package range_charts.extended_series
{
import mx.charts.HitData;
import mx.charts.chartClasses.CartesianTransform;
import mx.charts.series.LineSeries;
import mx.charts.series.items.LineSeriesItem;
import mx.graphics.IStroke;
import mx.graphics.LinearGradientStroke;
import mx.graphics.Stroke;
public class CustomLineSeries extends LineSeries
{
override public function
findDataPoints(x:Number,y:Number,sensitivity:Number):Array
{
// esg, 8/7/06: if your mouse is over a series when it gets added
and displayed for the first time, this can get called
// before updateData, and before and render data is constructed. The
right long term fix is to make sure a stubbed out
// render data is _always_ present, but that's a little disruptive
right now.
if (interactive == false || !renderData)
return [];
var pr:Number = getStyle("radius");
var minDist2:Number = pr + sensitivity;
minDist2 *= minDist2;
var minItem:LineSeriesItem = null;
var pr2:Number = pr * pr;
var len:int = renderData.filteredCache.length;
if (len == 0)
return [];
if(sortOnXField == true)
{
var low:Number = 0;
var high:Number = len;
var cur:Number = Math.floor((low+high)/2);
var bFirstIsNaN:Boolean = isNaN(renderData.filteredCache[0]);
while (true)
{
var v:LineSeriesItem = renderData.filteredCache[cur];
if (!isNaN(v.yFilter) && !isNaN(v.xFilter))
{
//var dist:Number = (v.x - x)*(v.x - x) + (v.y -
y)*(v.y -y);
var dist:Number = (v.x - x)*(v.x - x) ;
if (dist <= minDist2)
{
minDist2 = dist;
minItem = v;
}
}
if (v.x < x || (isNaN(v.x) && bFirstIsNaN))
{
low = cur;
cur = Math.floor((low + high)/2);
if (cur == low)
break;
}
else
{
high = cur;
cur = Math.floor((low + high)/2);
if (cur == high)
break;
}
}
}
else
{
var i:uint;
for (i=0;i<len;i++)
{
v = renderData.filteredCache[i];
if (!isNaN(v.yFilter) && !isNaN(v.xFilter))
{
//dist = (v.x - x)*(v.x - x) + (v.y - y)*(v.y -y);
dist = (v.x - x)*(v.x - x) ;
if (dist <= minDist2)
{
minDist2 = dist;
minItem = v;
}
}
}
}
if (minItem)
{
var hd:HitData = new
HitData(createDataID(minItem.index),Math.sqrt(minDist2),minItem.x,minItem.y,minItem);
var istroke:IStroke = getStyle("lineStroke");
if (istroke is Stroke)
hd.contextColor = Stroke(istroke).color;
else if (istroke is LinearGradientStroke)
{
var gb:LinearGradientStroke = LinearGradientStroke(istroke);
if (gb.entries.length > 0)
hd.contextColor = gb.entries[0].color;
}
hd.dataTipFunction = formatDataTip;
return [ hd ];
}
return [];
}
private function formatDataTip(hd:HitData):String
{
var dt:String = "";
var n:String = displayName;
if (n && n != "")
dt += "<b>" + n + "</b><BR/>";
var xName:String =
dataTransform.getAxis(CartesianTransform.HORIZONTAL_AXIS).displayName;
if (xName != "")
dt += "<i>" + xName+ ":</i> ";
dt +=
dataTransform.getAxis(CartesianTransform.HORIZONTAL_AXIS).formatForScreen(
LineSeriesItem(hd.chartItem).xValue) + "\n";
var yName:String =
dataTransform.getAxis(CartesianTransform.VERTICAL_AXIS).displayName;
if (yName != "")
dt += "<i>" + yName + ":</i> ";
dt +=
dataTransform.getAxis(CartesianTransform.VERTICAL_AXIS).formatForScreen(
LineSeriesItem(hd.chartItem).yValue) + "\n";
return dt;
}
}
}
<custom_series:CustomLineSeries id="baseSeries" name="Reading Value"
xField="readingDate" yField="reading" displayName="Reading Value"
stroke="{new Stroke(0xFF0000, 0)}"
fill="{new SolidColor(0xFF0000, 0.6)}" lineStroke="{new
Stroke(0xFF0000, 1)}" form="curve" interpolateValues="false"
lineSegmentRenderer="mx.charts.renderers.LineRenderer"
radius="2"
/>
On Fri, Nov 21, 2008 at 1:48 PM, Sefi Ninio <[EMAIL PROTECTED]> wrote:
> Hi Brendan,
>
> Could you maybe paste your implementation of the extending class?
>
> Thanks,
> Sefi
>
> On Fri, Nov 21, 2008 at 8:41 PM, Sefi Ninio <[EMAIL PROTECTED]> wrote:
>
>> Hi Brendan
>>
>> Thanks for the reply, I'll give it a try.
>>
>> Sefi
>>
>>
>> On Fri, Nov 21, 2008 at 6:34 PM, Brendan Meutzner <[EMAIL PROTECTED]>wrote:
>>
>>> Claude Hussenet has come up with a solution for this. Here's the past
>>> post.
>>>
>>> http://tech.groups.yahoo.com/group/flexcoders/message/90045
>>>
>>> I've used and it works great.
>>>
>>>
>>> Brendan
>>>
>>>
>>>
>>> On Fri, Nov 21, 2008 at 4:56 AM, Sefi Ninio <[EMAIL PROTECTED]>wrote:
>>>
>>>> Hey,
>>>>
>>>> I have a chart set up and using dataTipFunction to format the datatips.
>>>> It works great.
>>>> However, what I'd really like, is to display the datatips for all the
>>>> series for the current x axis value the mouse pointer is over (and only
>>>> those).
>>>> Example: if the mouse pointer is over x value 10, and I have 3 line
>>>> series in that chart, then all 3 points correlating to x value 10 will have
>>>> their datatips visible.
>>>>
>>>> There are a few issues with this:
>>>> 1. I don't have an easy way to translate mouse pointer location on mouse
>>>> over to the relevant x axis value.
>>>> 2. Once I (hopefully) get the x value, I'd also have to have all y
>>>> values for the series (relatively simple).
>>>> 3. If I get here, I'll have to think of a way to cause the points to
>>>> show their datatip and ofcourse clear all previous open datatips...
>>>>
>>>> any ideas on either of those points?
>>>>
>>>> Thanks,
>>>> Sefi
>>>>
>>>>
>>>
>>>
>>> --
>>> Brendan Meutzner
>>> http://www.meutzner.com/blog/
>>>
>>
>>
>
>
--
Brendan Meutzner
http://www.meutzner.com/blog/
