require 'rvg/rvg'
Magick::RVG.dpi = 90
rvg = Magick::RVG.new(10.cm, 3.cm).viewbox(0,0,1000,300) do |canvas|
canvas.background_fill = 'white'
canvas.desc = "Example text01 - 'Hello, out there' in blue"
canvas.text(250, 150, "Hello, out there").
styles(:font_family=>'Verdana', :font_size=>55, :fill=>'blue', :font_weight=>'normal', :font_style=>'normal')
canvas.circle(5, 250, 150).styles(:fill=>'red')
# Show outline of canvas using 'rect' element
canvas.rect(997, 297).styles(:fill=>'none', :stroke=>'blue')
end
rvg.draw.write('text01.gif')