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" <[EMAIL PROTECTED]> 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> >
