section r of routines in graph.i

functions in graph.i - r

range


    range, ymin, ymax  


sets the y-axis plot limits in the current coordinate system to  
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.  
Use    limits, xmin, xmin  
to accomplish the same function for the x-axis plot limits.  
Interpreted function, defined at i0/graph.i   line 836

SEE ALSO: plsys, limits, logxy, plg

raw_style


    raw_style: get_style, set_style, read_style, write_style  
    #include "style.i"  


alternatives to the style= keyword of the window command which  
allow the interpreter to set or get all the details of the  
window style.  Include "style.i" and read the help for get_style.  
Builtin function, documented at i0/graph.i   line 1515

rays


    rays=   plotting keyword  


  selects unadorned lines (rays=0), or lines with occasional ray  
  arrows (rays=1).  Ignored if type is "none".  The spacing and phase  
  of the occasional arrows can be altered using the rspace and rphase  
  keywords; the shape of the arrowhead can be modified using the  
  arroww and arrowl keywords.  
PLOTTING COMMANDS: plg, plc  
  Keyword,  defined at i0/graph.i   line 1042

SEE ALSO: type, width, color, marker, marks, rspace, rphase, arroww, arrowl

redraw


    redraw  


redraws the X window associated with the current graphics window.  
Builtin function, documented at i0/graph.i   line 334

SEE ALSO: window, fma, hcp, plg

region


    region=   plotting keyword  


  selects the part of mesh to consider.  The region should match one  
  of the numbers in the IREG array.  Putting region=0 (the default)  
  means to plot the entire mesh, that is, everything EXCEPT region  
  zero (non-existent zones).  Any other number means to plot only  
  the specified region number; region=3 would plot region 3 only.  
PLOTTING COMMANDS: plm, plc, plv, plf  
  Keyword,  defined at i0/graph.i   line 1139

rgb_read


    rgb = rgb_read()  
 or rgb = rgb_read(n)  


Read contents of current graphics window, or of graphics window N.  
RGB is a 3xNXxNY array of char where NXxNY is the current shape of  
the window in pixels.  RGB(1,,) is the red component, RGB(2,,) is  
the green component, and RGB(3,,) is the blue component, with 0  
black and 255 full intensity.  RGB(,,1) is the top row of the  
window, RGB(,,2) the second row, and so on to RGB(,,0), which is  
the bottom row.  (So RGB(,,::-1) to pli redraws a copy.)  
Builtin function, documented at i0/graph.i   line 1452

rphase


    rphase  


Keyword,  defined at i0/graph.i   line 1054

SEE rspace

rspace


    rspace=   plotting keyword  
 or rphase=   plotting keyword  
 or arroww=   plotting keyword  
 or arrowl=   plotting keyword  


  selects the spacing, phase, and size of occasional ray arrows  
  placed along polylines.  The spacing and phase are in NDC units  
  (0.0013 NDC equals 1.0 point); the default rspace is 0.13, and  
  the default rphase is 0.11375, but rphase is automatically  
  incremented for successive curves on a single plot.  
  The arrowhead width, arroww, and arrowhead length, arrowl are  
  in relative units, defaulting to 1.0, which translates to an  
  arrowhead 10 points long and 4 points in half-width.  
PLOTTING COMMANDS: plg  
  Keyword,  defined at i0/graph.i   line 1054

SEE ALSO: type, width, color, marks, marker, rays