Flex Examples » LineSeries http://blog.flexexamples.com Just a bunch of Adobe Flex Examples Wed, 26 Jan 2011 18:09:51 +0000 en hourly 1 Changing default line colors in a Flex LineChart control http://blog.flexexamples.com/2007/11/13/changing-default-line-colors-in-a-flex-linechart-control/ http://blog.flexexamples.com/2007/11/13/changing-default-line-colors-in-a-flex-linechart-control/#comments Tue, 13 Nov 2007 16:06:35 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/13/changing-default-line-colors-in-a-flex-linechart-control/ The following example shows how you can change the line colors in a LineChart in Flex by setting the lineStroke style in MXML or ActionScript, as seen in the following snippets:

MXML:

<mx:LineSeries id="closeSeries" yField="@close" form="curve" displayName="Close"> <mx:lineStroke> <mx:Stroke color="haloGreen" weight="2" alpha="0.6" /> </mx:lineStroke> </mx:LineSeries>

ActionScript:

<mx:LineSeries id="closeSeries" yField="@close" form="curve" displayName="Close" /> ... closeSeries.setStyle("lineStroke", new [...]]]> The following example shows how you can change the line colors in a LineChart in Flex by setting the lineStroke style in MXML or ActionScript, as seen in the following snippets:

MXML:

<mx:LineSeries id="closeSeries" yField="@close" form="curve" displayName="Close">
    <mx:lineStroke>
        <mx:Stroke color="haloGreen" weight="2" alpha="0.6" />
    </mx:lineStroke>
</mx:LineSeries>

ActionScript:

<mx:LineSeries id="closeSeries" yField="@close" form="curve" displayName="Close" />
...
closeSeries.setStyle("lineStroke", new Stroke(0xFF0000, 2, 0.4));

Full code after the jump.

View MXML

<?xml version="1.0"?>
<!-- http://blog.flexexamples.com/2007/11/13/changing-default-line-colors-in-a-flex-linechart-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            import mx.styles.StyleManager;
        ]]>
    </mx:Script>

    <mx:XMLListCollection id="dp">
        <mx:source>
            <mx:XMLList>
                <quote date="8/27/2007" open="40.38" close="40.81" />
                <quote date="8/24/2007" open="40.5" close="40.41" />
                <quote date="8/23/2007" open="40.82" close="40.6" />
                <quote date="8/22/2007" open="40.4" close="40.77" />
                <quote date="8/21/2007" open="40.41" close="40.13" />
                <quote date="8/20/2007" open="40.55" close="40.74" />
                <quote date="8/17/2007" open="40.18" close="40.32" />
                <quote date="8/16/2007" open="39.83" close="39.96" />
                <quote date="8/15/2007" open="40.22" close="40.18" />
                <quote date="8/14/2007" open="41.01" close="40.41" />
                <quote date="8/13/2007" open="41" close="40.83" />
                <quote date="8/10/2007" open="41.3" close="41.06" />
                <quote date="8/9/2007" open="39.9" close="40.75" />
                <quote date="8/8/2007" open="39.61" close="40.23" />
                <quote date="8/7/2007" open="39.08" close="39.42" />
                <quote date="8/6/2007" open="38.71" close="39.38" />
                <quote date="8/3/2007" open="39.47" close="38.75" />
                <quote date="8/2/2007" open="39.4" close="39.52" />
                <quote date="8/1/2007" open="40.29" close="39.58" />
            </mx:XMLList>
        </mx:source>
    </mx:XMLListCollection>

    <mx:ApplicationControlBar dock="true">
        <mx:Button label="0xFF0000" click="closeSeries.setStyle('lineStroke', new Stroke(0xFF0000, 2, 0.4));" />
        <mx:Button label="0xFF00FF" click="closeSeries.setStyle('lineStroke', new Stroke(0xFF00FF, 2, 1.0));" />
        <mx:Button label="haloSilver" click="closeSeries.setStyle('lineStroke', new Stroke(StyleManager.getColorName('haloSilver'), 2, 1.0));" />

        <mx:Spacer width="100%" />

        <mx:Legend dataProvider="{lineChart}" />
    </mx:ApplicationControlBar>

    <mx:LineChart id="lineChart"
            showDataTips="true"
            dataProvider="{dp}"
            width="100%"
            height="100%">

        <!-- series filters -->
        <mx:seriesFilters>
            <mx:Array />
        </mx:seriesFilters>

        <!-- vertical axis -->
        <mx:verticalAxis>
            <mx:LinearAxis baseAtZero="false" title="Price" />
        </mx:verticalAxis>

        <!-- horizontal axis -->
        <mx:horizontalAxis>
            <mx:CategoryAxis id="ca" categoryField="@date" title="Date" />
        </mx:horizontalAxis>

        <!-- horizontal axis renderer -->
        <mx:horizontalAxisRenderers>
            <mx:AxisRenderer axis="{ca}" canDropLabels="true" />
        </mx:horizontalAxisRenderers>

        <!-- series -->
        <mx:series>
            <mx:LineSeries id="closeSeries" yField="@close" form="curve" displayName="Close">
                <mx:lineStroke>
                    <mx:Stroke color="haloGreen" weight="2" alpha="0.6" />
                </mx:lineStroke>
            </mx:LineSeries>
            <mx:LineSeries yField="@open" form="curve" displayName="Open">
                <mx:lineStroke>
                    <mx:Stroke color="haloOrange" weight="2" alpha="0.6" />
                </mx:lineStroke>
            </mx:LineSeries>
        </mx:series>
    </mx:LineChart>

</mx:Application>

View source is enabled in the following example.

When setting a stroke in ActionScript, note that you must pass the stroke color as a numeric value (like 0xFF0000), not as a color name (like “red”):

closeSeries.setStyle("lineStroke", new Stroke(0xFF0000, 2, 0.4));

If you want to use a named color, you can use the static StyleManager.getColorName() method, as shown in the following snippet:

closeSeries.setStyle("lineStroke", new Stroke(StyleManager.getColorName("red"), 2, 1.0));
 
]]> http://blog.flexexamples.com/2007/11/13/changing-default-line-colors-in-a-flex-linechart-control/feed/ 6 Removing the default drop shadow from a LineChart chart in Flex http://blog.flexexamples.com/2007/11/13/removing-the-default-drop-shadow-from-a-linechart-chart-in-flex/ http://blog.flexexamples.com/2007/11/13/removing-the-default-drop-shadow-from-a-linechart-chart-in-flex/#comments Tue, 13 Nov 2007 07:16:30 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/13/removing-the-default-drop-shadow-from-a-linechart-chart-in-flex/ The following example shows how you can remove the default drop shadow from a LineChart chart in Flex by setting the seriesFilters property, as seen in the following snippets:

<mx:LineChart id="lineChart" showDataTips="true" dataProvider="{dp}" width="100%" height="100%" seriesFilters="[]"> <!-- . . . --> </mx:LineChart> <mx:LineChart id="lineChart" showDataTips="true" dataProvider="{dp}" width="100%" height="100%"> <!-- series filters --> <mx:seriesFilters> <mx:Array /> [...]]]> The following example shows how you can remove the default drop shadow from a LineChart chart in Flex by setting the seriesFilters property, as seen in the following snippets:

<mx:LineChart id="lineChart"
        showDataTips="true"
        dataProvider="{dp}"
        width="100%"
        height="100%"
        seriesFilters="[]">

    <!-- . . . -->

</mx:LineChart>

<mx:LineChart id="lineChart"
        showDataTips="true"
        dataProvider="{dp}"
        width="100%"
        height="100%">

    <!-- series filters -->
    <mx:seriesFilters>
        <mx:Array />
    </mx:seriesFilters>

    <!-- . . . -->

</mx:LineChart>

Full code after the jump.

View MXML

<?xml version="1.0"?>
<!-- http://blog.flexexamples.com/2007/11/13/removing-the-default-drop-shadow-from-a-linechart-chart-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            private function init(evt:Event):void {
                var chart:LineChart = evt.currentTarget as LineChart;
                seriesFilterArr = chart.seriesFilters;
            }

            private function checkBox_click(evt:MouseEvent):void {
                var len:uint = lineChart.seriesFilters.length;
                if (len > 0) {
                    lineChart.seriesFilters = [];
                } else {
                    lineChart.seriesFilters = seriesFilterArr;
                }
            }
        ]]>
    </mx:Script>

    <mx:XMLListCollection id="dp">
        <mx:source>
            <mx:XMLList>
                <quote date="8/27/2007" open="40.38" close="40.81" />
                <quote date="8/24/2007" open="40.5" close="40.41" />
                <quote date="8/23/2007" open="40.82" close="40.6" />
                <quote date="8/22/2007" open="40.4" close="40.77" />
                <quote date="8/21/2007" open="40.41" close="40.13" />
                <quote date="8/20/2007" open="40.55" close="40.74" />
                <quote date="8/17/2007" open="40.18" close="40.32" />
                <quote date="8/16/2007" open="39.83" close="39.96" />
                <quote date="8/15/2007" open="40.22" close="40.18" />
                <quote date="8/14/2007" open="41.01" close="40.41" />
                <quote date="8/13/2007" open="41" close="40.83" />
                <quote date="8/10/2007" open="41.3" close="41.06" />
                <quote date="8/9/2007" open="39.9" close="40.75" />
                <quote date="8/8/2007" open="39.61" close="40.23" />
                <quote date="8/7/2007" open="39.08" close="39.42" />
                <quote date="8/6/2007" open="38.71" close="39.38" />
                <quote date="8/3/2007" open="39.47" close="38.75" />
                <quote date="8/2/2007" open="39.4" close="39.52" />
                <quote date="8/1/2007" open="40.29" close="39.58" />
            </mx:XMLList>
        </mx:source>
    </mx:XMLListCollection>

    <mx:Array id="seriesFilterArr" />

    <mx:ApplicationControlBar dock="true">
        <mx:CheckBox id="checkBox"
                label="toggle series filters:"
                labelPlacement="left"
                selected="false"
                click="checkBox_click(event);" />
    </mx:ApplicationControlBar>

    <mx:LineChart id="lineChart"
            showDataTips="true"
            dataProvider="{dp}"
            width="100%"
            height="100%"
            creationComplete="init(event);">

        <!-- vertical axis -->
        <mx:verticalAxis>
            <mx:LinearAxis baseAtZero="false" title="Price" />
        </mx:verticalAxis>

        <!-- horizontal axis -->
        <mx:horizontalAxis>
            <mx:CategoryAxis id="ca" categoryField="@date" title="Date" />
        </mx:horizontalAxis>

        <!-- horizontal axis renderer -->
        <mx:horizontalAxisRenderers>
            <mx:AxisRenderer axis="{ca}" canDropLabels="true" />
        </mx:horizontalAxisRenderers>

        <!-- series -->
        <mx:series>
            <mx:LineSeries yField="@close" form="curve" displayName="Close" />
            <mx:LineSeries yField="@open" form="curve" displayName="Open" />
        </mx:series>

    </mx:LineChart>

</mx:Application>

View source is enabled in the following example.

By default, the seriesFilters property contains an array with a single DropShadowFilter with the following properties:
    alpha = 1
    angle = 45
    blurX = 4
    blurY = 4
    color = 0
    distance = 4
    hideObject = false
    inner = false
    knockout = false
    quality = 1
    strength = 1

 
]]> http://blog.flexexamples.com/2007/11/13/removing-the-default-drop-shadow-from-a-linechart-chart-in-flex/feed/ 5 Controlling whether a LineChart should set its base value at zero http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/ http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/#comments Tue, 13 Nov 2007 06:24:04 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/ The following example creates a simple LineChart in Flex 3 and lets you toggle the baseAtZero property which controls whether the minimum or maximum chart value should be set to zero. Since a sample is worth 1000 words, read on.

Full code after the jump.

View MXML

<?xml version="1.0"?> <!-- http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/ --> [...]]]> The following example creates a simple LineChart in Flex 3 and lets you toggle the baseAtZero property which controls whether the minimum or maximum chart value should be set to zero. Since a sample is worth 1000 words, read on.

Full code after the jump.

View MXML

<?xml version="1.0"?>
<!-- http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:XMLListCollection id="dp">
        <mx:source>
            <mx:XMLList>
                <quote date="8/27/2007" open="40.38" high="41.11" low="40.25" close="40.81" />
                <quote date="8/24/2007" open="40.5" high="40.65" low="39.8" close="40.41" />
                <quote date="8/23/2007" open="40.82" high="40.99" low="40.33" close="40.6" />
                <quote date="8/22/2007" open="40.4" high="41" low="40.2" close="40.77" />
                <quote date="8/21/2007" open="40.41" high="40.95" low="39.87" close="40.13" />
                <quote date="8/20/2007" open="40.55" high="40.85" low="39.94" close="40.74" />
                <quote date="8/17/2007" open="40.18" high="40.48" low="39.32" close="40.32" />
                <quote date="8/16/2007" open="39.83" high="40.56" low="39.28" close="39.96" />
                <quote date="8/15/2007" open="40.22" high="41.25" low="40.12" close="40.18" />
                <quote date="8/14/2007" open="41.01" high="41.05" low="40.18" close="40.41" />
                <quote date="8/13/2007" open="41" high="41.13" low="40.26" close="40.83" />
                <quote date="8/10/2007" open="41.3" high="41.62" low="40.1" close="41.06" />
                <quote date="8/9/2007" open="39.9" high="41.74" low="39.86" close="40.75" />
                <quote date="8/8/2007" open="39.61" high="40.67" low="39.5" close="40.23" />
                <quote date="8/7/2007" open="39.08" high="39.91" low="38.61" close="39.42" />
                <quote date="8/6/2007" open="38.71" high="39.77" low="38.54" close="39.38" />
                <quote date="8/3/2007" open="39.47" high="39.66" low="38.7" close="38.75" />
                <quote date="8/2/2007" open="39.4" high="39.8" low="39.05" close="39.52" />
                <quote date="8/1/2007" open="40.29" high="40.49" low="38.57" close="39.58" />
            </mx:XMLList>
        </mx:source>
    </mx:XMLListCollection>

    <mx:ApplicationControlBar dock="true">
        <mx:CheckBox id="checkBox"
                label="baseAtZero:"
                labelPlacement="left"
                selected="false" />

        <mx:Spacer width="100%" />

        <mx:Legend dataProvider="{lineChart}" />
    </mx:ApplicationControlBar>

    <mx:LineChart id="lineChart"
            showDataTips="true"
            dataProvider="{dp}"
            width="100%"
            height="100%">

        <!-- series filters -->
        <mx:seriesFilters>
            <mx:Array />
        </mx:seriesFilters>

        <!-- vertical axis -->
        <mx:verticalAxis>
            <mx:LinearAxis baseAtZero="{checkBox.selected}" title="Price" />
        </mx:verticalAxis>

        <!-- horizontal axis -->
        <mx:horizontalAxis>
            <mx:CategoryAxis id="ca" categoryField="@date" title="Date" />
        </mx:horizontalAxis>

        <!-- horizontal axis renderer -->
        <mx:horizontalAxisRenderers>
            <mx:AxisRenderer axis="{ca}" canDropLabels="true" />
        </mx:horizontalAxisRenderers>

        <!-- series -->
        <mx:series>
            <mx:LineSeries yField="@close" form="curve" displayName="Close" />
            <mx:LineSeries yField="@open" form="curve" displayName="Open" />
        </mx:series>

    </mx:LineChart>

</mx:Application>

View source is enabled in the following example.

For more information on the NumericAxis class’s baseAtZero property, see http://livedocs.adobe.com/flex/3/langref/mx/charts/chartClasses/NumericAxis.html#baseAtZero.

 
]]> http://blog.flexexamples.com/2007/11/12/controlling-whether-a-linechart-should-set-its-base-value-at-zero/feed/ 0