Strok property in column chart

In my application, there is a column chart. if the user click
on any bar of the histogram(column chart), that time, stroke
property will be set in different colour.
<mx:ColumnSeries id="series" xField="xxx" yField="yyy"
>
if i add strok property in above line then it always shows
the strok in the column chart.
but i need it dynamiccaly. like
<mx:ColumnChart id="chart" dataProvider="{xyz}"
name="Histogram Chart" width="100%"
selectionMode="multiple"
height="100%" toolTip="{ccToolTip}" showDataTips="true"
itemClick="histogramBarClick(event)"
>
I want to set the stroke on the click event.
I tried in the function histogramBarClick(event){
ColumnChart.ColumnSeries .setStyle("stroke",s3);
and s3 is
<mx:Stroke id="s3" color="0xFFCC66" weight="2"/>
there is no compile time error but when i run this the i m
getting
Error #1010: A term is undefined and has no properties.
can any body help me?
Thanks

Are you going to show the bar going past the maximum value?
If not, then you should change the Y value when entered into the array to the maximum value allowed. i.e.
if(itemYValue > maxAllowedValue) {
itemYValue = maxAllowedValue;
Where maxAllowedValue is a variable you set on the application to control the maximum value for the chart.
This is assuming that you are loading the values into an Array before updating the chart dataprovider with that array.

Similar Messages

Is Stacked Bar/Column chart Supports Multiseries..?

Hi All
Is Stacked Bar/Column chart Supports Multiseries..?
I was trying to build a Stacked Bar chart .And add a line
series to it But when i run this I'm getting an error
like this
"ReferenceError: Error #1056: Cannot create property offset
on mx.charts.series.LineSeries."
Here is My Code
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
[Bindable]
public var netPrByQtrData:ArrayCollection=new
ArrayCollection
{quarter:"Q4 05", bottom:88.89, middle:11.11, top:0.00,
netPromoter:-88.89},
{quarter:"Q1 06", bottom:80.00, middle:10.00, top:10.00,
netPromoter:-70.00},
{quarter:"Q2 06", bottom:16.67, middle:50.00, top:33.33,
netPromoter:16.67},
{quarter:"Q3 06", bottom:28.57, middle:28.57, top:42.86,
netPromoter:14.29},
{quarter:"Q4 06", bottom:80.00, middle:20.00, top:0.00,
netPromoter:-80.00},
{quarter:"Q1 07", bottom:80.00, middle:0.00, top:20.00,
netPromoter:-60.00},
{quarter:"Q2 07", bottom:60.00, middle:20.00, top:20.00,
netPromoter:-40.00},
{quarter:"Q3 07", bottom:80.00, middle:0.00, top:20.00,
netPromoter:-60.00}
]]>
</mx:Script>
<mx:Panel title="Net Promoter By Quarters" width="500"
height="350" x="31" y="34">
<mx:ColumnChart id="mychart"
dataProvider="{netPrByQtrData}"
showDataTips="true"
height="250"
width="450" type="stacked">
<mx:horizontalAxis>
<mx:CategoryAxis categoryField="quarter"/>
</mx:horizontalAxis>
<mx:series>
<mx:ColumnSeries
yField="bottom"
xField="quarter"
displayName="Bottom" >
</mx:ColumnSeries>
<mx:ColumnSeries
yField="middle"
xField="quarter"
displayName="Middle" >
</mx:ColumnSeries>
<mx:ColumnSeries
yField="top"
xField="quarter"
displayName="Top" >
</mx:ColumnSeries>
<mx:LineSeries
yField="netPromoter"
xField="quarter"
displayName="Net Promoter" >
</mx:LineSeries>
</mx:series>
</mx:ColumnChart>
<mx:Legend dataProvider="{mychart}"
direction="horizontal"/>
</mx:Panel>
</mx:Application>
If I omit type="stacked" from
<mx:ColumnChart id="mychart"
dataProvider="{netPrByQtrData}"
showDataTips="true"
height="250"
width="450" type="stacked">
The code will work perfectly..But unfortunately its not a
Stacked Chart...
Is there any solution for this....Please reply your valuable
suggestions ASAP.....
Thanks in Advance..
Subin

Hello,
In Flex Builder 4 and Above.
For composite charts with Multiple column series and line series,
Remove type = “stacked” property from Column Chart.
and Add columnset like.
<mx:series>
    <mx:ColumnSet type="stacked">
       <mx:ColumnSeries yField="aSales" displayName="A Sales" />
       <mx:ColumnSeries yField="bSales" displayName="B Sales" />
    </mx:ColumnSet>
    <mx:LineSeries yField="total" displayName="Total Sales"/>
</mx:series>
Cheers,
SaM.

Column chart solid color stroke with fillfunction

Hi,
in a column chart I am using the fillfunction,
to customize the color of each column.
Now I need to modify,
for each column also the solid color stroke,
but I can't figure how can I do that.
Some one can help me ?
Thanks a lot
Jody

Depending on what you are trying to do, you need to either:
create an Array with the colors
[Bindable]
     private var warmColorsArray:Array = new Array(
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     [Bindable]
     private var coolColorsArray:Array = new Array(
        new SolidColor(0x3333CC, .5),
        new SolidColor(0x3366CC, .5),
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And then just add that array to the fill parameter
<mx:ColumnSeries
                xField="month"
                yField="profit"
                displayName="Profit"
                fills="{warmColorsArray}">
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Or, you need use the fillFunction to set each item individually.
Here is the results from an example I did, in order how to do it. And I put a post on my blog explaining what I did.

Column chart with null data items

I have a Column Chart with an ArrayCollection data provider.
The data will sometimes have missing items in some "rows'. For
example, it might look like this where the second object has no
"Male" property:
public var myData:ArrayCollection = new ArrayCollection([
{School: "Priorford", All: 95, Male: 92, Female: 98},
{School: "Giffnock", All: 87, Female: 89},
{School: "Hastings", All: 80, Male: 78, Female: 82}
Sometimes I get the following error:
TypeError: Error #1009: Cannot access a property or method of
a null object
reference.
at mx.charts.chartClasses::NumericAxis/mapCache()
I'm assuming the error is because of missing data items, but
I'm not 100% sure. Some data sets with missing items will display
with no error. I can't see a pattern to those that don't.
-- I can't produce the error when using a "static" data
source set in the Flex app itself (such as the example above).
These always display correctly, even with missing items.
-- In the problem case, the source data comes from a MySQL
database through a PHP script that is called with a Flex
httpService. The returned data is parsed in Flex, and put into the
ArrayCollection. I was suspecting that the returned data was flawed
in some way, but the same ArrayCollection displays correctly in a
DataGrid. The problem is only with the Chart.
-- I can work round the problem by adding the missing
properties and setting them to an empty value. But I don't think I
should have to do this.
Has anyone seen this problem, or know of any obvious thing I
might be doing wrong.

Thanks Arthur.
Your first suggestion is effectively what I'm doing as a
workaround. But it is a bit of a pain to have to account for this
each time when displaying a chart. It's a particular problem when
you don't know in advance what "categories" might be returned by
the data and that have to be charted.
My biggest concern is that this looks like a bug, and the
fact that it seems to occur intermittently is a bit worrying. (I
also know that eight out of ten reported "bugs" are user error,
which is why I was wondering if anyone else had experienced this.)
About your second suggestion, I think the interpolateValues
property only applies to lineSeries.

Column chart error

Hi All
In my column chart I am having following error due to my axisRenderer but I
am unable to find out the root cause of error.
Error
TypeError: Error #1009: Cannot access a property or method of a null object
reference.
            at
mx.charts::AxisRenderer/calcStaggeredSpacing()[C:\Work\flex\dmv_automation\p
rojects\datavisualisation\src\mx\charts\AxisRenderer.as:2195]
            at
mx.charts::AxisRenderer/calcRotationAndSpacing()[C:\Work\flex\dmv_automation
\projects\datavisualisation\src\mx\charts\AxisRenderer.as:1586]
            at
mx.charts::AxisRenderer/adjustGutters()[C:\Work\flex\dmv_automation\projects
\datavisualisation\src\mx\charts\AxisRenderer.as:1326]
            at mx.charts::AxisRenderer/set
gutters()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\char
ts\AxisRenderer.as:798]
            at
mx.charts.chartClasses::CartesianChart/updateAxisLayout()[C:\Work\flex\dmv_a
utomation\projects\datavisualisation\src\mx\charts\chartClasses\CartesianCha
rt.as
:2028]
            at
mx.charts.chartClasses::CartesianChart/updateDisplayList()[C:\Work\flex\dmv_
automation\projects\datavisualisation\src\mx\charts\chartClasses\CartesianCh
art.a
s:1355]
            at mx.core::UIComponent/validateDisplayList()
            at mx.managers::LayoutManager/validateDisplayList()
            at mx.managers::LayoutManager/doPhasedInstantiation()
            at mx.managers::LayoutManager/validateNow()
            at mx.effects.effectClasses::TweenEffectInstance/onTweenEnd()
            at mx.effects.effectClasses::ResizeInstance/onTweenEnd()
            at mx.effects::Tween/endTween()
            at
mx.effects::Tween/http://www.adobe.com/2006/flex/mx/internal::doInterval()
            at mx.effects::Tween$/timerHandler()
            at flash.utils::Timer/_timerDispatch()
            at flash.utils::Timer/tick()
my Axis renderer
<mx:horizontalAxis>
                  <mx:CategoryAxis id="myAxis"
                                           categoryField="X"   />
            </mx:horizontalAxis>
             <mx:horizontalAxisRenderers>
                  <mx:AxisRenderer
labelRotation="{Application.application.xAxisLabelRotator.value}"
                                           axis=""/>
             </mx:horizontalAxisRenderers>
Any help is highly appreciable.
With thanks and warm regards,
Varun Bajaj

This looks like the same problem I just encountered. Did you ever figure anything out?

Overlapping data when more data column chart SSRS

Hi guys,
In my ssrs report the column chart display is not good when more number of datas are viewed.How to overcum this issue
I searched more on this issue no good solution found.
I attached screenshot for this report,
any suggestions pls
Thanks,
R.B

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http://www.bidn.com/blogs/ChrisAlbrektson/bidn-blog/1832/ssrs-adjust-bar-chart-width
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Thanks,
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Null object reference error in Axis Renderer in Case of Stacked Column Chart

We are trying to display a Flex Column chart (when stacked ) with single value in DataProvider but we used to get following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.charts::AxisRenderer/calcStaggeredSpacing()[C:\Work\flex\dmv_automation\projects\datav isualisation\src\mx\charts\AxisRenderer.as:2195]
at mx.charts::AxisRenderer/calcRotationAndSpacing()[C:\Work\flex\dmv_automation\projects\dat avisualisation\src\mx\charts\AxisRenderer.as:1586]
at mx.charts::AxisRenderer/adjustGutters()[C:\Work\flex\dmv_automation\projects\datavisualis ation\src\mx\charts\AxisRenderer.as:1326]
at mx.charts::AxisRenderer/set gutters()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\AxisRender er.as:798]
at mx.charts.chartClasses::CartesianChart/updateAxisLayout()[C:\Work\flex\dmv_automation\pro jects\datavisualisation\src\mx\charts\chartClasses\CartesianChart.as:2028]
at mx.charts.chartClasses::CartesianChart/updateDisplayList()[C:\Work\flex\dmv_automation\pr ojects\datavisualisation\src\mx\charts\chartClasses\CartesianChart.as:1355]
at mx.core::UIComponent/validateDisplayList()[C:\autobuild\galaga\frameworks\projects\framew ork\src\mx\core\UIComponent.as:6351]
at mx.managers::LayoutManager/validateDisplayList()[C:\autobuild\galaga\frameworks\projects\ framework\src\mx\managers\LayoutManager.as:622]
at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild\galaga\frameworks\project s\framework\src\mx\managers\LayoutManager.as:695]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild\galaga\frameworks\projects\frame work\src\mx\core\UIComponent.as:8733]
at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild\galaga\frameworks\projects\framew ork\src\mx\core\UIComponent.as:8673]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
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I solved the issue by getting rid of the creationCompleteHandler event handlers for the KPI charts. But, since I am just days into flex development, I would be indebted if someone could explain to me why that was creating problems.

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I am facing a strange problem in designing a column chart. I have a page where i have two column charts. The data providr for both the charts is same. I have an xml with three categories of values, and each chart uses two of these with one of them being common and they are actually sorted based on one of those values. The problem here is that one chart shows proper values while the other (though shows proper values) it doesnt render it properly in the sense that the height of the columns and the value of that particular column are not consistent. What could be the issue????

It's necessary to discard the white spaces.
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document.ignoreWhite = true;
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Erick Souza | ericksouza.com

Add Total to Stacked Column Chart on the top and another important thing is the data are from SharePoint site

the same with the following description from another question:
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values for each part of the stack on a stacked column, but I want to be display the total.
For Example: If I have stacked column on chart with a value of 10 for the 1st stack, 20 for the 2nd stack,
and 20 again for the 3rd stack - I want to display 50 (the SUM total) as the data label on top of the entire column..."
and a solution for this would create a new column named SUM(category group), this can be done with data source from SQL server, but my data is from SharePoint site list. its query seems can't be changed which means I can't add a SUM column.
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Column chart dataprovider null object refrerence #1009

hi
i have one column chart whose data provider initially is set to httpservice's lastresult . i have created one function to load chart with new data on one button click. when i click that button the chart should be loaded with new data so i have written in click function of button.... chart.dataprovider=gettdata.lastresult.people.person;..... but when i run the code and click the button i gives the error
TypeError: Error #1009: Cannot access a property or method of a null object reference...... but when i again click dismiss button of error and click the button to get new data the chart gets loaded with new data........
i am using flexlib's mdIWINDOW as parent of column chart... please help

Thanks Arthur.
Your first suggestion is effectively what I'm doing as a
workaround. But it is a bit of a pain to have to account for this
each time when displaying a chart. It's a particular problem when
you don't know in advance what "categories" might be returned by
the data and that have to be charted.
My biggest concern is that this looks like a bug, and the
fact that it seems to occur intermittently is a bit worrying. (I
also know that eight out of ten reported "bugs" are user error,
which is why I was wondering if anyone else had experienced this.)
About your second suggestion, I think the interpolateValues
property only applies to lineSeries.

Flex Column Chart X-axis Label position

Hello,
I have a Column Chart and am wanting to align the X-axis labels on top of each Column. Is there a way to achieve this?
Can we change the label's default position? I know there is a "rotation" property which rotates the labels but i want to change the label postion.
Any help/pointers is highly appreciated.
Thanks.

Been diging throught he charts source to figure out if there is a way of doing what I wanted, and appartntly there is (well - for the most part). For anyone else interested there is a property called alignLabelsToInterval for the LinearAxis class. This is not documented but it is a public variable - in the code ( http://opensource.adobe.com/svn/opensource/flex/sdk/trunk/frameworks/projects/charts/src/m x/charts/LinearAxis.as ):
* @private
public function get alignLabelsToInterval():Boolean
return _alignLabelsToInterval;
* @private
public function set alignLabelsToInterval(value:Boolean):void
if (value != _alignLabelsToInterval)
_alignLabelsToInterval = value;
invalidateCache();
dispatchEvent(new Event("mappingChange"));
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Setting this parameter to false allows the base label to stay on the origin of the chart. Then you need to compute a suitable interval for the axis to get the labels you want.
Phew!
Allan

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pls
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                                localSeries.setStyle("showDataEffect", ChangeEffect);
                                // Back up the current series on the chart.
                                var currentSeries:Array = chart.series;
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                                currentSeries.push(localSeries);
                                //Add Array of series to columnset
                                colSet.series.push(localSeries);
                                   //assign columnset to chart
                                chart.series = [colSet];
After some more research, I put a breakpoint inside ColumnChart.as in the following function:
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        if(series is ColumnSeries)
            var columnSeries:ColumnSeries = ColumnSeries(series);
            var position:String = columnSeries.labelPos;
            if(position == "inside" || position == "outside" || position == "none")
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        else if(series is ColumnSet)
            var setSeries:Array /* of Series */ = ColumnSet(series).series;
            for (var i:int = 0; i < setSeries.length; i++)
                getSeriesLabelPos(setSeries[i]);
the following line: var position:String = columnSeries.labelPos;
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chart appearance is controlled by xml files located in
{cfroot}\charting\styles. the file for bar charts is
default.xml
you will want to:
1) copy thisfile to your site's root or some other folder
(i.e. same
folder that the page displaying your chart is in)
2) edit the file and change isHideOverlapped attribute of
labelStyle
property for xAxis to "false"
3) point the STYLE attribute of your cfchart tag to this new
file.
hth
Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com/

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I want to show two line charts with a column chart. Everything goes on the screen fine, except the two line charts origination point always starts at the same point despite the numbers being different. For example, the ls1 might read 280, 190, 180 and the ls2 is 175, 188, 177 but both origination points start at 280. The other two datapoints should also be close together but they have a substantial gap of about 50 between them. Obviosuly I want to have two separate lines. I have also tried moving the line series below the first lines series with no success.
<mx:ColumnChart dataTipFunction="formatDataTip"id="
myChart" dataProvider="
{FCVData}" showDataTips="
true"selectionMode="
single"change="event.stopImmediatePropagation()"
width="
100%" height="95%" y="50">

<mx:verticalAxis>
<mx:LinearAxis title="mytitle" labelFunction="defineVerticalLabel"id="
v1"baseAtZero="
true" />
</mx:verticalAxis>
<mx:horizontalAxis>
<mx:CategoryAxis dataProvider="
{MYData}" categoryField="
YEAR"
/>
</mx:horizontalAxis>
<mx:series>
<mx:ColumnSeries id="
pb"color="
#FFFFFF"xField="
YEAR" yField="B
UDGET" displayName="
Budget"hideDataEffect="
zoomOut" showDataEffect="
zoomIn">
<mx:fill>
<mx:SolidColor color="{colColor1}"/>
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</mx:ColumnSeries>
<mx:LineSeries id="ls2" dataProvider="
{MYData}" yField="
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Actual"
>
<mx:itemRenderer>
<mx:Component>
<mx:DiamondItemRenderer/>
</mx:Component>
</mx:itemRenderer>
<mx:lineStroke>
<mx:Stroke color="
{lineColor2}" weight="
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/>
</mx:lineStroke>
<mx:verticalAxis>
<mx:LinearAxis id="v3" baseAtZero="true"/>
</mx:verticalAxis>
</mx:LineSeries>
<mx:ColumnSeries
id="
asytd"color="
#FFFFFF"xField="
YEAR" yField="
SPEND" displayName="
Spend "hideDataEffect="
zoomOut" showDataEffect="
zoomIn">
<mx:fill>
<mx:SolidColor color="{colColor2}"/>
</mx:fill>
</mx:ColumnSeries>
<mx:LineSeries id="ls1" dataProvider="
{MYData}" yField="
PLAN"displayName="
Plan"
>
<mx:itemRenderer>
<mx:Component>
<mx:CrossItemRenderer/>
</mx:Component>
</mx:itemRenderer>
<mx:lineStroke>
<mx:Stroke color="
{lineColor1}" weight="
5" alpha="
.5"
/>
</mx:lineStroke>
<mx:verticalAxis>
<mx:LinearAxis title="title" id="v2" baseAtZero="true"/>
</mx:verticalAxis>
</mx:LineSeries>
</mx:series>
<mx:verticalAxisRenderers>
<mx:AxisRenderer placement="left" axis="{v1}"/>
<mx:AxisRenderer placement="right" axis="{v2}"/>
<mx:AxisRenderer visible="false" placement="right" axis="{v3}"/>
</mx:verticalAxisRenderers>
</mx:ColumnChart>

Hi,
Still Trying:
I've now got this code to function:
var i:int = 0;
                for each (var cat:* in event.result.chart.categories.category){
                    //mx.controls.Alert.show(cat.label);
                    var z:int = 0;
                    for each (var valuee:* in event.result.chart.dataset){
                        //mx.controls.Alert.show(event.result.chart.dataset[z].seriesName);
                        //mx.controls.Alert.show(valuee.sete[i].value);
                        z++;
                    i++
which works fine, how can I get in into Array to make a dataset for the flex charts?
Thanks,
Elad

In column Chart when Y values are grater than y linear axis maximum it doesnt show the Bar

Hi Guys,
In column Chart when Y values are grater than y linear axis maximum it doesnt show the Bar.But i want show the bar upto the max limit of y linear axis without changing the max limit.
Consider following example:
Y values are 80 90 200 300
and following are the output :
Left:When i am not setting maximum property of linear axis.
Right :When i am setting maximum property of linear axis to 200.
In right 4th bar is not visible bcoz value for that bar is 300 which is excedding maxium.But i want the 4th bar to appear same as 3rd bar.
How i can do this?
Thanks in advance.

Are you going to show the bar going past the maximum value?
If not, then you should change the Y value when entered into the array to the maximum value allowed. i.e.
if(itemYValue > maxAllowedValue) {
itemYValue = maxAllowedValue;
Where maxAllowedValue is a variable you set on the application to control the maximum value for the chart.
This is assuming that you are loading the values into an Array before updating the chart dataprovider with that array.

Strok property in column chart

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