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.
View 1 RepliesI want to display the same data in a chart and a data grid. I want to use the same data provider for both of them to reduce the amount of SQL queries.How do I transform the database structure into the chart structure and into the table structure using ActionScript?*
Database structure in JSON format:
[
{key:, year:, value:},
{key:, year:, value:}
]
Data provider structure required by a chart:
[
{series1:, series2:, year:},
{series1:, series2:, year:}
]
Data provider structure required by data grid:
[
{key:, year2000:, year2001:, ...},
{key:, year2000:, year2001:, ...}
]
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?
I have something like this xml data
<data>
<result month="Jan-04">
<employee id="1">
[code].....
I need to display price of item for every date in the month. The chart can be Bar chart or plot chart.
Question: Suppose there is no data available for 01/15/2010 then, Is there a way to display (01/15/2010) on x axis but no (bar or plot point) corresponding y axis point ?
i.e. there will be a empty space between 2 bars or plot points.
Currently i am using 0 , But 0 is a valid value.
Let me know if such a display is possible.
In Flex, how do I create a summary(say total of various domains) from the data provider and display in chart? Say this is my dataprovider.. I want to display the total estimate of each territory as a slice in piechart
private var dpFlat:ArrayCollection = new ArrayCollection([
{Region:"Southwest", Territory:"Arizona",
Territory_Rep:"Barbara Jennings", Actual:38865, Estimate:40000}, [code].....
I am wondering how will I proceed with the following requirement. I need to create a line chart of business data of the last 8 quarters. It is easy, but the requirement is that, there should not be a connection between last year's Q4 and this years Q1. In effect, using the same array collection i need to split the line chart so that it looks like two different lines on the same chart. How to proceed with it.
View 1 RepliesI have a Flex line chart where I allow the user to change the y axis ranges. When a data point falls outside the ranges, the chart drops the line segments on either side of the out of range point leaving a gap in the data line. I'm currently using the data function to clamp the values out of range to the y axis min/max, but this displays misleading data.
View 1 Repliesis it possible to create an item renderer for the data labels of a Flex Pie Chart?i know it is possible to change the formatting of the String using the label function. But i need more control of the way the data label appears.The background of the label needs to be a a specific color based on the data.
View 1 RepliesI want a data tip to appear when mouse pointer is over any point of the chart, not only when pointer is directly over a data point.
View 1 RepliesI have a list of 99 item (something like a phone book) and I will like to sort them in different method. Part of the 99 item might be empty, so the requirement is to move the empty field behind the sorted data in every sorting behavior, here the code we have so far:
[Code]...
Is there a way to draw a line on a graph (or at least get the position) on specific date?
I have a graph where X is Date data, I want to draw a line with a text on each Year and each 3 months as reference, not part of the graph series.
I have created a line chart and another datagrid.based on dataitem clicked nthe chart should be changed. For example I have datagrid for stocks with 3 stocks GOOGL,Yahoo and ADBE .On clicking upon the GOOGL the google data should be loaded in to line chart.
View 1 RepliesI have 2 Y-axis on the chart and I am trying to use annotationElement's localToData to get the data points associated with a Point on the chart.
The annotation Element is able to return a set of values for the point ( 1 Y - data, 1 -x data), But it is returning the values against one axis and not the other.
Is there a way to associate the annotation element with a specific axis ?
I have data grid that measures the height according to the rows it has, but i need to disappear/ make invisible when i have no data, so the header will not just appear alone.
View 1 Repliesi would be glad if anyone can answer this.
i have an actionscript class as follows:
package
{
[code].....
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.
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.
View 1 RepliesIs it possible to develop chart in flash (eg. bar chart, pie chart)?
View 1 RepliesI have been looking for a simple way to chart some data dynamically but to no avail. I have been using LineChart from Astra but I cannot change its data dynamically.
I think this very crude example should work, but it doesn't:
Code:
// The flash simply consists of a LineChart called "chart" ...
import com.yahoo.astra.fl.charts.*;
import com.yahoo.astra.fl.charts.series.LineSeries;
[Code]....
How would one go about reverse engineering a page such as the this one to work out where the data being used to create the chart comes from?
View 1 RepliesIs it possible to create a bar chart with dynamic data in AS2 or AS3??? If so, can anyone point in the direction of a good tutorial?
View 3 RepliesI need to create a flash chart that would take data dynamicaly as in this link [URL]..
View 2 RepliesI am having an issue with ColdFusion's CFChart tag. I have a couple graphs that do not display properly. For a horizontal bar chart, when attempting to display 50 or more chart data items, the graph's bar labels stop plotting, but keeps plotting the bars themselves once it gets to bar number 50. I noticed making the chart height larger makes the issue worse as well. If i go from 1000px pixels to 2000px, it stopped plotting labels even sooner. The query that populates the chart items do not return blank label names either. See the screen below, the labels should keep plotting after "7 to 1".
I am running on ColdFusion 8 Developer Edition. Is this a possible limitation for ColdFusion's native charting capabilities? Or should I consider checking out Flex Charting instead?
<cfset hideZeroData = "25">
<cfparam name="paramID" default="25">
<cfset ecfData = QueryNew("ecfName,cumValue")>
[Code]....
Is it possible to create a data driven movieclip for the Pie Chart in Flash.
View 3 RepliesHow 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.
View 1 RepliesFlex 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,
I have a dynamic ArrayCollection that will contain a unknown number of objects of type MyObj:
class MyObj
{
type:String
[code]........
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 ..?
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.
View 1 Replies