ChartDirector 6.0 (ColdFusion Edition)

V-Bar Meter Orientation


      

This example demonstration various orientations for vertical bar meters.

In a vertical bar meter, the scale labels can be positioned on the left or right side of the meter scale. This is controlled by the last argument to LinearMeter.setMeter, which can be Left or Right. The color scale can also be position on the same or opposite side as the scale labels.

Source Code Listing

[File: cfdemo/vbarmeterorientation.cfm]
<cfscript>

// ChartDirector for ColdFusion API Access Point
cd = CreateObject("java", "ChartDirector.CFChart");

// A utility to allow us to create arrays with data in one line of code
function Array() {
    var result = ArrayNew(1);
    var i = 0;
    for (i = 1; i LTE ArrayLen(arguments); i = i + 1)
        result[i] = arguments[i];
    return result;
}

// Function to create the demo charts
function createChart(chartIndex)
{
    // Declare local variables
    var value = 0;
    var barColor = 0;
    var m = 0;
    var alignment = 0;
    var meterXPos = 0;
    var labelGap = 0;
    var colorScalePos = 0;
    var smoothColorScale = 0;

    // The value to display on the meter
    value = 74.25;

    // Bar colors of the meters
    barColor = Array("0x2299ff", "0x00ee00", "0xaa66ee", "0xff7711");

    // Create a LinearMeter object of size 70 x 240 pixels with very light grey (0xeeeeee)
    // backgruond and a grey (0xaaaaaa) 3-pixel thick rounded frame
    m = cd.LinearMeter(70, 240, "0xeeeeee", "0xaaaaaa");
    m.setRoundedFrame(cd.Transparent);
    m.setThickFrame(3);

    // This example demonstrates putting the text labels at the left or right side of the meter
    // scale, and putting the color scale on the same side as the labels or on opposite side.
    alignment = Array(cd.Left, cd.Left, cd.Right, cd.Right);
    meterXPos = Array(28, 38, 12, 21);
    labelGap = Array(2, 12, 10, 2);
    colorScalePos = Array(53, 28, 36, 10);

    // Configure the position of the meter scale and which side to put the text labels
    m.setMeter(meterXPos[chartIndex + 1], 18, 20, 205, alignment[chartIndex + 1]);

    // Set meter scale from 0 - 100, with a tick every 10 units
    m.setScale(0, 100, 10);

    // To put the color scale on the same side as the text labels, we need to increase the gap
    // between the labels and the meter scale to make room for the color scale
    m.setLabelPos(False, labelGap[chartIndex + 1]);

    // Add a smooth color scale to the meter
    smoothColorScale = Array(0, "0x0000ff", 25, "0x0088ff", 50, "0x00ff00", 75, "0xdddd00", 100,
        "0xff0000");
    m.addColorScale(smoothColorScale, colorScalePos[chartIndex + 1], 6);

    // Add a bar from 0 to value with glass effect and 4 pixel rounded corners
    m.addBar(0, value, barColor[chartIndex + 1], cd.glassEffect(cd.NormalGlare, cd.Left), 4);

    // Output the chart
    return m.makeSession(GetPageContext(), "chart" & chartIndex);
}

chart0URL = createChart(0);
chart1URL = createChart(1);
chart2URL = createChart(2);
chart3URL = createChart(3);

</cfscript>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    V-Bar Meter Orientation
</div>
<hr style="border:solid 1px #000080" />
<cfoutput>
<div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em">
    <a href='viewsource.cfm?file=#CGI.SCRIPT_NAME#'>View Source Code</a>
</div>
<img src="getchart.cfm?#chart0URL#" />
<img src="getchart.cfm?#chart1URL#" />
<img src="getchart.cfm?#chart2URL#" />
<img src="getchart.cfm?#chart3URL#" />
</cfoutput>
</body>
</html>