NAME

       graph - compile graphs into pic input

SYNOPSIS

       graph [ options ] [ filename ...  ]

DESCRIPTION

       graph  is  a perl script which takes sets of X Y data and generates a (human readable) pic
       program that will produce the graphed data.  The output is designed such that you can save
       it  in  a file and tweak it to make it fit your document.  Try one and look at the output.
       The output is actually commented.

       The graph is autosized and auto ticked.

       The input data format is similar that of xgraph(1), i.e., 1 1 2 2 3 3 "sloped across

       1 4 2 4 3 4 "straight across

CONTROL OPTIONS

       You may set the graph title, the X title, and the  Y  title  with  the  following  control
       sequences in the data stream: %T Graph title in +4 point font %X X axis title and/or units
       in +2 point font %Y Y axis  title  and/or  units  in  +2  point  font  %fakemax-X  <value>
       force  graph  to  be that big %fakemax-Y <value>     force graph to be that big %fakemin-X
       <value>     force graph to be that small %fakemin-Y <value>     force  graph  to  be  that
       small

OPTIONS

       -rev        reverse  X/Y  data sense (and titles).  Note this is done after processing any
                   fudging of the input data stream(s) (see -xk, -yk, -logx, etc below).

       -below      put data set titles below the graph rather than to the right.

       -close      no extra space around the data's endpoints.

       -qline      connect the quartile center points.

       -grid       dotted line grid marks.

       -nobox      no box around whole graph.

       -big        make the graph take the whole page.

       -medium     make the graph take about 1/2 the page.

       -small      make the graph be small.

       -grapheach  draw each data set in its own graph.

       -nolabels   no X/Y/Title labels.

       -nodatal    no data set labels.

       -nomarks    do not mark each  data  point  with  distinct  markers  (endpoints  are  still
                   marked).

       -k          print values larger than 1000 as value/1000.

       -xk         multiply X input by 1024 (blech).

       -yk         multiply Y input by 1024 (blech).

       -xm         multiply X input by 1024*1024 (blech).

       -ym         multiply Y input by 1024*1024 (blech).

       -logx       convert X input into lag base 2 of X input.

       -logy       convert Y input into lag base 2 of Y input.

EXAMPLE

       Workstation  price  performance from a Digital ad.  Process with graph -rev workstations |
       groff -TX75

       "%T Workstation Price / Performance, 6/93 "%X SPECINT 92 Performance "%Y Price in  $1000's
       35 5 65 10 78 15 110 70 "Dec AXP line

       25 4 25 8 38 16 48 21 52 23 64 27 "Sun SPARC line

QUARTILE FORMAT

       Data  points  are  x  y1 y2 y3 y4 y5.   You get a two lines from the first two y values, a
       mark at the third, and another line from the last two.

SEE ALSO

       gtroff(1), gpic(1), perl(1).

BUGS

       This should probably be called pic_graph or something like that.

       This isn't done as much as I would like.  It isn't integrated with the groff  preprocessor
       yet.   It doesn't know about .GS/.GE things.  I use it to manually generate a pic file and
       then include that.

                                                                                         GRAPH(1)