open flash chart rails x-axis issue
- by Jimmy
Hey guys,
I am using open flash chart 2 in my rails application. Everything is looking smooth except for the range on my x axis. I am creating a line to represent cell phone plan cost over a specific amount of usage and I'm generate 8 values, 1-5 are below the allowed usage while 6-8 are demonstrations of the cost for usage over the limit.
The problem I'm encountering is how to set the range of the X axis in ruby on rails to something specific to the data. Right now the values being displayed are the indexes of the array that I'm giving. When I try to hand a hash to the values the chart doesn't even load at all.
So basically I need help getting a way to set the data for my line properly so that it displays correctly, right now it is treating every value as if it represents the x value of the index of the array.
Here is a screen shot which may be a better description than what I am saying: http://i163.photobucket.com/albums/t286/Xeno56/Screenshot.png Note that those values are correct just the range on the x-axis is incorrect, it should be something like 100, 200, 300, 400, 500, 600, 700
Code:
y = YAxis.new
y.set_range(0,100, 20)
x_legend = XLegend.new("Usage")
x_legend.set_style('{font-size: 20px; color: #778877}')
y_legend = YLegend.new("Cost")
y_legend.set_style('{font-size: 20px; color: #770077}')
chart =OpenFlashChart.new
chart.set_x_legend(x_legend)
chart.set_y_legend(y_legend)
chart.y_axis = y
line = Line.new
line.text = plan.name
line.width = 2
line.color = '#006633'
line.dot_size = 2
line.values = generate_data(plan)
chart.add_element(line)
def generate_data(plan)
values = []
#generate below threshold numbers
5.times do |x|
usage = plan.usage / 5 * x
cost = plan.cost * 10
values << cost
end
#generate above threshold numbers
3.times do |x|
usage = plan.usage + ((plan.usage / 5) * x)
cost = plan.cost + (usage * plan.overage)
values << cost
end
return values
end
