Radar Chart

A radar chart is a graphical method of displaying multivariate data in
the form of a two-dimensional chart of three or more quantitative
variables represented on axes starting from the same point.

@@ -18,3 +18,5 @@
 #import "PNChartDelegate.h"
 #import "PNPieChart.h"
 #import "PNScatterChart.h"
+#import "PNRadarChart.h"
+#import "PNRadarChartDataItem.h"

+//
+//  PNRadarChart.h
+//  PNChartDemo
+//
+//  Created by Lei on 15/7/1.
+//  Copyright (c) 2015年 kevinzhow. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "PNGenericChart.h"
+#import "PNRadarChartDataItem.h"
+
+#define MAXCIRCLE 20
+
+typedef NS_ENUM(NSUInteger, PNRadarChartLabelStyle) {
+    PNRadarChartLabelStyleCircle = 0,
+    PNRadarChartLabelStyleHorizontal,
+    PNRadarChartLabelStyleHidden,
+};
+
+@interface PNRadarChart : PNGenericChart
+
+-(id)initWithFrame:(CGRect)frame  items:(NSArray *)items valueDivider:(CGFloat)unitValue;
+/** 
+ *Draws the chart in an animated fashion.
+ */
+-(void)strokeChart;
+
+/** Array of `RadarChartDataItem` objects, one for each corner. */
+@property(nonatomic)NSArray *chartData;
+/** The unit of this chart ,default is 1 */
+@property(nonatomic)CGFloat valueDivider;
+/** The maximum for the range of values to display on the chart */
+@property(nonatomic)CGFloat maxValue;
+/** Default is gray. */
+@property(nonatomic)UIColor *webColor;
+/** Default is green , with an alpha of 0.7 */
+@property(nonatomic)UIColor *plotColor;
+/** Default is black */
+@property(nonatomic)UIColor *fontColor;
+/** Default is orange */
+@property(nonatomic)UIColor *graduationColor;
+/** Default is 15 */
+@property(nonatomic)CGFloat fontSize;
+/** Controls the labels display style that around chart */
+@property(nonatomic,assign)PNRadarChartLabelStyle labelStyle;
+/** Tap the label will display detail value ,default is YES. */
+@property(nonatomic,assign)BOOL isLabelTouchable;
+/** is show graduation on the chart ,default is NO. */
+@property(nonatomic,assign)BOOL isShowGraduation;
+
+@end

+//
+//  PNRadarChart.m
+//  PNChartDemo
+//
+//  Created by Lei on 15/7/1.
+//  Copyright (c) 2015年 kevinzhow. All rights reserved.
+//
+
+#import "PNRadarChart.h"
+
+@interface PNRadarChart()
+
+@property(nonatomic)CGFloat centerX;
+@property(nonatomic)CGFloat centerY;
+@property(nonatomic)NSMutableArray *pointsToWebArrayArray;
+@property(nonatomic)NSMutableArray *pointsToPlotArray;
+@property(nonatomic)UILabel *detailLabel;
+@property(nonatomic)CGFloat lengthUnit;
+@property(nonatomic)CAShapeLayer *chartPlot;
+
+@end
+
+@implementation PNRadarChart
+
+-(id)initWithFrame:(CGRect)frame items:(NSArray *)items valueDivider:(CGFloat)unitValue{
+    self=[super initWithFrame:frame];
+    if (self) {
+        self.backgroundColor = [UIColor clearColor];
+        self.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
+
+        //Public iVar
+        if ([items count]< 3) {
+            NSLog( @"At least three items!");
+            NSArray *defaultArray = @[[PNRadarChartDataItem dataItemWithValue:0 description:@"Default"],
+                                      [PNRadarChartDataItem dataItemWithValue:0 description:@"Default"],
+                                      [PNRadarChartDataItem dataItemWithValue:0 description:@"Default"],
+                                      ];
+           defaultArray = [defaultArray arrayByAddingObjectsFromArray:items];
+            _chartData = [NSArray arrayWithArray:defaultArray];
+        }else{
+            _chartData = [NSArray arrayWithArray:items];
+        }
+        _valueDivider = unitValue;
+        _maxValue = 1;
+        _webColor = [UIColor grayColor];
+        _plotColor = [UIColor colorWithRed:.4 green:.8 blue:.4 alpha:.7];
+        _fontColor = [UIColor blackColor];
+        _graduationColor = [UIColor orangeColor];
+        _fontSize = 15;
+        _labelStyle = PNRadarChartLabelStyleHorizontal;
+        _isLabelTouchable = YES;
+        _isShowGraduation = NO;
+        
+        //Private iVar
+        _centerX = frame.size.width/2;
+        _centerY = frame.size.height/2;
+        _pointsToWebArrayArray = [NSMutableArray array];
+        _pointsToPlotArray = [NSMutableArray array];
+        _lengthUnit = 0;
+        _chartPlot = [CAShapeLayer layer];
+        _chartPlot.lineCap = kCALineCapButt;
+        _chartPlot.fillColor = _plotColor.CGColor;
+        _chartPlot.lineWidth = 1.0;
+        [self.layer addSublayer:_chartPlot];
+         //init detailLabel
+        _detailLabel = [[UILabel alloc] init];
+        _detailLabel.backgroundColor = [UIColor colorWithRed:.9 green:.9 blue:.1 alpha:.9];
+        _detailLabel.textAlignment = NSTextAlignmentCenter;
+        _detailLabel.textColor = [UIColor colorWithWhite:1 alpha:1];
+        _detailLabel.font = [UIFont systemFontOfSize:15];
+        [_detailLabel setHidden:YES];
+        [self addSubview:_detailLabel];
+        
+        [self strokeChart];
+    }
+    return self;
+}
+
+#pragma mark - main
+-(void)calculateChartPoints{
+    [_pointsToPlotArray removeAllObjects];
+    [_pointsToWebArrayArray removeAllObjects];
+    
+    //init Descriptions , Values and Angles.
+    NSMutableArray *descriptions = [NSMutableArray array];
+    NSMutableArray *values = [NSMutableArray array];
+    NSMutableArray *angles = [NSMutableArray array];
+    for (int i=0;i<_chartData.count;i++) {
+        PNRadarChartDataItem *item = (PNRadarChartDataItem *)[_chartData objectAtIndex:i];
+        [descriptions addObject:item.textDescription];
+        [values addObject:[NSNumber numberWithFloat:item.value]];
+        CGFloat angleValue = (float)i/(float)[_chartData count]*2*M_PI;
+        [angles addObject:[NSNumber numberWithFloat:angleValue]];
+    }
+    
+    //calculate all the lengths
+    _maxValue = [self getMaxValueFromArray:values];
+    CGFloat margin = 0;
+    if (_labelStyle==PNRadarChartLabelStyleCircle) {
+        margin = MIN(_centerX , _centerY)*3/10;
+    }else if (_labelStyle==PNRadarChartLabelStyleHorizontal) {
+        margin = [self getMaxWidthLabelFromArray:descriptions withFontSize:_fontSize];
+    }
+    CGFloat maxLength = ceil(MIN(_centerX, _centerY) - margin);
+    int plotCircles = (_maxValue/_valueDivider);
+    if (plotCircles > MAXCIRCLE) {
+        NSLog(@"Circle number is higher than max");
+        plotCircles = MAXCIRCLE;
+        _valueDivider = _maxValue/plotCircles;
+    }
+    _lengthUnit = maxLength/plotCircles;
+    NSArray *lengthArray = [self getLengthArrayWithCircleNum:(int)plotCircles];
+
+    //get all the points and plot
+    for (NSNumber *lengthNumber in lengthArray) {
+        CGFloat length = [lengthNumber floatValue];
+        [_pointsToWebArrayArray addObject:[self getWebPointWithLength:length angleArray:angles]];
+    }
+    int section = 0;
+    for (id value in values) {
+        CGFloat valueFloat = [value floatValue];
+        if (valueFloat>_maxValue) {
+            NSString *reason = [NSString stringWithFormat:@"Value number is higher than max -value: %f - maxValue: %f",valueFloat,_maxValue];
+            @throw [NSException exceptionWithName:NSInvalidArgumentException reason:reason userInfo:nil];
+            return;
+        }
+        
+        CGFloat length = valueFloat/_maxValue*maxLength;
+        CGFloat angle = [[angles objectAtIndex:section] floatValue];
+        CGFloat x = _centerX +length*cos(angle);
+        CGFloat y = _centerY +length*sin(angle);
+        NSValue* point = [NSValue valueWithCGPoint:CGPointMake(x, y)];
+        [_pointsToPlotArray addObject:point];
+        section++;
+    }
+    //set the labels
+    [self drawLabelWithMaxLength:maxLength labelArray:descriptions angleArray:angles];
+    
+ }
+#pragma mark - Draw
+
+- (void)drawRect:(CGRect)rect {
+    // Drawing code
+    CGContextRef context = UIGraphicsGetCurrentContext();
+    CGContextClearRect(context, rect);
+    int section = 0;
+    //circles
+    for(NSArray *pointArray in _pointsToWebArrayArray){
+        //plot backgound
+        CGContextRef graphContext = UIGraphicsGetCurrentContext();
+        CGContextBeginPath(graphContext);
+        CGPoint beginPoint = [[pointArray objectAtIndex:0] CGPointValue];
+        CGContextMoveToPoint(graphContext, beginPoint.x, beginPoint.y);
+        for(NSValue* pointValue in pointArray){
+            CGPoint point = [pointValue CGPointValue];
+            CGContextAddLineToPoint(graphContext, point.x, point.y);
+        }
+        CGContextAddLineToPoint(graphContext, beginPoint.x, beginPoint.y);
+        CGContextSetStrokeColorWithColor(graphContext, _webColor.CGColor);
+        CGContextStrokePath(graphContext);
+        
+    }
+    //cuts
+    NSArray *largestPointArray = [_pointsToWebArrayArray lastObject];
+    for (NSValue *pointValue in largestPointArray){
+        section++;
+        if (section==1&&_isShowGraduation)continue;
+        
+        CGContextRef graphContext = UIGraphicsGetCurrentContext();
+        CGContextBeginPath(graphContext);
+        CGContextMoveToPoint(graphContext, _centerX, _centerY);
+        CGPoint point = [pointValue CGPointValue];
+        CGContextAddLineToPoint(graphContext, point.x, point.y);
+        CGContextSetStrokeColorWithColor(graphContext, _webColor.CGColor);
+        CGContextStrokePath(graphContext);
+    }
+    
+    
+}
+
+-(void)strokeChart{
+    
+    [self calculateChartPoints];
+    [self setNeedsDisplay];
+    [_detailLabel setHidden:YES];
+    
+    //Draw plot
+    [_chartPlot removeAllAnimations];
+    UIBezierPath *plotline = [UIBezierPath bezierPath];
+    CGPoint beginPoint = [[_pointsToPlotArray objectAtIndex:0] CGPointValue];
+    [plotline moveToPoint:CGPointMake(beginPoint.x, beginPoint.y)];
+    for(NSValue *pointValue in _pointsToPlotArray){
+        CGPoint point = [pointValue CGPointValue];
+        [plotline addLineToPoint:CGPointMake(point.x ,point.y)];
+        
+    }
+    [plotline setLineWidth:1];
+    [plotline setLineCapStyle:kCGLineCapButt];
+    
+    _chartPlot.path = plotline.CGPath;
+    
+    CABasicAnimation *animateScale = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
+    animateScale.fromValue = [NSNumber numberWithFloat:0.f];
+    animateScale.toValue = [NSNumber numberWithFloat:1.0f];
+    
+    CABasicAnimation *animateMove = [CABasicAnimation animationWithKeyPath:@"position"];
+    animateMove.fromValue = [NSValue valueWithCGPoint:CGPointMake(_centerX, _centerY)];
+    animateMove.toValue = [NSValue valueWithCGPoint:CGPointMake(0, 0)];
+    
+    CABasicAnimation *animateAlpha = [CABasicAnimation animationWithKeyPath:@"opacity"];
+    animateAlpha.fromValue = [NSNumber numberWithFloat:0.f];
+    
+    CAAnimationGroup *aniGroup = [CAAnimationGroup animation];
+    aniGroup.duration = 1.f;
+    aniGroup.repeatCount = 1;
+    aniGroup.animations = [NSArray arrayWithObjects:animateScale,animateMove,animateAlpha, nil];
+    aniGroup.removedOnCompletion = YES;
+    
+    [_chartPlot addAnimation:aniGroup forKey:nil];
+    
+    [self showGraduation];
+}
+
+#pragma mark - Helper
+
+-(void)drawLabelWithMaxLength:(CGFloat)maxLength labelArray:(NSArray *)labelArray angleArray:(NSArray *)angleArray{
+    //set labels
+    int labelTag = 121;
+    while (true) {
+        UIView *label = [self viewWithTag:labelTag];
+        if(!label)break;
+        [label removeFromSuperview];
+    }
+    int section = 0;
+    CGFloat labelLength = maxLength + maxLength/10;
+    
+    for (NSString *labelString in labelArray) {
+        CGFloat angle = [[angleArray objectAtIndex:section] floatValue];
+        CGFloat x = _centerX + labelLength *cos(angle);
+        CGFloat y = _centerY + labelLength *sin(angle);
+        
+        UILabel *label = [[UILabel alloc] init] ;
+        label.backgroundColor = [UIColor clearColor];
+        label.font = [UIFont systemFontOfSize:_fontSize];
+        label.text = labelString;
+        label.tag = labelTag;
+        CGSize detailSize = [labelString sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_fontSize]}];
+        
+        switch (_labelStyle) {
+            case PNRadarChartLabelStyleCircle:
+                label.frame = CGRectMake(x-5*_fontSize/2, y-_fontSize/2, 5*_fontSize, _fontSize);
+                label.transform = CGAffineTransformMakeRotation(((float)section/[labelArray count])*(2*M_PI)+M_PI_2);
+                label.textAlignment = NSTextAlignmentCenter;
+                
+                break;
+            case PNRadarChartLabelStyleHorizontal:
+                if (x<_centerX) {
+                    label.frame = CGRectMake(x-detailSize.width, y-detailSize.height/2, detailSize.width, detailSize.height);
+                    label.textAlignment = NSTextAlignmentRight;
+                }else{
+                    label.frame = CGRectMake(x, y-detailSize.height/2, detailSize.width , detailSize.height);
+                    label.textAlignment = NSTextAlignmentLeft;
+                }
+                break;
+            case PNRadarChartLabelStyleHidden:
+                [label setHidden:YES];
+                break;
+            default:
+                break;
+        }
+        [label sizeToFit];
+        
+        label.userInteractionEnabled = YES;
+        UITapGestureRecognizer *tapLabelGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapLabel:)];
+        [label addGestureRecognizer:tapLabelGesture];
+        [self addSubview:label];
+        
+        section ++;
+    }
+    
+}
+
+-(void)tapLabel:(UITapGestureRecognizer *)recognizer{
+    UILabel *label=(UILabel*)recognizer.view;
+    _detailLabel.frame = CGRectMake(label.frame.origin.x, label.frame.origin.y-30, 50, 25);
+    for (PNRadarChartDataItem *item in _chartData) {
+        if ([label.text isEqualToString:item.textDescription]) {
+            _detailLabel.text =  [NSString stringWithFormat:@"%.2f", item.value];
+            break;
+        }
+    }
+    [_detailLabel setHidden:NO];
+    
+}
+
+-(void)showGraduation{
+    int labelTag = 112;
+    while (true) {
+        UIView *label = [self viewWithTag:labelTag];
+        if(!label)break;
+        [label removeFromSuperview];
+    }
+    int section = 0;
+    for (NSArray *pointsArray in _pointsToWebArrayArray) {
+        section++;
+        CGPoint labelPoint = [[pointsArray objectAtIndex:0] CGPointValue];
+        UILabel *graduationLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelPoint.x-_lengthUnit, labelPoint.y-_lengthUnit*5/8, _lengthUnit*5/8, _lengthUnit)];
+        graduationLabel.adjustsFontSizeToFitWidth = YES;
+        graduationLabel.tag = labelTag;
+        graduationLabel.font = [UIFont systemFontOfSize:ceil(_lengthUnit)];
+        graduationLabel.textColor = [UIColor orangeColor];
+        graduationLabel.text = [NSString stringWithFormat:@"%.0f",_valueDivider*section];
+        [self addSubview:graduationLabel];
+        if (_isShowGraduation) {
+            [graduationLabel setHidden:NO];
+        }else{
+            [graduationLabel setHidden:YES];}
+    }
+
+}
+
+-(NSArray *)getWebPointWithLength:(CGFloat)length angleArray:(NSArray *)angleArray{
+    NSMutableArray *pointArray = [NSMutableArray array];
+    for (NSNumber *angleNumber in angleArray) {
+        CGFloat angle = [angleNumber floatValue];
+        CGFloat x = _centerX + length*cos(angle);
+        CGFloat y = _centerY + length*sin(angle);
+        [pointArray addObject:[NSValue valueWithCGPoint:CGPointMake(x,y)]];
+    }
+    return pointArray;
+    
+}
+
+-(NSArray *)getLengthArrayWithCircleNum:(int)plotCircles{
+    NSMutableArray *lengthArray = [NSMutableArray array];
+    CGFloat length = 0;
+    for (int i = 0; i < plotCircles; i++) {
+        length += _lengthUnit;
+        [lengthArray addObject:[NSNumber numberWithFloat:length]];
+    }
+    return lengthArray;
+}
+
+-(CGFloat)getMaxWidthLabelFromArray:(NSArray *)keyArray withFontSize:(CGFloat)size{
+    CGFloat maxWidth = 0;
+    for (NSString *str in keyArray) {
+        CGSize detailSize = [str sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_fontSize]}];
+        maxWidth = MAX(maxWidth, detailSize.width);
+    }
+    return maxWidth;
+}
+
+-(CGFloat)getMaxValueFromArray:(NSArray *)valueArray{
+    CGFloat max = _maxValue;
+    for (NSNumber *valueNum in valueArray) {
+        CGFloat valueFloat = [valueNum floatValue];
+        max = MAX(valueFloat, max);
+    }
+    return ceil(max);
+}
+
+
+
+@end

+//
+//  PNRadarChartDataItem.h
+//  PNChartDemo
+//
+//  Created by Lei on 15/7/1.
+//  Copyright (c) 2015年 kevinzhow. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface PNRadarChartDataItem : NSObject
+
++ (instancetype)dataItemWithValue:(CGFloat)value
+                      description:(NSString *)description;
+
+@property (nonatomic) CGFloat   value;
+@property (nonatomic,copy) NSString *textDescription;
+
+@end

+//
+//  PNRadarChartDataItem.m
+//  PNChartDemo
+//
+//  Created by Lei on 15/7/1.
+//  Copyright (c) 2015年 kevinzhow. All rights reserved.
+//
+
+#import "PNRadarChartDataItem.h"
+
+@implementation PNRadarChartDataItem
+
++ (instancetype)dataItemWithValue:(CGFloat)value
+                      description:(NSString *)description {
+    PNRadarChartDataItem *item = [PNRadarChartDataItem new];
+    item.value = value;
+    item.textDescription = description;
+    return item;
+}
+
+- (void)setValue:(CGFloat)value{
+    if (value<0) {
+        _value = 0;
+        NSLog(@"Value value can not be negative");
+    }
+    _value = value;
+}
+
+@end

@@ -35,6 +35,8 @@
 		9FE15DF8190BB014004129F5 /* PNChartLabel.m in Sources */ = {isa = PBXBuildFile; fileRef = 9FE15DE9190BB014004129F5 /* PNChartLabel.m */; };
 		9FE15DFA190BB014004129F5 /* PNColor.m in Sources */ = {isa = PBXBuildFile; fileRef = 9FE15DEE190BB014004129F5 /* PNColor.m */; };
 		A9C75FA61A9F1DA900A54638 /* PNGenericChart.m in Sources */ = {isa = PBXBuildFile; fileRef = A9C75FA51A9F1DA900A54638 /* PNGenericChart.m */; };
+		ABD79D021B43700800A7C300 /* PNRadarChart.m in Sources */ = {isa = PBXBuildFile; fileRef = ABD79D011B43700800A7C300 /* PNRadarChart.m */; };
+		ABD79D051B43CF8000A7C300 /* PNRadarChartDataItem.m in Sources */ = {isa = PBXBuildFile; fileRef = ABD79D041B43CF8000A7C300 /* PNRadarChartDataItem.m */; };
 		E2C3ED5773A1409C8367CC70 /* libPods.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 3BA6321352024B1FBA0158B0 /* libPods.a */; };
 /* End PBXBuildFile section */
 
@@ -103,6 +105,10 @@
 		9FE15DEE190BB014004129F5 /* PNColor.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PNColor.m; sourceTree = "<group>"; };
 		A9C75FA41A9F1DA900A54638 /* PNGenericChart.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PNGenericChart.h; sourceTree = "<group>"; };
 		A9C75FA51A9F1DA900A54638 /* PNGenericChart.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PNGenericChart.m; sourceTree = "<group>"; };
+		ABD79D001B43700800A7C300 /* PNRadarChart.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PNRadarChart.h; sourceTree = "<group>"; };
+		ABD79D011B43700800A7C300 /* PNRadarChart.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PNRadarChart.m; sourceTree = "<group>"; };
+		ABD79D031B43CF8000A7C300 /* PNRadarChartDataItem.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PNRadarChartDataItem.h; sourceTree = "<group>"; };
+		ABD79D041B43CF8000A7C300 /* PNRadarChartDataItem.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PNRadarChartDataItem.m; sourceTree = "<group>"; };
 		B0A0D7DDAB496680487BF1E5 /* libPods-PNChartTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-PNChartTests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		EFE4F6360943ED4001072124 /* Pods.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = Pods.debug.xcconfig; path = "Pods/Target Support Files/Pods/Pods.debug.xcconfig"; sourceTree = "<group>"; };
 		FB2FFF68E5C9B426137EDD03 /* Pods-PNChartTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-PNChartTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-PNChartTests/Pods-PNChartTests.debug.xcconfig"; sourceTree = "<group>"; };
@@ -263,6 +269,10 @@
 				91177ED7198DFAC400017E27 /* PNPieChartDataItem.m */,
 				A9C75FA41A9F1DA900A54638 /* PNGenericChart.h */,
 				A9C75FA51A9F1DA900A54638 /* PNGenericChart.m */,
+				ABD79D001B43700800A7C300 /* PNRadarChart.h */,
+				ABD79D011B43700800A7C300 /* PNRadarChart.m */,
+				ABD79D031B43CF8000A7C300 /* PNRadarChartDataItem.h */,
+				ABD79D041B43CF8000A7C300 /* PNRadarChartDataItem.m */,
 			);
 			path = PNChart;
 			sourceTree = "<group>";
@@ -434,11 +444,13 @@
 			files = (
 				91177EDE198DFAC400017E27 /* PNLineChart.m in Sources */,
 				9FE15DF8190BB014004129F5 /* PNChartLabel.m in Sources */,
+				ABD79D021B43700800A7C300 /* PNRadarChart.m in Sources */,
 				91177EDC198DFAC400017E27 /* PNCircleChart.m in Sources */,
 				9FE15DFA190BB014004129F5 /* PNColor.m in Sources */,
 				91177ED8198DFAC400017E27 /* PNBar.m in Sources */,
 				91177EE2198DFAC400017E27 /* PNLineChartDataItem.m in Sources */,
 				0AF7A8AF182AAEEF003645C4 /* PCChartViewController.m in Sources */,
+				ABD79D051B43CF8000A7C300 /* PNRadarChartDataItem.m in Sources */,
 				0A29228A1A423FB300A42BC4 /* PNScatterChartDataItem.m in Sources */,
 				A9C75FA61A9F1DA900A54638 /* PNGenericChart.m in Sources */,
 				91177EE6198DFAC400017E27 /* PNPieChartDataItem.m in Sources */,

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+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="7531" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" initialViewController="9Rt-UT-IxH">
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6247"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7520"/>
     </dependencies>
     <scenes>
         <!--PNChart-->
@@ -45,13 +45,13 @@
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                             </switch>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Percentage" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="IKu-qh-ksi">
-                                <rect key="frame" x="16" y="528" width="88" height="21"/>
+                                <rect key="frame" x="16" y="528" width="121" height="21"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Show Labels" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Ifm-a9-Wkq">
-                                <rect key="frame" x="211" y="527" width="99" height="21"/>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Show Labels" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Ifm-a9-Wkq">
+                                <rect key="frame" x="192" y="527" width="118" height="21"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                                 <nil key="highlightedColor"/>
@@ -188,6 +188,26 @@
                                             <segue destination="Tha-Wr-sPW" kind="push" identifier="scatterChart" id="V7s-JV-4Nx"/>
                                         </connections>
                                     </tableViewCell>
+                                    <tableViewCell contentMode="scaleToFill" selectionStyle="blue" accessoryType="disclosureIndicator" hidesAccessoryWhenEditing="NO" indentationLevel="1" indentationWidth="0.0" textLabel="Sjk-AS-XhW" style="IBUITableViewCellStyleDefault" id="bev-fA-J4Q">
+                                        <rect key="frame" x="0.0" y="196" width="320" height="44"/>
+                                        <autoresizingMask key="autoresizingMask"/>
+                                        <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="bev-fA-J4Q" id="nSV-Wu-TAu">
+                                            <rect key="frame" x="0.0" y="0.0" width="287" height="43"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <label opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="left" text="RadarChart" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="Sjk-AS-XhW">
+                                                    <rect key="frame" x="15" y="0.0" width="270" height="43"/>
+                                                    <autoresizingMask key="autoresizingMask"/>
+                                                    <fontDescription key="fontDescription" type="system" pointSize="18"/>
+                                                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
+                                                    <nil key="highlightedColor"/>
+                                                </label>
+                                            </subviews>
+                                        </tableViewCellContentView>
+                                        <connections>
+                                            <segue destination="Tha-Wr-sPW" kind="push" identifier="radarChart" id="4D9-t3-nzn"/>
+                                        </connections>
+                                    </tableViewCell>
                                 </cells>
                             </tableViewSection>
                         </sections>
@@ -220,6 +240,6 @@
         <simulatedScreenMetrics key="destination" type="retina4"/>
     </simulatedMetricsContainer>
     <inferredMetricsTieBreakers>
-        <segue reference="V7s-JV-4Nx"/>
+        <segue reference="pvQ-oy-a9a"/>
     </inferredMetricsTieBreakers>
 </document>

@@ -17,6 +17,7 @@
 @property (nonatomic) PNCircleChart * circleChart;
 @property (nonatomic) PNPieChart *pieChart;
 @property (nonatomic) PNScatterChart *scatterChart;
+@property (nonatomic) PNRadarChart *radarChart;
 
 @property (weak, nonatomic) IBOutlet UILabel *titleLabel;
 

@@ -206,6 +206,29 @@
         self.changeValueButton.hidden = YES;
         [self.view addSubview:self.scatterChart];
     }
+    else if ([self.title isEqualToString:@"Radar Chart"])
+    {
+        self.titleLabel.text = @"Radar Chart";
+        
+        self.leftSwitch.hidden = NO;
+        self.rightSwitch.hidden = NO;
+        self.leftLabel.hidden = NO;
+        self.rightLabel.hidden = NO;
+        self.leftLabel.text = @"Labels Style";
+        self.rightLabel.text = @"Graduation";
+        
+        NSArray *items = @[[PNRadarChartDataItem dataItemWithValue:3 description:@"Art"],
+                           [PNRadarChartDataItem dataItemWithValue:2 description:@"Math"],
+                           [PNRadarChartDataItem dataItemWithValue:8 description:@"Sports"],
+                           [PNRadarChartDataItem dataItemWithValue:5 description:@"Literature"],
+                           [PNRadarChartDataItem dataItemWithValue:4 description:@"Other"],
+                           ];
+        self.radarChart = [[PNRadarChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 300.0) items:items valueDivider:1];
+        [self.radarChart strokeChart];
+        
+        [self.view addSubview:self.radarChart];
+    }
+
 }
 
 
@@ -310,6 +333,15 @@
         }
         [self.pieChart strokeChart];
     }
+    if ([self.title isEqualToString:@"Radar Chart"]){
+        UISwitch *showLabels = (UISwitch*) sender;
+        if (showLabels.on) {
+            self.radarChart.isShowGraduation = NO;
+        }else{
+            self.radarChart.isShowGraduation = YES;
+        }
+        [self.radarChart strokeChart];
+    }
 }
 
 - (IBAction)leftSwitchChanged:(id)sender {
@@ -322,5 +354,14 @@
         }
         [self.pieChart strokeChart];
     }
+    if ([self.title isEqualToString:@"Radar Chart"]){
+        UISwitch *showRelative = (UISwitch*) sender;
+        if (showRelative.on) {
+            self.radarChart.labelStyle = PNRadarChartLabelStyleHorizontal;
+        }else{
+            self.radarChart.labelStyle = PNRadarChartLabelStyleCircle;
+        }
+        [self.radarChart strokeChart];
+    }
 }
 @end

@@ -45,6 +45,11 @@
         //Add scatter chart
         
         viewController.title = @"Scatter Chart";
+    }else if ([segue.identifier isEqualToString:@"radarChart"])
+    {
+        //Add radar chart
+        
+        viewController.title = @"Radar Chart";
     }
 }