require("chartdirector")
class Markzone2Controller < ApplicationController
def index()
@title = "Marks and Zones (2)"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# The data for the chart
data = [50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59,
73, 77, 84, 82, 80, 84, 89]
# The labels for the chart. Note the "-" means a minor tick.
labels = ["0\nJun 4", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11",
"12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
"0\nJun 5"]
# Create a XYChart object of size 400 x 270 pixels
c = ChartDirector::XYChart.new(400, 270)
# Set the plotarea at (80, 25) and of size 300 x 200 pixels. Use alternate color
# background (0xeeeeee) and (0xffffff). Set border and grid colors to grey
# (0xc0c0c0).
c.setPlotArea(50, 25, 300, 200, 0xeeeeee, 0xffffff, 0xc0c0c0, 0xc0c0c0, 0xc0c0c0)
# Add a title to the chart using 14 pts Times Bold Italic font
c.addTitle("Server Monitor", "timesbi.ttf", 14)
# Add a title to the y axis
c.yAxis().setTitle("Server Load (MBytes)")
# Set the y axis width to 2 pixels
c.yAxis().setWidth(2)
# Set the labels on the x axis.
c.xAxis().setLabels(labels)
# Display 1 out of 3 labels on the x-axis. Show minor ticks for remaining labels.
c.xAxis().setLabelStep(3, 1)
# Set the x axis width to 2 pixels
c.xAxis().setWidth(2)
# Add a horizontal red (0x800080) mark line at y = 80
yMark = c.yAxis().addMark(80, 0xff0000, "Critical Threshold Set Point")
# Set the mark line width to 2 pixels
yMark.setLineWidth(2)
# Put the mark label at the top center of the mark line
yMark.setAlignment(ChartDirector::TopCenter)
# Add an orange (0xffcc66) zone from x = 18 to x = 20
c.xAxis().addZone(18, 20, 0xffcc66)
# Add a vertical brown (0x995500) mark line at x = 18
xMark1 = c.xAxis().addMark(18, 0x995500, "Backup Start")
# Set the mark line width to 2 pixels
xMark1.setLineWidth(2)
# Put the mark label at the left of the mark line
xMark1.setAlignment(ChartDirector::Left)
# Rotate the mark label by 90 degrees so it draws vertically
xMark1.setFontAngle(90)
# Add a vertical brown (0x995500) mark line at x = 20
xMark2 = c.xAxis().addMark(20, 0x995500, "Backup End")
# Set the mark line width to 2 pixels
xMark2.setLineWidth(2)
# Put the mark label at the right of the mark line
xMark2.setAlignment(ChartDirector::Right)
# Rotate the mark label by 90 degrees so it draws vertically
xMark2.setFontAngle(90)
# Add a green (0x00cc00) line layer with line width of 2 pixels
c.addLineLayer(data, 0x00cc00).setLineWidth(2)
# output the chart
send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png",
:disposition => "inline")
end
end |