#import "Controller.h"

#import <CorePlot/CorePlot.h>

@interface Controller()

@property (nonatomic, readwrite, strong, nullable) IBOutlet CPTGraphHostingView *hostView;

@property (nonatomic, readwrite, strong, nonnull) CPTXYGraph *graph;

@property (nonatomic, readwrite, strong, nonnull) NSArray<NSDictionary *> *plotData;

#pragma mark -

@implementation Controller

@synthesize hostView;

@synthesize graph;

@synthesize plotData;

-(void)awakeFromNib

{

[super awakeFromNib];

// If you make sure your dates are calculated at noon, you shouldn't have to

// worry about daylight savings. If you use midnight, you will have to adjust

// for daylight savings time.

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

NSDate *refDate = [formatter dateFromString:@"12:00 Oct 29, 2009"];

NSTimeInterval oneDay = 24 * 60 * 60;

// Create graph from theme

CPTXYGraph *newGraph = [[CPTXYGraph alloc] initWithFrame:CGRectZero];

CPTTheme *theme = [CPTTheme themeNamed:kCPTDarkGradientTheme];

[newGraph applyTheme:theme];

self.graph = newGraph;

self.hostView.hostedGraph = newGraph;

// Setup scatter plot space

CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)newGraph.defaultPlotSpace;

NSTimeInterval xLow = 0.0;

plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:@(xLow) length:@(oneDay * 3.0)];

plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:@1.0 length:@3.0];

// Axes

CPTXYAxisSet *axisSet = (CPTXYAxisSet *)newGraph.axisSet;

CPTXYAxis *x = axisSet.xAxis;

x.majorIntervalLength = @(oneDay);

x.orthogonalPosition = @2.0;

x.minorTicksPerInterval = 3;

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

dateFormatter.dateStyle = kCFDateFormatterShortStyle;

CPTTimeFormatter *myDateFormatter = [[CPTTimeFormatter alloc] initWithDateFormatter:dateFormatter];

myDateFormatter.referenceDate = refDate;

x.labelFormatter = myDateFormatter;

NSDateFormatter *timeFormatter = [[NSDateFormatter alloc] init];

timeFormatter.timeStyle = kCFDateFormatterShortStyle;

CPTTimeFormatter *myTimeFormatter = [[CPTTimeFormatter alloc] initWithDateFormatter:timeFormatter];

myTimeFormatter.referenceDate = refDate;

x.minorTickLabelFormatter = myTimeFormatter;

CPTXYAxis *y = axisSet.yAxis;

y.majorIntervalLength = @0.5;

y.minorTicksPerInterval = 5;

y.orthogonalPosition = @(0.5 * oneDay);

// Create a plot that uses the data source method

CPTScatterPlot *dataSourceLinePlot = [[CPTScatterPlot alloc] init];

dataSourceLinePlot.identifier = @"Date Plot";

CPTMutableLineStyle *lineStyle = [dataSourceLinePlot.dataLineStyle mutableCopy];

lineStyle.lineWidth = 3.;

lineStyle.lineColor = [CPTColor greenColor];

dataSourceLinePlot.dataLineStyle = lineStyle;

dataSourceLinePlot.dataSource = self;

[newGraph addPlot:dataSourceLinePlot];

// Add some data

NSMutableArray<NSDictionary *> *newData = [NSMutableArray array];

for ( NSUInteger i = 0; i < 7; i++ ) {

NSTimeInterval xVal = oneDay * i * 0.5;

double yVal = 1.2 * arc4random() / (double)UINT32_MAX + 1.2;

[newData addObject:

@{ @(CPTScatterPlotFieldX): @(xVal),

@(CPTScatterPlotFieldY): @(yVal) }

];

}

self.plotData = newData;

}

#pragma mark -

#pragma mark Plot Data Source Methods

-(NSUInteger)numberOfRecordsForPlot:(nonnull CPTPlot *__unused)plot

{

return self.plotData.count;

}

-(nullable id)numberForPlot:(nonnull CPTPlot *__unused)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index

{

return self.plotData[index][@(fieldEnum)];

}