This example demonstrates swapping the x and y axes to produce an rotated area chart in which the area goes from left to right (instead of bottom to top).
The x and y axes in the example are configured as follows:
- Initially, the x-axis is horizontal from left to right at the bottom of the plot area, while the y-axis is vertical from bottom to top at the left side of the plot area.
- Swap the x and y axes using XYChart.swapXY. Now the x-axis is vertical from bottom to top at the left side of the chart, while the y-axis is horizontal from left to right at the bottom of the chart.
- Use XYChart.setYAxisOnRight to move the y-axis to the opposite side of the plot area, so that the y-axis is at the top of the plot area. (Note: the "right" word on setYAxisOnRight means the "right" side before "swapXY" rotation. After rotation, the right side will become to top side.)
- Use Axis.setReverse to reverse the direction of the x-axis, so that the x-axis is vertical from top to bottom (instead of from bottom to top).
The area in this chart is filled using a gradient color created with
BaseChart.gradientColor.
[Web Version (in ASP)] aspdemo\rotatedarea.asp
<%@ language="vbscript" %>
<%
Set cd = CreateObject("ChartDirector.API")
' The data for the area chart
data = Array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50, 66, 56, _
48, 52, 65, 62)
' The labels for the area chart
labels = Array(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 320 x 320 pixels
Set c = cd.XYChart(320, 320)
' Swap the x and y axis to become a rotated chart
Call c.swapXY()
' Set the y axis on the top side (right + rotated = top)
Call c.setYAxisOnRight()
' Reverse the x axis so it is pointing downwards
Call c.xAxis().setReverse()
' Set the plotarea at (50, 50) and of size 200 x 200 pixels. Enable horizontal and vertical grids by
' setting their colors to grey (0xc0c0c0).
Call c.setPlotArea(50, 50, 250, 250).setGridColor(&Hc0c0c0, &Hc0c0c0)
' Add a line chart layer using the given data
Call c.addAreaLayer(data, c.gradientColor(50, 0, 300, 0, &Hffffff, &H0000ff))
' Set the labels on the x axis. Append "m" after the value to show the unit.
Call c.xAxis().setLabels2(labels, "{value} m")
' Display 1 out of 3 labels.
Call c.xAxis().setLabelStep(3)
' Add a title to the x axis
Call c.xAxis().setTitle("Depth")
' Add a title to the y axis
Call c.yAxis().setTitle("Carbon Dioxide Concentration (ppm)")
' Output the chart
Set viewer = cd.WebChartViewer(Request, "chart1")
Call viewer.setChart(c, cd.SVG)
' Include tool tip for the chart
viewer.ImageMap = c.getHTMLImageMap("", "", _
"title='Carbon dioxide concentration at {xLabel}: {value} ppm'")
%>
<!DOCTYPE html>
<html>
<head>
<title>Rotated Area Chart</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Rotated Area Chart
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.asp?file=<%= Request("SCRIPT_NAME") %>">View Chart Source Code</a>
</div>
<!-- ****** Here is the chart image ****** -->
<%= viewer.renderHTML() %>
</body>
</html>
[Windows Version (in Visual Basic)] vbdemo\rotatedarea.cls
Public Sub createChart(viewer As Object, chartIndex As Integer)
Dim cd As New ChartDirector.API
' The data for the area chart
Dim data()
data = Array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50, 66, _
56, 48, 52, 65, 62)
' The labels for the area chart
Dim labels()
labels = Array(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 320 x 320 pixels
Dim c As XYChart
Set c = cd.XYChart(320, 320)
' Swap the x and y axis to become a rotated chart
Call c.swapXY()
' Set the y axis on the top side (right + rotated = top)
Call c.setYAxisOnRight()
' Reverse the x axis so it is pointing downwards
Call c.xAxis().setReverse()
' Set the plotarea at (50, 50) and of size 200 x 200 pixels. Enable horizontal and vertical
' grids by setting their colors to grey (0xc0c0c0).
Call c.setPlotArea(50, 50, 250, 250).setGridColor(&Hc0c0c0, &Hc0c0c0)
' Add a line chart layer using the given data
Call c.addAreaLayer(data, c.gradientColor(50, 0, 300, 0, &Hffffff, &H0000ff))
' Set the labels on the x axis. Append "m" after the value to show the unit.
Call c.xAxis().setLabels2(labels, "{value} m")
' Display 1 out of 3 labels.
Call c.xAxis().setLabelStep(3)
' Add a title to the x axis
Call c.xAxis().setTitle("Depth")
' Add a title to the y axis
Call c.yAxis().setTitle("Carbon Dioxide Concentration (ppm)")
' Output the chart
Set viewer.Picture = c.makePicture()
'include tool tip for the chart
viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
"title='Carbon dioxide concentration at {xLabel}: {value} ppm'")
End Sub
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