Options Hash
options[:drawer_class] = :rasem (default) or :rmagick
Default ranges:
options[:x_min]
options[:x_max]
options[:y_min]
options[:y_max]
Ranges calculation mode:
options[:xy_behaviour] = :default - ranges can be enlarged
options[:xy_behaviour] = :fixed - fixed ranges
Axis can be calculated using fixed interval or fixed count per graph.
options[:x_axis_fixed_interval] = true
options[:y_axis_fixed_interval] = true
If fixed interval is set you should specify interval:
options[:y_axis_interval] = 1.0
options[:x_axis_interval] = 1.0
...else, count of axis:
options[:y_axis_count] = 10
options[:x_axis_count] = 10
Axis labels:
options[:x_axis_label] = 'x'
options[:y_axis_label] = 'y'
Adjust axis to be on 'zero':
options[:adjust_axis_to_zero] = true
Labels has truncate string to define precision. Default it is "%.2f".
options[:truncate_string] = "%.2f"
Draw axis labels, and labels for zero axis
options[:axis_value_and_param_labels] = true
options[:axis_zero_labels] = true
Graph image size:
options[:width]
options[:height]
Colors:
Possible #RRGGBB or color names (ex. 'white').
options[:background_color] - background color of image
options[:background_hatch_color] - background hatch color, used only in rmagick renderer
options[:axis_color] - color of axis, default #000000
Anti-aliasing:
options[:antialias] - draw axis using antialias
Font size:
options[:layers_font_size] - size of font used for values in graph
options[:axis_font_size] - size of font used in axis
options[:legend_font_size] - size of font used in legend
options[:axis_label_font_size] - size of font used in options[:x_axis_label] and options[:y_axis_label]
Sometime because of axis options and large amount of data, axis can be put densely on graph. Turning this option graph size will be enlarged to maintain set distanced between axis.
options[:axis_density_enlarge_image] - turn this options on
options[:x_axis_min_distance] - minimum distance between X axis, default 30 pixels
options[:y_axis_min_distance] - minimum distance between X axis, default 50 pixels
Legend options:
options[:legend] - do you want to draw legend?, default false
options[:legend_auto] - let legend position to be chosen by algorithm, default true
options[:legend_width] - width used for setting proper distance while drawing on right, default 100, legend height is calculated
options[:legend_margin] - graph margin used not to draw legend on border, default 50
options[:legend_x] - legend X position, used when options[:legend_auto] is false, default 50
options[:legend_y] - legend Y position, used when options[:legend_auto] is false, default 50
Layer options Hash
layer_options[:label] - label used in legend
layer_options[:color] - color of graph layer, ex.: 'red', 'green', '#FFFF00'
layer_options[:antialias] - use anti-aliasing for this, default false, override options[:layers_antialias]
layer_options[:value_labels] - write values near 'dots', default true
layer_options[:simple_smoother] - 'smooth' data, default false
layer_options[:simple_smoother_level] - strength of smoothing, this is level of window used for processing, default 3
layer_options[:simple_smoother_strategy] - strategy used for smoothing data, you can choose between :rectangular or :gauss, default :rectangular
layer_options[:simple_smoother_x] - consider X axis distance when smoothing, slowest but more accurate, default false
layer_options[:noise_removal] - enable removal of noises/peaks, default false
layer_options[:noise_removal_level] - tolerance level, higher - less points will be removes, default 3
layer_options[:noise_removal_window_size] - how many near values check for determining what is noise, default 10
layer_options[:perform_parameter_uniq] - it takes some time and rarely usable, so it is turned off by default