def draw_data
minvalue = min_value
fieldheight = field_height
unit_size = (@graph_width.to_f - font_size*2*right_font ) /
(get_x_labels.max - get_x_labels.min )
bargap = bar_gap ? (fieldheight < 10 ? fieldheight / 2 : 10) : 0
bar_height = fieldheight - bargap
bar_height /= @data.length if stack == :side
y_mod = (bar_height / 2) + (font_size / 2)
field_count = 1
@config[:fields].each_index { |i|
dataset_count = 0
for dataset in @data
value = dataset[:data][i]
top = @graph_height - (fieldheight * field_count)
top += (bar_height * dataset_count) if stack == :side
length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size
left = (minvalue.abs + (value < 0 ? value : 0)) * unit_size
@graph.add_element( "rect", {
"x" => left.to_s,
"y" => top.to_s,
"width" => length.to_s,
"height" => bar_height.to_s,
"class" => "fill#{dataset_count+1}"
})
make_datapoint_text(
left+length+5, top+y_mod, value, "text-anchor: start; "
)
dataset_count += 1
end
field_count += 1
}
end