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Quick Reference

functions in graph.i - l


             legend=   plotting keyword  
     sets the legend for a plot.  The default legend is a concatentation  
     of the strings used in the original plotting command (plg, plm, etc.),  
     except for the plt command, which has no default legend.  
     Legends are never plotted to the X window; use the plq command to  
     see them interactively.  Legends will appear in hardcopy output  
     unless they have been explicitly turned off.  
   PLOTTING COMMANDS: plg, plm, plc, plv, plf, pli, plt, pldj  
keyword,  defined at i0/graph.i   line 864  
SEE ALSO: hide  

          or limits, xmin, xmax, ymin, ymax,  
                     square=0/1, nice=0/1, restrict=0/1  
          or old_limits= limits()  
          or limits, old_limits  
     In the first form, restores all four plot limits to extreme values.  
     In the second form, sets the plot limits in the current coordinate  
     system to XMIN, XMAX, YMIN, YMAX, which may be nil or omitted to  
     leave the corresponding limit unchanged, a number to fix the  
     corresponding limit to a specified value, or the string "e" to  
     make the corresponding limit take on the extreme value of the  
     currently displayed data.  
     If present, the square keyword determines whether limits marked  
     as extreme values will be adjusted to force the x and y scales  
     to be equal (square=1) or not (square=0, the default).  
     If present, the nice keyword determines whether limits will be  
     adjusted to nice values (nice=1) or not (nice=0, the default).  
     There is a subtlety in the meaning of "extreme value" when one  
     or both of the limits on the OPPOSITE axis have fixed values --  
     does the "extreme value" of the data include points which  
     will not be plotted because their other coordinate lies outside  
     the fixed limit on the opposite axis (restrict=0, the default),  
     or not (restrict=1)?  
     If called as a function, limits returns an array of 5 doubles;  
     OLD_LIMITS(1:4) are the current xmin, xmax, ymin, and ymax,  
     and int(OLD_LIMITS(5)) is a set of flags indicating extreme  
     values and the square, nice, restrict, and log flags.  
     In the fourth form, OLD_LIMITS is as returned by a previous  
     limits call, to restore the limits to a previous state.  
     In an X window, the limits may also be adjusted interactively  
     with the mouse.  Drag left to zoom in and pan (click left to zoom  
     in on a point without moving it), drag middle to pan, and click  
     (and drag) right to zoom out (and pan).  If you click just above  
     or below the plot, these operations will be restricted to the  
     x-axis; if you click just to the left or right, the operations  
     are restricted to the y-axis.  A shift-left click, drag, and  
     release will expand the box you dragged over to fill the plot  
     (other popular software zooms with this paradigm).  If the  
     rubber band box is not visible with shift-left zooming, try  
     shift-middle or shift-right for alternate XOR masks.  Such  
     mouse-set limits are equivalent to a limits command specifying  
     all four limits EXCEPT that the unzoom command can revert to  
     the limits before a series of mouse zooms and pans.  
     The limits you set using the limits or range functions carry over  
     to the next plot -- that is, an fma operation does NOT reset the  
     limits to extreme values.  
builtin function, documented at i0/graph.i   line 715  
SEE ALSO: plsys,   range,   logxy,   zoom_factor,   unzoom,  
plg,   viewport  

             logxy, xflag, yflag  
     sets the linear/log axis scaling flags for the current coordinate  
     system.  XFLAG and YFLAG may be nil or omitted to leave the  
     corresponding axis scaling unchanged, 0 to select linear scaling,  
     or 1 to select log scaling.  
builtin function, documented at i0/graph.i   line 785  
SEE ALSO: plsys,   limits,   range,   plg,   gridxy