adding Scatter Chart code to viewController

** scatter chart programmatically
** adding header to header files

@@ -17,3 +17,4 @@
 #import "PNCircleChart.h"
 #import "PNChartDelegate.h"
 #import "PNPieChart.h"
+#import "PNScatterChart.h"

@@ -7,6 +7,7 @@
 //
 
 #import "PCChartsTableViewController.h"
+#define ARC4RANDOM_MAX 0x100000000
 
 @implementation PCChartsTableViewController
 
@@ -40,7 +41,77 @@
         //Add pie chart
 
         viewController.title = @"Pie Chart";
+    } else if ([segue.identifier isEqualToString:@"scatterChart"])
+    {
+        //Add scatter chart
+        UILabel * scatterChartLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 90, SCREEN_WIDTH, 30)];
+        scatterChartLabel.text = @"Scatter Chart";
+        scatterChartLabel.textColor = PNFreshGreen;
+        scatterChartLabel.font = [UIFont fontWithName:@"Avenir-Medium" size:23.0];
+        scatterChartLabel.textAlignment = NSTextAlignmentCenter;
+        
+        PNScatterChart *scatterChart = [[PNScatterChart alloc] initWithFrame:CGRectMake(0, 0, 280, 200)];
+        [scatterChart setAxisXWithMinimumValue:20 andMaxValue:100 toTicks:6];
+        [scatterChart setAxisYWithMinimumValue:30 andMaxValue:50 toTicks:5];
+        
+        NSArray * data01Array = [self randomSetOfObjectsForScatterChart:scatterChart];
+        PNScatterChartData *data01 = [PNScatterChartData new];
+        data01.strokeColor = PNGreen;
+        data01.fillColor = PNFreshGreen;
+        data01.size = 2;
+        data01.itemCount = [[data01Array objectAtIndex:0] count];
+        data01.inflexionPointStyle = PNScatterChartPointStyleCircle;
+        __block NSMutableArray *XAr1 = [NSMutableArray arrayWithArray:[data01Array objectAtIndex:0]];
+        __block NSMutableArray *YAr1 = [NSMutableArray arrayWithArray:[data01Array objectAtIndex:1]];
+        data01.getData = ^(NSUInteger index) {
+            CGFloat xValue = [[XAr1 objectAtIndex:index] floatValue];
+            CGFloat yValue = [[YAr1 objectAtIndex:index] floatValue];
+            return [PNScatterChartDataItem dataItemWithX:xValue AndWithY:yValue];
+        };
+        
+        NSArray * data02Array = [self randomSetOfObjectsForScatterChart:scatterChart];
+        PNScatterChartData *data02 = [PNScatterChartData new];
+        data02.strokeColor = PNBlue;
+        data02.fillColor = PNBlue;
+        data02.size = 2;
+        data02.itemCount = [[data02Array objectAtIndex:0] count];
+        data02.inflexionPointStyle = PNScatterChartPointStyleCircle;
+        __block NSMutableArray *XAr2 = [NSMutableArray arrayWithArray:[data02Array objectAtIndex:0]];
+        __block NSMutableArray *YAr2 = [NSMutableArray arrayWithArray:[data02Array objectAtIndex:1]];
+        data02.getData = ^(NSUInteger index) {
+            CGFloat xValue = [[XAr2 objectAtIndex:index] floatValue];
+            CGFloat yValue = [[YAr2 objectAtIndex:index] floatValue];
+            return [PNScatterChartDataItem dataItemWithX:xValue AndWithY:yValue];
+        };
+        
+        [scatterChart setup];
+        scatterChart.chartData = @[data01 , data02];
+        
+        // this is for drawing line to compare
+        CGPoint start = CGPointMake(20, 35);
+        CGPoint end = CGPointMake(80, 45);
+        [scatterChart drawLineFromPoint:start ToPoint:end WithLineWith:2 AndWithColor:PNBlack];
+        
+        scatterChart.delegate = self;
+        [viewController.view addSubview:scatterChartLabel];
+        [viewController.view addSubview:scatterChart];
+        viewController.title = @"Scatter Chart";
+    }
+}
+
+/* this function is used only for creating random points */
+- (NSArray *) randomSetOfObjectsForScatterChart:(PNScatterChart *)chart{
+    NSMutableArray *array = [NSMutableArray array];
+    NSString *LabelFormat = @"%1.f";
+    NSMutableArray *XAr = [NSMutableArray array];
+    NSMutableArray *YAr = [NSMutableArray array];
+    for (int i = 0; i < 25 ; i++) {
+        [XAr addObject:[NSString stringWithFormat:LabelFormat,(((double)arc4random() / ARC4RANDOM_MAX) * (chart.AxisX_maxValue - chart.AxisX_minValue) + chart.AxisX_minValue)]];
+        [YAr addObject:[NSString stringWithFormat:LabelFormat,(((double)arc4random() / ARC4RANDOM_MAX) * (chart.AxisY_maxValue - chart.AxisY_minValue) + chart.AxisY_minValue)]];
     }
+    [array addObject:XAr];
+    [array addObject:YAr];
+    return (NSArray*) array;
 }