psmultipage rows columns file1 file2 ..\. >outfile
This conversion is particularly effective if the \*(Ps pages are simple line graphics, or overhead slides in large font sizes.
If no files are specified on the command line, then standard input is assumed to contain the \*(Ps stream.
If the rows and columns arguments are omitted, then a 2 by 2 grid is assumed.
In the current version, pages are arranged vertically on the grid; that is, pages are imaged in cells down the first column before moving to the second column.
The output page is divided into equal cells according to the specified number of rows and columns. In general, the aspect ratio of these cells will be different from that of the original page, unless the numbers of rows and columns are identical. Thus, some stretching or shrinking of the page images is expected.
Because the output page images are reduced in size, some distortion in quality is expected on typical 300dpi \*(Ps laser printers. This will particularly be true if the output contains bitmap images, or bitmapped fonts downloaded by a TeX DVI driver, and the quality will be worse when the aspect ratio is not preserved.
Most laser printers have rather limited memory, and the multiple page images may exceed printer capacity. Experiments with a 200KB 16-page \*(Ps test file from SLiTeX on a 1MB Apple Laserwriter II showed that 2 by 2 printing was successful only for one page. On a 6MB Imagen 3320 printer, all sizes up to 4 by 4 printed without problems.
Finally, laser printers process the output \*(Ps rather slowly; expect the printing time to be about the same as for separate page images.
One possible cause is the use of any of these operators, which can change the image transformation:
banddevice grestoreall nulldevice setpageparams copypage initclip quit setsccbatch erasepage initgraphics renderbands setscreen exitserver initmatrix setdevice settransfer framedevice note setmatrix
A second cause is the issuing of showpage between save and restore commands; the restore invalidates the work done by psmultipage's modified showpage. The showpage command should follow any restore.
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University of Utah
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