Example

Example Code

require_relative '../../lib/grruby'
x1 = [1, 2, 3, 4, 5]
y1 = [10, 20, 30, 40, 50]
x2 = [2, 4, 16]
y2 = [10, 20, -40]
values = [0, 24, -12, 48]
a = Rubyplot::Figure.new
a.subplot!(2, 2, 1)
a.line! x1, y1, marker_size: 1
a.scatter! x2, y2
a.subplot!(2, 2, 2)
a.bar! values, bar_color: :orange, bar_gap: 1
a.subplot!(2, 1, 2)
a.clear!
a.scatter! x2, y2
a.view
a.clear_figure!
a.line! x1, y1, line_color: :red, line_type: :dashed
a.view

Code is present in : GRRruby-extension/examples/Wiki_example.rb

Explanation

require_relative '../../lib/grruby' #Including the library

#Defining the data
x1 = [1, 2, 3, 4, 5] 
y1 = [10, 20, 30, 40, 50]
x2 = [2, 4, 16]
y2 = [10, 20, -40]
values = [0, 24, -12, 48]

a = Rubyplot::Figure.new # Initializing new Figure Object a

a.subplot!(2, 2, 1) # Initializing a new subplot, the figure is divided into 2 rows and 2 columns and index 1 is chosen as the active subplot and this active subplot is pushed to the subplot list

a.line! x1, y1, marker_size: 1 # Tasks for line plot is pushed into the task list of subplot(2,2,1)

a.scatter! x2, y2  # Tasks for scatter plot is pushed into the task list of subplot(2,2,1)

a.subplot!(2, 2, 2) # Initializing a new subplot, the figure is divided into 2 rows and 2 columns and index 2 is chosen as the active subplot and this active subplot is pushed to the subplot list

a.bar! values, bar_color: :orange, bar_gap: 1 # Tasks for bar plot are instantiated and directly called because it is inherited from Lazy base i.e. it is a lazy plot

a.subplot!(2, 1, 2) # Initializing a new subplot, the figure is divided into 2 rows and 1 column and index 2 is chosen as the active subplot and this active subplot is pushed to the subplot list

a.clear! # calls the clear function of the subplot(2,1,2) object and clears the task list of the object
# Here, since the subplot object is initialized just before clear, it has no effect as the task list is empty

a.scatter! x2, y2 # Tasks for scatter plot is pushed into the task list of subplot(2,1,2)

a.view # view function of plotspace is called, the state of figure is copied to the plotsapce object and it starts calling tasks from the task list of every subplot from subplot list. After calling all tasks it views the figure

a.clear_figure! # Figure is cleared

a.line! x1, y1, line_color: :red, line_type: :dashed # Since, now the figure has no subplots defined, this plot is treated as a subplot with identity(1,1,1) which is default when no subplots are defined. This subplot is pushed into the subplot list and the tasks of line plot are pushed into the task list.

a.view # view function of plotspace is called, the state of figure is copied to the plotsapce object and it starts calling tasks from the task list of every subplot from subplot list. After calling all tasks it views the figure