1 Dimensional Chart In Flex?
Apr 15, 2011
I want a bubble chart that just shows items along a straight line. So I'd like the horizontal axis to essentially not exist. I have it working right now with the yField assigned to a field that happens to always be '1' on my test dataset.. but this is not going to be the case in general, so I need some way to restrict the y-axis... preferably without needing to go back to my model and parse through all my data to add a dummy value '1' on each entry.
Unfortunately setting min/max values just cuts off anything above or below rather than restricting entries.
I set computedMin and Maximum (no idea what they are and the docs don't really explain) but it didn't seem to restrict the data in any way.
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Mar 3, 2011
I'm trying to prevent a default chart item roll over highlight in a Spark column chart.If you look at any of the chart examples on this page , when you roll over any of the chart series items, they turn a darkened shade of their original colour. This is what I want to prevent.
So far I have had no luck with using the itemRollOverColor property, as this only allows you to set it to one specific colour for the whole chart (my app has several different coloured series on the chart at once). Also, trying to leverage the itemRollOver event (with preventDefault() etc) hasn't worked either.
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Jan 10, 2011
I'm trying to make chart which is combination of bar and line chart using Flex Charting API . Here x axis would be common and y axis would be different. note that y axis got different range of value one is % and other is amount. Any one got idea how to make this chart. Here line chart would be staked on top of bar chart . The line chart and never over laid or drawn on top of bar chart.
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Mar 2, 2011
Is it possible to develop chart in flash (eg. bar chart, pie chart)?
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May 5, 2011
I am currently playing around with flex, I have C++ background, so I am not used to AS3.The problem is in the main*.mxml file I have fx:script block and I try to define a multidimensional array like that:
public var Board:Array = new Array(25);
I use a function to initialize the 2d-array:
public function initBoard():void {
var i:int;
var j:int;[code]....
This function gets called later on in the main loop to init and reset the "board" why doesn't it work. The only difference to the AS3 documentation is that it gets done in a function.
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Sep 14, 2009
How can I Create an animated Bar Chart or Line Chart type of component in flash programmatically, which should depends upon an incoming XML data, the chart should have the basic criteria like, Chart Label, Item Tooltips, background grids (without using any image). There also needs an ability to change the data which should reflect the chart as well.
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Jan 13, 2012
My group is working on a Flex/AS3 scientific web application that is data intensive. Luckily the only plots involved are line charts. However, each line chart may have multiple traces (up to 24), and each trace may contain up to 2000 points. The user will need to zoom in and out and interact with the data (e.g. data tips, etc.).
The response I'm getting from developers is that's a lot of data to render in a plot in Flash. For reasons beyond the scope of this post, we can't sample the data to reduce the size (this has already been done and nature of the data prevents further sampling).
Rendering speed is critical for this app. What kind of rendering speed should I expect the Flex 4 line chart component to provide for a given number of points (e.g. 1 second to render 1000 points?)
Are there products available that handle plotting large data sets better, which can be incorporated in Flex (I've seen FusionCharts and ZingCharts online but have no idea how they compare with Flex's components)? Of those, which are easy to develop with while still providing a lot of flexibility in look and feel?
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Jan 17, 2010
Flex charts, like AreaChart, have wonderful built-in support for displaying data "tool tips" when a user hovers over a point supplied in the data of a graph. You can hover over any of the bar graph examples on this page for a demonstration. I have a graph situation where I optionally draw in some dots as reference points on CartesianDataCanvases supplied to my AreaChart through it's <mx:annotationElements> and <mx:backgroundElements> tags.
I would like to have the same hover data-tip functionality that the AreaChart has, but applied to these dots. I realize that I am just drawing on canvas, and that no actual dataProvider supports these dots, but if there was a way to supply the CartesianDataCanvas with an array of data values or something to that effect,
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Apr 21, 2010
I have a dynamic ArrayCollection that will contain a unknown number of objects of type MyObj:
class MyObj
{
type:String
[code]........
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Dec 23, 2010
I am in a situation where user gets the cars data from the database based on the selection and displays it in datagrid like below ( for example)
Company Model Year No
GM Chevy 2010 10
GM Chevy 2009 5
GM Pontiac 2010 12
Honda Civic 2009 12
and there will be a link next to datagrid to get Pie chart based on the data displays in the data grid . The pie graph should display grouping by company and the count . I mean for the above example that should give with two pie items , one for GM showing the number of vehicles ( in this case 3 ) and Honda showing the number of vehicles ( in this case 1 ).
I thought of getting it from the database by querying and grouping it .But here the problem is after getting the data above in the datagrid user can able to filter at client end ( By year or model ) and can say get graph . This time that should only display the graph for the data visible in Datagrid .Grouping on database for every operation is becoming expensive. Since we have already data available at client end , is there any way to group it at client ..?
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Apr 30, 2010
Is it possible to restrict flex bar chart y-axis count?I have a very big name coming in my y-axis and i want to reduce or restrict it to 5 characters and on rollover i want to display it in full.
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Oct 6, 2010
We get data from multiple feeds and data may or may not exist for a certain date. o, for points that have no data we send NaN.
[Code]...
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Jun 28, 2011
When using a Flex chart, the y-axis is drawn as a thick (about 8px) grey line. Is it possible to change this to be just a thin line like the x-axis?
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Aug 4, 2011
I've created a line chart in flex and it works like expected. Now, I would like to add shading to the background for specific information. For example, this chart - [URL], shows a shaded background for recessions. How would I mimic this shading in a Flex linechart?
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Jun 30, 2011
In Flex how can I set a custom name (string) for the X axis and Y axis titles of a chart?
(Horizontal Axis and Vertical Axis)
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Jun 22, 2009
I would like to be able to specify the placement of a legend for a linechart. Currently, it continues to appear to the right of the chart. I have tried playing with the width/height of the chart to no avail... Putting the legend before the linechart in the mxml causes it to appear to the left. I can't seem to get it appear at the bottom though. I can't seem to find any good examples for this. They don't seem to specify anything but the legend usually shows up below the chart, I can't seem to do it.
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Jul 10, 2009
I'm using a lineseries chart, but it gets fairly slow to re-render when I add a new point when the total # of points is ~1200 points. Granted, this is running on a fairly slow PC (~600 MHz). Reading the Flex documentation on how to speed up rendering (turning off dropshadows, turning off filterData, etc...) doesnt seem to help. I bound my chart to an ArrayCollection (rather than the array I used before which I manually updated) and it doesnt seem to be any faster. Adobe's documentation seems to have me believe that the Chart looks only at what changed since the last time it was updated, but i'm only adding one point!
If their info is correct, why does it take significantly longer (5 seconds) to update one point when I have ~1200 points then when I only have 2 points (instantaneous)? FYI - When I add a new point to my ArrayCollection, I have to do a "AC.refresh()" to get the DataBinding to pick up the new data.
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Jul 28, 2009
How to add a watermark to a charting component in flex? Maybe to a Line Chart or just simple to a canvas.
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Nov 3, 2009
how to create organisation chart in flex using xml
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Dec 29, 2009
I have created a Bar chart(having total 4 bars), wherein there is a gap between these bars. how to remove this gap between the bars as there is no inbuild property available...
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Apr 6, 2010
When I customized the ColumnChart in Flex by overrided updateDisplayList function, colors in legend no longer display. As you will see in the below picture:url...
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May 19, 2010
I am trying to create a bar char in action 3 script. But for some reason I am getting 2 y-axis and no x axis.
Can some one help spot the error. I have said "placement " bottom. The chart creation method is "getBarChartData", this method when invoked creates a barchart and adds it to a canvas. This section is visible completely and can be called on a button click.
[Code]...
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Jul 1, 2010
In flex, how to add a label on a chart? I need to display some thing on the chart.
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Aug 5, 2010
Is there any way to force Flex to draw empty PieChart when all data in the PieSeries equals 0. The result I'm getting now is just a blank space in the place where my chart is supposed to be.
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Aug 15, 2010
XML Data to plot:
<?xml version="1.0" encoding="utf-8" ?>
<spearkerslist>
<speakers langid="afb" countryid="SA" countryalpha3id="SAU">200000</speakers>
<speakers langid="acw" countryid="SA" countryalpha3id="SAU">6000000</speakers>
[code]....
The above data I need to plot to a Bar chart, which I tried with code below and not working
I need to plot "Langid" on y-axis and bar length based on the value in speakers tag.
<mx:Script>
<![CDATA[
private var languagelist:XML = new XML(); //Variable where the XML is stored.
]]>
[code]....
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Oct 19, 2010
Is anyone know how to adding fixed gridlines chart in flex, for example: I have a vertical axis which has a minimum value 0 and the maximum value 100 but I only want to display gridlines on values 30 and 70.
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Nov 22, 2010
Here is the updated code:
private function myFillFunction(element:ChartItem, index:Number, item:Object,
fieldName:String):IFill {
var c:SolidColor = new SolidColor(0x00CC00);
[code].....
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Apr 10, 2011
<mx:LineSeries form="curve" displayName="BG" yField="Value" xField="DateTime">
<mx:itemRenderer>
<fx:Component>
[code].....
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Jun 27, 2011
I have a flex chart that I'm trying to build via actionscript dynamically. For test purposes I came up with the following data structure and code:
Bindable]
public var columnDat:Array=
[{signalID:"SCL", point2:100},
[code].....
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Nov 17, 2010
I want to do a line chart example in flash cs3 or in flex. Actually my requirement is getting the data from external file ie xml and with that i want to display a line chart with some time interval just like stock exchange charts for example.I have to do this either in flex or in flash cs3. i dont have any ideas how to proceed
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