Scatter chart margin bug potential fix

demo-angularIO/src/app/scatterchart-demo/scatterchart-demo.component.ts

@@ -76,6 +76,7 @@ export class ScatterChartDemoComponent {
         bottomAxis.shouldExtendTicksAcrossChart = true;
 
         let selectedData: DataPoint[] = [];
+        baseChart.margin = 5;
         selectionChart.datalist( selectedData );
         me.chart.addChart( baseChart );
         me.chart.addChart( selectionChart );
@@ -100,7 +101,7 @@ export class ScatterChartDemoComponent {
 
                 }
             },
-            3
+            5
         );
         let zoom = new ZoomBehavior();
         // zoom.limitZoom( axis, 0.5, 1.5 );

gist-charts/source/implementations/charts/scatterChartImplementation.class.ts

@@ -53,7 +53,8 @@ export class ScatterChartImplementation extends BaseChartImplementation {
 
     public getDataAtCoord( px: number, py: number, closeEnough: number ): DataPoint[] {
         let activePoints: Array<Point> = [];
-
+        px += this.chart.margin;
+        py += this.chart.margin;
         let xi = px - closeEnough, xo = px + closeEnough, yi = py - closeEnough, yo = py + closeEnough;
         this.quadTree.visit(( node: any, x0, y0, x1, y1 ) => {
             if ( !node.length ) {