Comments on: Scrolling and zooming chart with CategoryAxis

By: Raheel

Raheel — Sat, 10 Sep 2011 17:21:10 +0000

How i can handle disable ranges with scrolling and zooming? any body plz help me

By: the_new_mr

the_new_mr — Thu, 01 Sep 2011 12:32:53 +0000

Beautiful Iwo!

Works a charm!

I changed the component a little bit so that the user can click to zoom and ctrl+click to zoom out. I shall mail you the changes (though it’s not much).

Thanks again.

By: james

james — Sun, 15 May 2011 01:21:36 +0000

will category version of chart scroller work with flex 4?

Thanks

By: Alex

Alex — Wed, 13 Apr 2011 12:50:34 +0000

Hi, Iwo!
Thanks for great solution.
Could you please hint what is the best way to implement datetimeaxis horizontal scrolling within disabled date ranges ?

By: Matias

Matias — Thu, 27 Jan 2011 14:37:49 +0000

Hi Iwo.

You Example works fine, great work, i’m noobie en flex, so, when you do the categoryLabelFunction to use linear axis like a Category axis, if i change the id of array Data provider to my var that take data from RemoteObj Mysql DB, the application Run but don’t finish to charge, don’t see nothing, mi remote connection run fine, because i can populate a Data grid.

my data provider:

private var datos:ArrayCollection;

[Bindable]
private var datos2:Array;

private function onInit():void
{
miServicio.test_chart.send();
}

private function onResult():void
{
datos= miServicio.test_chart.lastResult;
datos2=datos.source;
dGrid.selectedIndex=0;
}

Your Function with my dataprovider Var:

public function categoryLabelFunction(labelValue:Object, previousValue:Object, axis:IAxis):String
{
var index:int = int(labelValue);

if (index >= 0 && index < datos2.length)

return datos2[index].fechacompra;
return "";
}

fechacompra is my category axis row, i tried with "datos" and "datos2" no errors, but the application doesn't run.

Thank you for your time

By: Indu

Indu — Tue, 24 Aug 2010 10:24:15 +0000

Hi,
I would like to know whether i could dynamically change the dataprovider elements.
i.e instead of – return dp[index].Month;
how can i change the Month dynamically?

By: Indu

Indu — Tue, 24 Aug 2010 10:14:45 +0000

Hi,
I would like to know whether i could dynamically change the dataprovider elements.
i.e instead of – return dp[index].Month;
how can i access the Month dynamically?

By: Bran Singstom

Bran Singstom — Sun, 18 Jul 2010 13:10:52 +0000

Now how can it been modified so that the bars doesn’t disappear when you pan at some direction like its doing now? where in the code is preventing it to be draw all the data, even if its outside the visible area?

Thanks!

By: Brian1

Brian1 — Thu, 08 Jul 2010 17:27:05 +0000

Hey , pretty cool!

But there is a problem. If you have millions value and don’t want to show everything when you zoom in and out, i mean how could we filter out values, so it doesn’t get heavy to pan or zoom?

I know there is an algorithm call Douglas_Peucker for simplify lines that can be used. But don’t know how to implement it or where..
How can we me make an function like google stockschart where it depends on the period you chose ?

Sorry my bad french

/Thanks

By: Yukti

Yukti — Wed, 23 Jun 2010 09:46:29 +0000

Hi,
I observed that when you scroll too much the line chart is compressed and the category labels skip I mean they are displayed at intervals.How can I avoid this?

Thanks and help will be appreciated