Can this be done?
--- In flexcoders@yahoogroups.com, "polonycjunk" <[EMAIL PROTECTED]> wrote:
>
> Hi Ely,
>
> Sorry if I confused you. If I let flex handle the min/max value, I am
> not getting the time axis I'm looking. Say for example, the current
> time is 4:01:00. Consider a collection with size = 60. It consists
> of data for the last 60 seconds. If I let flex handle it, the h-axis
> will only show 4:00:00 to 4:01:00. But what I really want is for the
> h-axis to show the time from 4:00:00(min) to 4:03:00 (max)
> (T+3minutes). As more data arrives each second, I want the min and
> max to change to reflect the times that are in the collection.
>
> Once I assign a min/max to the chart, is there a way to update it
> according to new values in the dataProvider?
>
> The only way I was able to make it change was if I created a button
> which sets a new Min/Max. I would need to consistently click on the
> button to create the moving window of (T + 3).
>
>
> --- In flexcoders@yahoogroups.com, "Ely Greenfield" <egreenfi@> wrote:
> >
> >
> >
> > I'm a little confused by your question. If you're explicitly
assigning a
> > min/max value, you're telling the chart you don't want it to generate
> > automatic min/max values. If you're asking how to remove your
> > previously assigned min/max and ask it to restart automatically
> > generating min/max values, just set the min/max of the axis to
> > undefined.
> >
> > Ely.
> >
> >
> > ________________________________
> >
> > From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
> > Behalf Of polonycjunk
> > Sent: Wednesday, December 06, 2006 9:42 AM
> > To: flexcoders@yahoogroups.com
> > Subject: [flexcoders] Dynamic Min/Max for chart axis not updating
> > automatically.
> >
> >
> >
> > Once a minimum/maximum value is assigned to the DateTimeAxis, how can
> > i get a realtime chart to update the min/max values depending on its
> > dataProvider and keep it updating?
> >
> > Here is some code to illustrate:
> > Note: dataProvider is an ArrayCollection of size 100. if size = 100,
> > the date at index 0 is removed and the next date is added.
> >
> > private var _minimum:Date=null;
> > [Bindable]
> > public function get minimum():Date{
> > if(this.dataProvider == null){
> > _minimum = new Date();
> > _minimum.setHours(9,0,0,0);
> > }else{
> > _minimum = this.dataProvider.getItemAt(0).date;
> >
> > }
> > return _minimum;
> > }
> >
> > private var _maximum:Date=null;
> > [Bindable]
> > public function get maximum():Date{
> > if(this.dataProvider == null){
> > _maximum = new Date();
> > _maximum.setHours(16,0,0,0);
> > }else{
> > if(_zoomLevel == "seconds"){
> > _maximum.setHours(_minimum.hours, _minimum.minutes +3,
> > _minimum.seconds,_minimum.milliseconds); //I want my maximum to
> > change whenever my minimum changes.
> > }
> > }
> > return _maximum;
> > }
> >
> > MXML code:
> >
> > <mx:horizontalAxis>
> > <mx:DateTimeAxis id="hTimeAxis" labelUnits="minutes"
> > dataUnits="minutes" interval="20" displayLocalTime="true"
> > alignLabelsToUnits="true" minimum="{minimum}" maximum="{maximum}" />
> > </mx:horizontalAxis>
> >
>
