Class | Gnuplot::Plot |
In: |
lib/gnuplot.rb
|
Parent: | Object |
Holds command information and performs the formatting of that command information to a Gnuplot process. When constructing a new plot for gnuplot, this is the first object that must be instantiated. On this object set the various properties and add data sets.
QUOTED | = | [ "title", "output", "xlabel", "ylabel" ] |
cmd | [RW] | |
data | [RW] | |
sets | [RW] |
# File lib/gnuplot.rb, line 73 73: def initialize (io = nil, cmd = "plot") 74: @cmd = cmd 75: @sets = [] 76: @data = [] 77: yield self if block_given? 78: 79: io << to_gplot if io 80: end
Return the current value of the variable. This will return the setting that is currently in the instance, not one that’s been given to a gnuplot process.
# File lib/gnuplot.rb, line 108 108: def [] ( var ) 109: v = @sets.assoc( var ) 110: v[1] || nil 111: end
Invoke the set method on the plot using the name of the invoked method as the set variable and any arguments that have been passed as the value. See the set method for more details.
# File lib/gnuplot.rb, line 86 86: def method_missing( methId, *args ) 87: set methId.id2name, *args 88: end
Set a variable to the given value. Var must be a gnuplot variable and value must be the value to set it to. Automatic quoting will be performed if the variable requires it.
This is overloaded by the method_missing method so see that for more readable code.
# File lib/gnuplot.rb, line 98 98: def set ( var, value = "" ) 99: value = "'#{value}'" if QUOTED.include? var unless value =~ /^'.*'$/ 100: @sets << [ var, value ] 101: end
# File lib/gnuplot.rb, line 119 119: def to_gplot (io = "") 120: @sets.each { |var, val| io << "set #{var} #{val}\n" } 121: 122: if @data.size > 0 then 123: io << @cmd << " " << @data.collect { |e| e.plot_args }.join(", ") 124: io << "\n" 125: 126: v = @data.collect { |ds| ds.to_gplot } 127: io << v.compact.join("e\n") 128: end 129: 130: io 131: end