require("chartdirector")
class ErrlineController < ApplicationController
def index()
@title = "Line with Error Symbols"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# The data with error information
data = [42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76, 63,
67, 75, 64, 51]
errData = [5, 6, 5.1, 6.5, 6.6, 8, 5.4, 5.1, 4.6, 5.0, 5.2, 6.0, 4.9, 5.6, 4.8, 6.2, 7.4,
7.1, 6.0, 6.6, 7.1, 5.3, 5.5, 7.9, 6.1]
# The labels for the chart
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
"15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]
# Create a XYChart object of size 600 x 300 pixels, with a light grey (eeeeee) background,
# black border, 1 pixel 3D border effect and rounded corners.
c = ChartDirector::XYChart.new(600, 300, 0xeeeeee, 0x000000, 1)
c.setRoundedFrame()
# Set directory for loading images to current script directory
c.setSearchPath(File.dirname(__FILE__))
# Set the plotarea at (55, 55) and of size 520 x 195 pixels, with white (ffffff) background.
# Set horizontal and vertical grid lines to grey (cccccc).
c.setPlotArea(55, 55, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc)
# Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
# includes embedded images for highlight. The text is on a light grey (dddddd) background,
# with glass lighting effect.
c.addTitle(
"<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Molecular Temperature " \
"Control <*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 15).setBackground(
0xdddddd, 0, ChartDirector::glassEffect())
# Add a title to the y axis
c.yAxis().setTitle("Temperature")
# Add a title to the x axis using CMDL
c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*> Elapsed Time (hour)<*/*>")
# 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 axes width to 2 pixels
c.xAxis().setWidth(2)
c.yAxis().setWidth(2)
# Add a line layer to the chart
lineLayer = c.addLineLayer2()
# Add a blue (0xff) data set to the line layer, with yellow (0xffff80) diamond symbols
lineLayer.addDataSet(data, 0x0000ff).setDataSymbol(ChartDirector::DiamondSymbol, 12,
0xffff80)
# Set the line width to 2 pixels
lineLayer.setLineWidth(2)
# Add a box whisker layer to the chart. Use the upper and lower mark of the box whisker
# layer to act as error zones. The upper and lower marks are computed using the ArrayMath
# object.
errLayer = c.addBoxWhiskerLayer(nil, nil, ChartDirector::ArrayMath.new(data).add(errData
).result(), ChartDirector::ArrayMath.new(data).sub(errData).result(), data,
ChartDirector::Transparent, 0xbb6633)
# Set the line width to 2 pixels
errLayer.setLineWidth(2)
# Set the error zone to occupy half the space between the symbols
errLayer.setDataGap(0.5)
# Add a custom CDML text at the bottom right of the plot area as the logo
c.addText(575, 247,
"<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>" \
"<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
ChartDirector::BottomRight)
# Output the chart
send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline")
end
end |
