diff options
Diffstat (limited to 'pstopnm.html')
| -rw-r--r-- | pstopnm.html | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/pstopnm.html b/pstopnm.html index 8d1c4f70..c722c46c 100644 --- a/pstopnm.html +++ b/pstopnm.html @@ -27,7 +27,6 @@ pstopnm - convert a PostScript file to a PNM image [<B>-xborder=</B><I>frac</I>] [<B>-yborder=</B><I>frac</I>] -5~ [<B>-landscape</B>] [<B>-portrait</B>] @@ -94,15 +93,15 @@ output files, so may not be entirely consistent with most Netpbm programs. <P><I>psfile</I>[<B>.ps</B>] is the name of the input file. -<B>pstopnm</B> will add the <B>ps</B> to the end of the name you -specify if no file exists by the exact name you specify, but one with -added does. Use <B>-</B> to indicate Standard Input. - -<P>If you use the <B>-stdout </B> option, <B>pstopnm</B> outputs -images of all the pages as a multi-image file to Standard Output. -Otherwise, <B>pstopnm</B> creates one file for each page in the -Postscript document. The files are named as follows: If the input -file is named <B>psfile.ps</B>, the name of the files will be +<B>pstopnm</B> will add the <B>ps</B> to the end of the name you specify if no +file exists by the exact name you specify, but one with added does. +For Standard Input, use <B>-</B> or just don't give any argument. + +<P>If you use the <B>-stdout </B> option or your input is from Standard +Input, <B>pstopnm</B> outputs images of all the pages as a multi-image file to +Standard Output. Otherwise, <B>pstopnm</B> creates one file for each page in +the Postscript input. The files are named as follows: If the input file is +named <B>psfile.ps</B>, the name of the files will be <B>psfile001.ppm</B>, <B>psfile002.ppm</B>, etc. The filetype suffix is <B>.ppm</B>, <B>.pgm</B>, or <B>.pbm</B>, depending on which kind of output you choose with your invocation options. If the input file @@ -116,6 +115,21 @@ Netpbm programs, because it does not default to Standard Output. This is for historical reasons, based on the fact that the Netpbm formats did not always provide for a sequence of images in a single file. +<p>When your input is from Standard Input, you may feed multiple Encapsulated +Postscript documents, one after another, and <b>pstopnm</b> converts every +document and places it in the Standard Output stream as an image. But if your +input is from a named file, <b>pstopnm</b> expects the file to be an +Encapsulated Postscript file, which means it contains only one Enapsulated +Postscript document. If the file contains multiple concatenated +documents, <b>pstopnm</b> ignores every document but the first. This +distinction does not exist for non-EPSF Postscript input +— <b>pstopnm</b> generates an output image for each page of the input +regardless of whether the input is from Standard Input or from a named file. + +<p>Note that you can generated both kinds of files — concatenated EPSF +and multi-page non-EPSF — with <b>pnmtops</b>, selecting with the +<b>-setpage</b> option. + <p>Each output image contains a rectangular area of the page to which it pertains. See <a href="#dimensions">the Dimensions section</a> for details on what part of the input image goes into the output image and |