello,
some program like Matlab can output its generated figures to pdf format. But there is a huge blank space above and below the image in the pdf file. viewport seems to be a option to clip the part of the pdf. But viewport requires 4 parameters measure as pixel. How can I tell the upper left and bottom right of pdf where my image occupy ? Is there any good way to handle this problem?
Thanks

[localghost]

The graphicx manual gives some useful information about that. The keywords are the trim and viewport option for the \includegraphics command. Another possible solution is a Perl script called pdfcrop which cuts PDF files to size.


Best regards
Thorsten