def generate_coordinates(options = {})
key_layer = points.find { |layer| layer.relevant_data? }
options[:point_distance] = width / (key_layer.points.size - 1).to_f
coords = []
key_layer.points.each_with_index do |layer, idx|
sum, objects = points.inject([0, 0]) do |arr, elem|
if elem.relevant_data?
arr[0] += elem.points[idx]
arr[1] += 1
end
arr
end
average = sum / objects.to_f
x_coord = options[:point_distance] * idx
relative_percent = ((average == min_value) ? 0 : ((average - min_value) / (max_value - min_value).to_f))
y_coord = (height - (height * relative_percent))
coords << [x_coord, y_coord].join(',')
end
return coords
end