Rongo Command Reference¶ ↑

Jun Makino 2004/01/05

Alphabetical list of all implemented commands¶ ↑

• angle d - sets angle of text or points to d degrees

• box (xopt yopt) - makes a box labelled according to arguments

  Box behaves quite differently than in original mongo.

  Options (for parameters XOPT and YOPT):
  A : draw Axis (X axis is horizontal line Y=0, Y axis is vertical
      line X=0).
  B : draw bottom (X) or left (Y) edge of frame.
  C : draw top (X) or right (Y) edge of frame.
  G : draw Grid of vertical (X) or horizontal (Y) lines.
  I : Invert the tick marks; ie draw them outside the viewport
      instead of inside.
  L : label axis Logarithmically (see below).
  N : write Numeric labels in the conventional location below the
      viewport (X) or to the left of the viewport (Y).
  P : extend ("Project") major tick marks outside the box (ignored if
      option I is specified).
  M : write numeric labels in the unconventional location above the
      viewport (X) or to the right of the viewport (Y).
  T : draw major Tick marks at the major coordinate interval.
  S : draw minor tick marks (Subticks).
  V : orient numeric labels Vertically. This is only applicable to Y.
      The default is to write Y-labels parallel to the axis.
  1 : force decimal labelling, instead of automatic choice (see PGNUMB).
  2 : force exponential labelling, instead of automatic.

  Some example of reasonable arguments are:

  BCNTSV BCNTSV (this is default) This creates a box with ticks
  in all sides, and numeric labels at left and bottom
  
  BCNTSVL BCNTSVL This creaets logarithmic ticks (and labels) for
  both horizontal and vertical axes.

• connect - connects (x,y) pairs read by x and ycolumn with line segments

• data fspec - opens the file “fspec” for reading data

• dot - makes a point of the current style at the current location

• draw x y - draws a line to (x,y) from the last coordinate

• erase - erases the graphics screen or initializes a printer plot

• expand e - expands all characters or points by a factor e

• fcolumn [x/y] expression - reads x or y data from current data file.

  This is an extension of the standard xcolumn or ycolumn command. Instead of reading from a fixed column, this command reads the entire line and evaluate the expression specified in the second argument. The data in columns are specified as “cx”, where x is a number. For example,

  fcolumn x c1*c1
  

  sets the square of the first column to x data. Any valid expression of Ruby can be used here. This command tries to convert all columns to numbers, unless there is a column starting with “#”. All data after “#” will be ignored.

• justification

  used as replacement for “putlabel x”. You can say

  justfication center    
  justfication left
  justfication right
  

  which will affect the justification of the subsequent texts printed by label command.

• limits (x1 x2 y1 y2) - sets the limits of the plot (no args for auto)

• ltype n - sets the line type to n

• lweight n - sets the line weight to n

• points - draws points of the current style at the (x,y) of x and ycolumn

• psfix (filename) - add the correct boundingbox at the beginning of the file, instead of the end.

• printer devicename - directs output to a hardcopy printer.

  If no argument is given, “pgplot.ps/vcps” is assumed

• ptype n s - sets the point type to an n-gon of style s

  PTYPE n s causes points to be drawn as n sided polygons of a style
  s, where s refers to:
                  0 = open
                  1 = skeletal (center connected to vertices)
                  2 = starred
                  3 = solid
  PTYPE will also accept one argument which is a composite = 10*n + s.

• quit

  In mongo, you can use “end”, but since “end” is a reserved word in Ruby we need to use something else.

• relocate x y - sets the current coordinates to (x,y)

• squareview - force a squre viewport

  This command is useful to make a square plot (which I like)

• terminal devicename - directs output to a graphics terminal

  The argument is the same as that for PGOPEN. If no argument is given, “/xserve” is assumed

• viewport x0 x1 y0 y1

  change viewport, relative to the current viewport

• writeb filename

  write the command history to file filename (works only in the interactive mode)

• xcolumn n - reads x data from column n of the current file

• ycolumn n - reads y data from column n of the current file

• xdata array - set xdata from Ruby array array

• ydata array - set ydata from Ruby array array

• xlabel … - writes the label … centered under the x axis

• xlogarithm - takes the logarithm of x values from XCOLUMN

• ylabel … - writes the label … centered left of the y axis

• ylogarithm - takes the logarithm of y values from YCOLUMN