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- The file "millim.ps" contains PostScript procedures that draw
- millimetered paper with logarithmic or linear scales both on x and y;
- the user should write a PostScript program that calls these routines.
-
- To do this, save millim.ps and edit a copy of that same file; go
- to the end, and replace all the instructions between the lines saying
- "%%Page 1 1" and "%%Trailer". Be careful: THE CASE IS SIGNIFICANT in
- PostScript!
-
- - The first line must be "init".
- - The default paper size is A4; if you are using Letter sized paper,
- insert here a single line saying "letter"; if you are using custom
- paper, insert here two lines defining the paper size, like the
- following examples (obey to the case and the spacing! You can use
- as units inches, centimeters or millimeters simply typing "in" or
- "cm" or "mm"; if no unit is given the default is a "point", i.e.
- 1/72th of an inch):
-
- /xsheet 8.5 in def
- /ysheet 297 mm def
- /xsheet 612 def
-
- ("xsheet" and "ysheet" are the variable names holding the paper
- size; these statements store into them the correct values).
- - The default page orientation is portrait; if you need landscape
- orientation, insert here a single line saying "landscape".
- - Then insert (optional) lines to modify the default values of every
- constant that do not satisfy you needs; these constants with their
- default values are:
-
- /margin 2 cm def
- /fontsize 10 def
- /bordersize 1 def
- /linesize 0.4 def
- /smallsize 0.01 def
- /bordergray 0 def
- /linegray 0 def
- /smallgray 0 def
-
- and their meaning is the following:
- . "margin": the drawing is done in a rectangular region at "margin"
- from the paper borders. be sure that the axis labels can fit in
- "margin" (these labels are ALWAYS printed).
- . "fontsize" is the height (in points) of the font (Times-Roman) used
- to print the axis labels.
- . "bordersize", "linesize" and "smallsize" are the width in points of
- the lines used to draw the frame borders, the normal divisions and
- the small subdivisions (see later for the definitions of the last
- two).
- . "bordergray", "linegray" and "smallgray" are the gray levels of
- these same lines: they must be values from 0 to 1 inclusive, 0
- meaning black and 1 meaning white (i.e. not drawn). Be careful: on
- some printers "gray" lines are rendered as dotted lines; or, "gray"
- and very thin lines could or could not be drawn according to their
- position on the page.
- - Then, define two arrays "xscale" and "yscale" in the following way:
-
- /xscale [-2 2] def OR
- /xscale [0 1 10] def OR
- /xscale [0 2 10 4] def
-
- (the difference between these three variants is the number of
- arguments inside the square brackets; the same works for yscale).
- . With two arguments, the x/y scale is logarithmic; and the argument
- themselves are the powers of ten of the beginning and the end of
- that scale: [-2 2] means from 10^-2 to 10^2.
- . With three arguments, the scale is linear; the first and last
- arguments are the minimum and maximum value, and the middle one is
- the width of the axis intervals where a label and a "normal
- division" line will be inserted: [0 1 10] means from 0 to 10 with
- labels and divisions every unit.
- . With four arguments, the scale is still linear; the meaning of the
- first 3 arguments remains the same, and the fourth one is the number
- of sub-intervals in every "normal division": for every one of these
- sub-interval, a line is drawn but no label is printed. [0 2 10 4]
- means: lower value 0, higher value 10, label and normal line every
- 2 units, and each one of these "normal intervals" further divided in
- 4 intervals.
- - Then, insert a statement saying "drawsheet", to perform the drawing.
- - Then, insert a statement saying "showpage", to print the drawing;
- optionally, if you are proficient in PostScript, you can overimpose
- graphs on the drawing before the "showpage" command.
- - Print the file on a PostScript printer.
-
- -----
-
- Enjoy!
-
- The file millim.ps with its content is public domain, and can be
- spread and modified as you want.
-
- Comments and modifications are gladly accepted via EMail to
- loreti@padova.infn.it
-
- MLO
-
- Maurizio Loreti (MLO) - Ham: I3NOO
- Work: University of Padova, Department of Physics
- Via F. Marzolo, 8 - 35131 Padova - Italy
- DECnet: VAXFPD::LORETI, i.e. 39330::LORETI
- BITNET: LORETI@IPDINFN
- INTERNET: LORETI@PADOVA.INFN.IT
-