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Contents
#Playing with background and stacked Bar Chart
require 'rubygems'
require 'rchart'
p = Rdata.new
p.add_point([9,9,9,10,10,11,12,14,16,17,18,18,19,19,18,15,12,10,9],"Serie1");
p.add_point([10,11,11,12,12,13,14,15,17,19,22,24,23,23,22,20,18,16,14],"Serie2");
p.add_point([4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22],"Serie3");
p.add_all_series()
p.remove_serie("Serie3")
p.set_abscise_label_serie("Serie3")
p.set_serie_name("January","Serie1");
p.set_serie_name("February","Serie2");
p.set_y_axis_name("Temperature");
p.set_y_axis_unit("°C");
p.set_x_axis_unit("h");
ch = Rchart.new(700,230)
ch.draw_graph_area_gradient(132,173,131,50,Rchart::TARGET_BACKGROUND);
ch.set_font_properties("tahoma.ttf",8)
ch.set_graph_area(120,20,675,190)
ch.draw_graph_area(213,217,221,false)
ch.draw_scale(p.get_data,p.get_data_description,Rchart::SCALE_ADDALL,213,217,221,true,0,2,true)
ch.draw_graph_area_gradient(163,203,167,50);
ch.draw_grid(4,true,230,230,230,20)
ch.draw_stacked_bar_graph(p.get_data,p.get_data_description,70)
#Draw the title
title= " Average Temperatures during\r\n the first months of 2008 "
ch.draw_text_box(0,0,50,230,"#{title}",90,255,255,255,Rchart::ALIGN_BOTTOM_CENTER,true,0,0,0,30)
#Draw the legend
ch.set_font_properties("tahoma.ttf",8)
ch.draw_legend(610,10,p.get_data_description,236,238,240,52,58,82)
ch.add_border(2)
ch.render_png("Example18")
Version data entries
12 entries across 12 versions & 1 rubygems