Legend dataprovider problem

Hello there,
I would like to create a legend to a gantt chart in order to identify the colors in the chart.
For that I created a xml to be used as a data provider.
The XML is:
<?xml version="1.0" encoding="utf-8"?>
<items>
     <item id="1" label="livre a 100%" color="0x66CC00" />
     <item id="2" label="livre de 75% a 100%" color="0x009900" />
     <item id="3" label="livre de 50% a 75%" color="0xFFFF33" />
     <item id="4" label="livre de 25% a 50%" color="0xFF9900" />
     <item id="5" label="livre de 0% a 25%" color="0x3366FF" />
     <item id="6" label="não está livre" color="0x3300CC" />
</items>
And I already have the labels in the legend, but I'm having some problem's with the color... The legend shows every marker as black.
<mx:Legend id="legAvailable" dataProvider="{legAvai}"
     toolTip="Available legend" backgroundColor="#CDCDCD"/>
Can anyone help or give any idea of how to sort this out?!?! I'm in a bit of a tight schedule...
Thanks in advance.

I've been looking for some answers and haven't found anything yet...
Does anyone has any idea of how to work this out?? Or why are all the markers colored as black...
Thank you
P.S. I'm leaving an image so you can visualize my problem...

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>
quote:
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Hi,
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<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    xmlns:components="com.yahoo.data.digits.components.*"
    layout="vertical"
    backgroundColor="#FFFFFF"
    backgroundGradientAlphas="[0,0]"
    width="100%" creationComplete="cc()">
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        <![CDATA[
            import mx.utils.ArrayUtil;
            import mx.collections.XMLListCollection;
            import mx.collections.Sort;
            import mx.charts.CategoryAxis;
            import mx.charts.chartClasses.Series;
            import mx.collections.ArrayCollection;
            import mx.charts.series.LineSeries;
            import mx.charts.LineChart;
            public var dataForLineChart:ArrayCollection = new ArrayCollection([
                                                            {DATE:"20090509", VALUE:"3538943147"},
                                                            {DATE:"20090510", VALUE:"5047760823"},
                                                            {DATE:"20090511", VALUE:"5046865494"},
                                                            {DATE:"20090512", VALUE:"4983771032"},
                                                            {DATE:"20090513", VALUE:"5032039834"},
                                                            {DATE:"20090514", VALUE:"4897303525"},
                                                            {DATE:"20090515", VALUE:"4496020991"},
                                                            {DATE:"20090516", VALUE:"3525547244"},
                                                            {DATE:"20090517", VALUE:"3596982398"},
                                                            {DATE:"20090518", VALUE:"4947978254"},
                                                            {DATE:"20090519", VALUE:"4932182219"},
                                                            {DATE:"20090520", VALUE:"4909069875"},
                                                            {DATE:"20090521", VALUE:"4781830807"},
                                                            {DATE:"20090522", VALUE:"4431176690"},
                                                            {DATE:"20090523", VALUE:"3476323135"},
                                                            {DATE:"20090524", VALUE:"3444512240"},
                                                            {DATE:"20090525", VALUE:"4329018809"},
                                                            {DATE:"20090526", VALUE:"5086390081"},
                                                            {DATE:"20090527", VALUE:"5012778551"},
                                                            {DATE:"20090528", VALUE:"4770167180"},
                                                            {DATE:"20090529", VALUE:"4408927585"},
                                                            {DATE:"20090531", VALUE:"3488537357"},
                                                            {DATE:"20090601", VALUE:"3630748728"},
                                                            {DATE:"20090602", VALUE:"5007093913"},
                                                            {DATE:"20090603", VALUE:"5015210737"},
                                                            {DATE:"20090604", VALUE:"4999236097"},
                                                            {DATE:"20090605", VALUE:"4934609881"},
                                                            {DATE:"20090606", VALUE:"4588135281"},
                                                            {DATE:"20090607", VALUE:"3615291868"},
                                                            {DATE:"20090608", VALUE:"3666209346"},
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                lineSeries = new LineSeries();
                lineSeries.dataProvider = dataForLineChart;
                lineSeries.dataFunction = lineSeriesDataFunction;
                lineSeriesArray.push(lineSeries);
                var dLength:int = dataForLineChart.length;
                for (var k:int=0;k<dLength;k++)
                    valuesArray.push(dataForLineChart[k].VALUE);
                    datesArray.push(dataForLineChart[k].DATE);
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                var lineCategoryXAxis:CategoryAxis = new CategoryAxis();
                //lineCategoryXAxis.dataProvider = getDatePointsArray(datesArray);
                lineCategoryXAxis.categoryField = "DATE";
                lineCategoryXAxis.labelFunction = lineCategoryXAxisLabelFunction;
                lineChart.horizontalAxis = lineCategoryXAxis;
                var lineCategoryYAxis:CategoryAxis = new CategoryAxis();
                //lineCategoryYAxis.dataProvider = getNumericPointsArray(valuesArray)
                lineCategoryYAxis.categoryField = "VALUE";
                lineCategoryYAxis.labelFunction = lineCategoryYAxisLabelFunction;
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                chartContainer.removeAllChildren();
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                /** Will do date formatting here */
                return categoryItem.DATE;
                //return categoryItem.toString();
            private function lineCategoryYAxisDataFunction(axis:CategoryAxis, item:Object):Object
                return item.VALUE;
            private function lineCategoryYAxisLabelFunction(categoryValue:Object, previousCategoryValue:Object, axis:CategoryAxis, categoryItem:Object):String
                /** Will do number formatting here */
                return categoryItem.VALUE;
                //return categoryItem.toString();
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                if (fieldName == "yValue")
                    return item.VALUE;
                else if(fieldName == "xValue")
                    return item.DATE.toString();
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            private function getNumericPointsArray(inputArray:Array):Array
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                /** Sorting the array to find min and max values */
                var inputAC:ArrayCollection = new ArrayCollection(inputArray);
                inputAC.sort = new Sort();
                inputAC.refresh();
                var minValue:Number = Number(inputAC.getItemAt(0));
                var maxValue:Number = Number(inputAC.getItemAt(inputAC.length - 1));
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                var i:int;
                var diffFactor:Number;
                var diffMinMax:Number;
                /** axis takes 0 by default so not pushing that into array */
                if (minValue == maxValue)
                    /** Dividing by 6 to get 5 points */
                    diffFactor = Math.round(maxValue / 6);
                    for (i=1;i<=5;i++)
                        outputArray.push((i * diffFactor));
                    outputArray.push(maxValue);
                else
                    outputArray.push(minValue);
                    /** Find some points between minValue and maxValue */
                    diffMinMax = (maxValue - minValue);
                    /** Dividing by 5 to get 4 points */
                    diffFactor = Math.round(diffMinMax / 5);
                    for (i=1;i<=4;i++)
                        outputArray.push((i * diffFactor) + minValue);
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            private function getDatePointsArray(inputArray:Array):Array
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                var stepValue:int = (numValues - 2) / 5;
                var outputArray:Array = new Array();
                outputArray.push(inputArray[0]);
                /** Starting from 1 and ending in numValues - 2 because first and last values of array are already taken.*/
                for (var i:int=stepValue;i<numValues - 2;i+=stepValue)
                    outputArray.push(inputArray[i]);
                outputArray.push(inputArray[numValues - 1]);
                return outputArray;
        ]]>
    </mx:Script>
    <mx:HBox id="chartContainer" width="100%" height="100%">
    </mx:HBox>
</mx:Application>
As you can see in the code, my dataPovider is complex (can become much more complex). In the code above, the ArrayCollection has only one element currently but will have more. So the graph should be plotted in such a way that each array element corresponds to one line series.
What I need to achive is that the horizontal axis should show dates only from the "0th" element of the ArrayCollection and that too only some limited 6-7 points, the rest of the ArrayCollection elements should get plotted according to these dates.
I think I was able to explain my problem. Pls let me know if any more explaination is required.
P.S. Re-attaching the file.
Thanks in advance

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Thank you for posting to the NI Discussion Forums. I was unable to reproduce this problem with LabVIEW 8.0.1.
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<?xml version="1.0"?>
<s:Application
xmlns:fx="
http://ns.adobe.com/mxml/2009"xmlns:mx="
library://ns.adobe.com/flex/mx"xmlns:s="
library://ns.adobe.com/flex/spark"creationComplete="initApp()"
height="
1050" width="600">
<s:layout>
<s:VerticalLayout/>
</s:layout>
<fx:Script><![CDATA[
import mx.collections.ArrayCollection;[
Bindable]
private var yearlyData:ArrayCollection = new ArrayCollection([{month:
"Aug", a:1, b:10, c:1, d:10, e:0},{month:
"July", a:1, b:10, c:10, d:10, e:0},{month:
"June", a:10, b:10, c:10, d:10, e:0},{month:
"May", a:10, b:10, c:10, d:0, e:10},{month:
"April", a:10, b:10, c:0, d:10, e:10},{month:
"March", a:10, b:0, c:10, d:10, e:10},{month:
"February", a:0, b:10, c:10, d:10, e:10},{month:
"January", a:10, b:10, c:10, d:10, e:10}]);
private function initApp():void {}
]]>
</fx:Script>
<s:Panel title="Stacked Bar Chart - Problems with DataTips for Zero Value Items" id="panel1">
<s:layout>
<s:HorizontalLayout/>
</s:layout>
<mx:BarChart id="myChart" type="stacked"dataProvider="
{yearlyData}" showDataTips="true">
<mx:verticalAxis>
<mx:CategoryAxis categoryField="month"/>
</mx:verticalAxis>
<mx:series>
<mx:BarSeries
xField="a"displayName="
aaa"/>
<mx:BarSeries
xField="b"displayName="
bbb"/>
<mx:BarSeries
xField="c"displayName="
ccc"/>
<mx:BarSeries
xField="d"displayName="
ddd"/>
<mx:BarSeries
xField="e"displayName="
eee"/>
</mx:series>
</mx:BarChart>
<mx:Legend dataProvider="{myChart}"/>
</s:Panel>
<s:RichText width="700">
<s:br></s:br>
<s:p fontWeight="bold">The problem:</s:p>
<s:p>Datatips for zero value data points appear on left side of bar (if data point is not the first point in series).</s:p>
<s:br></s:br>
<s:p fontWeight="bold">For example:</s:p>
<s:p>1) For "June", eee = 0, mouse over the left side of the bar to see a datatip for "eee". Not good.</s:p>
<s:br></s:br>
<s:p>2) For "July", eee = 0 and aaa = 1, can't see the datatip for "aaa", instead "eee" shows. Real bad.</s:p>
<s:br></s:br>
<s:p>3) For "Feb", aaa = 0, datatip for "aaa" (first point) does not show. This is good.</s:p>
<s:br></s:br>
<s:p>4) For "Mar", bbb = 0, datatip for "bbb" shows on the left side of the bar. Not good.</s:p>
<s:br></s:br>
<s:p fontWeight="bold">Challenge:</s:p>
<s:p>How can we hide/remove datatips for zero value data points?</s:p>
<s:br></s:br>
</s:RichText></s:Application>

FYI.
Still have the issue after upgrading to the latest Flex Builder 4.0.1 with SDK 4.1.0 build 16076.
Posted this as a bug in the Adobe Flex Bug and Issue Management system.     JIRA
http://bugs.adobe.com/jira/browse/FLEXDMV-2478
Which is a clone of a similar issue with Flex 3 ...
http://bugs.adobe.com/jira/browse/FLEXDMV-1984

Pie Chart with Legend

Hey Experts,
I have a small issue but cannot seem to find the solution. I have a pie chart with legends which I want to show side by side (horizontally). First pie chart and then legends. My requirement is that when the window is resized, the pie chart should also resize. I am able to show the chart and legends horizontally but when the legends list is long, the pie chart is always aligned in the center vertically. I tried setting all properties such as verticalAlign = "top", verticalCenter = "false", tried putting pie chart and legends in a separate VBox but nothing seems to work. Below is the code snippet.
I believe others would have faced this problem. Can someone help?
<mx:HBox width="100%" height="100%" verticalAlign="top" verticalCenter="false">
     <mx:VBox width="100%" verticalAlign="top" verticalCenter="false">
          <mx:PieChart id="pieChart" width="100%" height="100%" showDataTips="true" minWidth="200" minHeight="200" verticalCenter="false"/>
     </mx:VBox>
     <mx:VBox width="100%" verticalAlign="top" verticalCenter="false">
          <mx:Legend width="100%" height="100%" dataProvider="{pieChart}"/>
     </mx:VBox>
</mx:HBox>

Hi Dajji,
Here is the code which resolves the problem...
Note: In the code below I have removed the percentage width and height for PieChart.....that resolves the problem.....but the thing here is as you resize
your browser window the piechart width and height will not change accordingly...? Do you need PieChart to change its dimensions as your browser window
resizes...???
However if you specify width="100%" and height="100%" for PieChart you never gonna acheive the PieChart to be vertically alined to top.....why because
as you specified width="100%" and height="100%" for PieChart it occupies the total dimensions of the VBox but the actual visible portion dimensions are
less... because within the VBox you also have the legends so Flex will assign the sizes proportionately....for PieChart and Legends..
Hope you got my point...So you should remove the width="100%" and height="100%" for PieChart then you can acheive what you needed...
<?xml version="1.0"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" height="100%" width="100%">
    <mx:Script>
        <![CDATA[
        import mx.collections.ArrayCollection;
        [Bindable]
        private var medalsAC:ArrayCollection = new ArrayCollection( [
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 },
            { Country: "USA", Gold: 35, Silver:39, Bronze: 29 },
            { Country: "China", Gold: 32, Silver:17, Bronze: 14 },
            { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 } ]);
        private function displayGold(data:Object, field:String, index:Number, percentValue:Number):String {
            var temp:String= (" " + percentValue).substr(0,6);
            return data.Country + ": " + '\n' + "Total Gold: " + data.Gold + '\n' + temp + "%";
        ]]>
    </mx:Script>
    <mx:Panel title="Olympics 2004 Medals Tally Panel" height="100%" width="100%" layout="horizontal" verticalAlign="top">
           <mx:VBox verticalAlign="top" height="100%" width="100%">
             <mx:PieChart id="chart"
                 showDataTips="true"
                 dataProvider="{medalsAC}">
                 <mx:series>
                     <mx:PieSeries
                         nameField="Country"
                         field="Gold"
                         labelFunction="displayGold">
                     </mx:PieSeries>
                 </mx:series>
             </mx:PieChart>
           </mx:VBox>
         <mx:Legend dataProvider="{chart}"/>
    </mx:Panel>
</mx:Application>
Thanks,
Bhasker Chari

Screen resolution problem for components in a canvas

Hi,
I am developing a Flex application, and I am using more than
one canvases in a single page(with in application tag).
And one canvas has elements like Chart, datagrid, legent
& a label.
Width & Height I gave to canvas and all its elements
(except legend & label) is in percentages
The problem I am facing is that,
when I change the screen resolution, and
when I press F11(full screen) in IE, the all objects except
legend & label are increasing/decreasing, and in some cases
lagend & label are overlapping in the chart & data grid.
Could anybody please advise what I need to follow to
eliminate these kind of problems.
Thanks in advance.
Pavan

Ooooooh, haha my bad, I didn't realize you were talking about
relative positioning on your app.
Here's what's happening. Your component/application is in
ABSOLUTE layout mode, so you can specify coordinates for where
controls and components should be placed. When the size of the
application changes, these coordinates are hard-coded, and they
will always display in the same place, which can case them to run
into components that have been resized to fit the new application
size. Now fixing those numbers is not easy. In fact, I don't know
of any way to make those numbers dynamic so they adjust when the
application size adjusts.
Instead, I suggest using constraints or Vbox/Hbox rather than
hardcoded coordinates. With constraints, you can specify how far
your Legend component is from the edges of the container it's in.
Or, you can use the VBox or HBox so your component is always in the
place it needs to be.
<mx:HBox width="80%" height="50%" top="10" left="10">
<mx:PieChart id="piechart1">
<mx:series>
<mx:PieSeries displayName="Series 1" field=""/>
</mx:series>
</mx:PieChart>
<mx:Legend dataProvider="{piechart1}"/>
</mx:HBox>
In this example, You can see I set top and left to 10. This
means that my HBox will be exactly 10 pixels from the top and left
side of my application (or container, or whatever it's confined
to). The Piechart and Legend fit neatly inside the HBox, and
because it's an HBox, they will be side by side horizontally.
If you need spacing between your chart and legend, you can
always use the Spacer control under Layout.
<mx:HBox width="80%" height="50%" top="10" left="10">
<mx:PieChart id="piechart1">
<mx:series>
<mx:PieSeries displayName="Series 1" field=""/>
</mx:series>
</mx:PieChart>
<mx:Spacer width="100%"/>
<mx:Legend dataProvider="{piechart1}"/>
</mx:HBox>
As you can see, the Spacer control is separating our chart
and the Legend by a width specified. Always use a percentage here,
as you'll run into problems I talked about in my previous post.
100% means the chart and the Legend will be as far away as they can
be while staying within the Hbox container. If you decreased it to
50%, they would only be half as far away.
Hope this helps.
EDIT:
One last example of a pie chart and a Legend within a canvas.
Each object has constraints to the canvas, which lets us put them
whereever we want within the canvas:
<mx:Canvas x="0" y="0" width="80%">
<mx:PieChart id="piechart1" left="10" top="10">
<mx:series>
<mx:PieSeries displayName="Series 1" field=""/>
</mx:series>
</mx:PieChart>
<mx:Legend dataProvider="{piechart1}" right="10"
bottom="10"/>
</mx:Canvas>
From this example, the chart will always line up to be 10
pixels from the top and left of our canvas. The Legend however,
will always line up to be 10 pixels from the right side and bottom
of our canvas. Adjusting the canvas size, the chart size, or the
legend size will give you the desired distance between these two
objects.

Legend: Can't change fontsize

Hi,
I have created an PieChart with a Legend. The FontSize of the
Legend is too small and I want to change it but it doesn't work:
<mx:Legend dataProvider="{chartLief}"
height="80%"
width="25%"
fontSize="24">
</mx:Legend>
The Legend is displayed but only with the standard fontsize
(something like 9 or 10).
I hope you can help me. Thanks in advance.
Nika267

The problem is based on a bug that was deferred (
http://bugs.adobe.com/jira/browse/FLEXDMV-1656).
There are several workarounds, but the simplest is to set the
fontSize on the LegendItem type selector, like this:
<mx:Style>
LegendItem {
fontSize:24;
</mx:Style>
hth,
matt horn
flex docs

Legend dataprovider problem

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