Actionscript 3 :: Flex - Possible To Have Flex DataTips On Canvas Rather Than Chart Objects
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,
I have a line chart with a column chart as a secondary series. When I roll over the line, the datatips appear. However, if I move the mouse to a spot where a column appears while still on the line, the data tip item appears for the line AND the column. How do I get it so that I only show datatips for the line but not the column?
I want to have a canvas with some "floating" property. Basically when I add child to it, the child should float at the top. When I add the second child, it should float above the previous one. For example the canvas width is 100, and I have two VideoDisplay with width 100 and height 75.
canvas.addChild(video0); // Or canvas.addChildAt(video0, 0); // video0 should be at x=0 and y=0 canvas.addChild(video1); // Or canvas.addChildAt(video1, 1); // video1 should be at x=0 and y=0, while video0 x=0 and y=75
I have creating a distributed note taking application in flex, it basically is a notepad I can keep in my desktop tray. When I add notes and goes back to a server and saves it in a database.
To am struggling to design the application correctly, I want to have a Syncing service that polls the webserver for changes and updates an Array of Note objects. The problem is that my note corresponds mxml component, aka SingleNote component. There are four different cases when being, a. a note is updated from the server poll, in that case I want to singlenote to update the settings b. a note is added to the array from the server, in that case a new SingleNote needs to be created c. a SingleNote is added from client, in that case a Note is added to array, and sent back to server d. a SingleNote is change from client, in that case the Note is updated in the array and sent back to server
DataTips in flex charting are a poorly documented and little-understood feature.There are three parts, the DataTip (by default a box with text inside), the DataTipTarget (default bulls-eye circle over the series' point), and the Callout (the line from dataTipTarget to DataTip box).How are these three elements created/drawn and how can they be customized?
I want to dynamically add different items to thumbContent canvas and use scroller canvas to scroll. I see than the height of thumbContent bigger than 7977 it truncate from scrolling. So - I see the scroller canvas with empty space on top. Then I scroll to bottom - I see the content of thumbContent and at bottom scrolling I see empty space too.
I assume I need to override the mouse over and mouse off event so that they don't do anything and then trigger the mouse over event for each column on the graph.
I'm trying to skin a canvas with an image (which is essentially a custom border for the canvas). I've been trying the backgroundImage style as well as the borderSkin style. I can't get the image to scale to the full size of the canvas though. I was wondering what the best way to go about this is.[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.
I wrote a function to override y FLEX LineChart's datatips because the default datatips were ugly and rather boring.I finally set the style I wanted but am now having some problems removing un-necessary tags from being displayed in the custom datatips.For example, the datatips now display things like this:
"<b>Humidity</b></BR>2010-07-05T00:15:00"
I can always perform a "Replace()" to remove those break and bold HTML tags, but that seems really un-necessary and anti-development.I am using this to set the dataTip's label text:
var hd:HitData = value as HitData; var item:LineSeriesItem = hd.chartItem as LineSeriesItem; _xAxisText = String(hd.displayText + ' ' + item.xValue);
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 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.
I'm trying to write some code to an animated images of squares on a Flex Canvas There's something wrong with my code below because it becomes progressively slowerI assume I'm supposed to clear the old squares or something.What am I doing wrong below?:
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?
I have flex 4, zend & php. I am trying to generate a chart w/ 5 yrs of data & then let the user (without making another call to the server) get a 1 yr chart w/ the same data. (In other words, the 1 yr's worth of data is a subset of the 5 yrs). I can get the initial 5 yr chart but when I try to apply a filter, as below, I get no data. What am I doing wrong?I have the following code:
I'm developing an engine to generate components.I been wanting to get my xml script that read and create a component to be load into 'content' canvas. I not sure how do I get the addChild work correctly as in 'content'.addChild instead of the one shown below:[code]
The basis for the chat window is a canvas. I've got that showing, but how do I make it scroll up? I want to clip the window so only the last 15 lines are shown.[code]...
My code above works absolutely fine, until i resize my browser window to a size below 800px width. When the browser window is make of lesser width than 800px, the canvas with background color #A8A8A8 is on the right of the window, but the problem is, when I move the scroll bar, the canvas should remain on the right of the window. Which does not happen, and that is what my problem is.
How can I solve this issue. What should I do to keep my canvas be on the right=0 all the time.
i am required to zoom a canvas through Hslider. The problem is after zooming the canvas i cannot scroll to the extreme left and top of the canvas i.e some part of left and top canvas are not visible. i cannot find the reason. The source code for the example is given below.
Is there a way in Flex by which a disabled canvas looks exactly the same as an enabled canvas? I haven't been able to make sense of disabledOverLayAlpha and disabledColor properties for a Canvas component.
a .fla is 500 x 300. Inside, content moves OUT of the 500 x 300 stage so that it appears like it hides or moves off of the screen. .fla complied... loaded into Flex via SWFLoader:
