On Sat, 2007-08-25 at 22:13 +0100, Andy Green wrote: > Somebody in the thread at some point said: > > > Ok., I finally was pressed to resolve my confusion. The question was to > > convert a pdf file t0 pnm. pstopnm converts ps files to pnm. What am I > > missing? > > pdf2ps > > -Andy > I may be drunk but if you look at your posts and your advice about dvi nowhere did you suggest using pdf2ps before using pstopnm. If I missed them I am sorry for the interruption. Look at the dialog I include below: On Sat, 2007-08-25 at 16:49 +0100, Paul Smith wrote: > On 8/25/07, Andy Green <andy@xxxxxxxxxxx> wrote: > > >>> Is there any way of converting a bunch of pdf files to pnm without > > >>> loosing resolution? > > >> What happens when you use the -dpi= option on pstopnm? > > > > > > OK, Andy, but how can one find out the dpi's of our pdf file? > > > > Well the pdf is not normally already rasterized in the case of text, so > > for that there is no "dpi of our pdf file". It will render the text > > nicely according to the dpi you asked for. > > > > If there are raster images (at various dpi) in the pdf then it will > > scale them to the dpi you asked for AIUI. So I guess you should pick a > > dpi that is close to the highest image dpi in the pdfs (eg, 300) and run > > with it. > > Thanks, Andy. In fact, the pdf file that I have got contains a scanned > document. Is there some way of determining the dpi used in the > scanning work? > > Paul -- ======================================================================= Everyone can be taught to sculpt: Michelangelo would have had to be taught how ___not to. So it is with the great programmers. ======================================================================= Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@xxxxxxxxxxxxx
