`
#import "TUTSimpleScatterPlot.h"
#import "CPDConstants.h"
#import "CPDStockPriceStore.h"
@implementation TUTSimpleScatterPlot
@synthesize hostView = _hostingView;
@synthesize graph = _graph;
@synthesize graphEmpActualWeightData = _graphEmpActualWeightData;
@synthesize graphEmpGoalWeightData = _graphEmpGoalWeightData;
// Initialise the scatter plot in the provided hosting view with the provided data.
// The data array should contain NSValue objects each representing a CGPoint.
-(id)initWithHostingView:(CPTGraphHostingView *)hostingView andEmpActualWeight:(NSMutableArray *)valuesEmpActualWeight andEmpGoalWeight:(NSMutableArray *)valuesEmpGoalWeight
{
self = [super init];
if ( self != nil ) {
self.hostView = hostingView;
self.graphEmpActualWeightData = valuesEmpActualWeight;
self.graphEmpGoalWeightData = valuesEmpGoalWeight;
self.graph = nil;
}
return self;
}
#pragma mark - Chart behavior
-(void)initPlot {
[self configureGraph];
[self configurePlots];
[self configureAxes];
}
-(void)configureGraph {
// 1 - Create the graph
CPTGraph *graph = [[CPTXYGraph alloc] initWithFrame:self.hostView.bounds];
[graph applyTheme:[CPTTheme themeNamed:kCPTDarkGradientTheme]];
self.hostView.hostedGraph = graph;
// 2 - Set graph title
NSString *title = @"Body weight actual and goal";
graph.title = title;
// 3 - Create and set text style
CPTMutableTextStyle *titleStyle = [CPTMutableTextStyle textStyle];
titleStyle.color = [CPTColor whiteColor];
titleStyle.fontName = @"Helvetica-Bold";
titleStyle.fontSize = 16.0f;
graph.titleTextStyle = titleStyle;
graph.titlePlotAreaFrameAnchor = CPTRectAnchorTop;
graph.titleDisplacement = CGPointMake(0.0f, 10.0f);
// 4 - Set padding for plot area
[graph.plotAreaFrame setPaddingLeft:30.0f];
[graph.plotAreaFrame setPaddingBottom:30.0f];
// 5 - Enable user interactions for plot space
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *) graph.defaultPlotSpace;
plotSpace.allowsUserInteraction = YES;
}
-(void)configurePlots {
// 1 - Get graph and plot space
CPTGraph *graph = self.hostView.hostedGraph;
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *) graph.defaultPlotSpace;
// 2 - Create the two plots
CPTScatterPlot *actualPlot = [[CPTScatterPlot alloc] init];
actualPlot.dataSource = self;
actualPlot.identifier = CPDTickerSymbolActual;
CPTColor *actualColor = [CPTColor redColor];
[graph addPlot:actualPlot toPlotSpace:plotSpace];
CPTScatterPlot *goalPlot = [[CPTScatterPlot alloc] init];
goalPlot.dataSource = self;
goalPlot.identifier = CPDTickerSymbolGoal;
CPTColor *goalColor = [CPTColor greenColor];
[graph addPlot:goalPlot toPlotSpace:plotSpace];
// 3 - Set up plot space
[plotSpace scaleToFitPlots:[NSArray arrayWithObjects:actualPlot,nil]];
CPTMutablePlotRange *xRange = [plotSpace.xRange mutableCopy];
[xRange expandRangeByFactor:CPTDecimalFromCGFloat(1.1f)];
plotSpace.xRange = xRange;
CPTMutablePlotRange *yRange = [plotSpace.yRange mutableCopy];
[yRange expandRangeByFactor:CPTDecimalFromCGFloat(1.2f)];
plotSpace.yRange = yRange;
// 4 - Create styles and symbols
CPTMutableLineStyle *actualLineStyle = [actualPlot.dataLineStyle mutableCopy];
actualLineStyle.lineWidth = 2.5;
actualLineStyle.lineColor = actualColor;
actualPlot.dataLineStyle = actualLineStyle;
CPTMutableLineStyle *actualSymbolLineStyle = [CPTMutableLineStyle lineStyle];
actualSymbolLineStyle.lineColor = actualColor;
CPTPlotSymbol *actualSymbol = [CPTPlotSymbol hexagonPlotSymbol];
actualSymbol.fill = [CPTFill fillWithColor:actualColor];
actualSymbol.lineStyle = actualSymbolLineStyle;
actualSymbol.size = CGSizeMake(6.0f, 6.0f);
actualPlot.plotSymbol = actualSymbol;
CPTMutableLineStyle *goalLineStyle = [goalPlot.dataLineStyle mutableCopy];
goalLineStyle.lineWidth = 1.0;
goalLineStyle.lineColor = goalColor;
goalPlot.dataLineStyle = goalLineStyle;
CPTMutableLineStyle *goalSymbolLineStyle = [CPTMutableLineStyle lineStyle];
goalSymbolLineStyle.lineColor = goalColor;
CPTPlotSymbol *goalSymbol = [CPTPlotSymbol starPlotSymbol];
goalSymbol.fill = [CPTFill fillWithColor:goalColor];
goalSymbol.lineStyle = goalSymbolLineStyle;
goalSymbol.size = CGSizeMake(6.0f, 6.0f);
goalPlot.plotSymbol = goalSymbol;
}
-(void)configureAxes {
// 1 - Create styles
CPTMutableTextStyle *axisTitleStyle = [CPTMutableTextStyle textStyle];
axisTitleStyle.color = [CPTColor whiteColor];
axisTitleStyle.fontName = @"Helvetica-Bold";
axisTitleStyle.fontSize = 12.0f;
CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle];
axisLineStyle.lineWidth = 2.0f;
axisLineStyle.lineColor = [CPTColor whiteColor];
CPTMutableTextStyle *axisTextStyle = [[CPTMutableTextStyle alloc] init];
axisTextStyle.color = [CPTColor whiteColor];
axisTextStyle.fontName = @"Helvetica-Bold";
axisTextStyle.fontSize = 11.0f;
CPTMutableLineStyle *tickLineStyle = [CPTMutableLineStyle lineStyle];
tickLineStyle.lineColor = [CPTColor whiteColor];
tickLineStyle.lineWidth = 2.0f;
CPTMutableLineStyle *gridLineStyle = [CPTMutableLineStyle lineStyle];
tickLineStyle.lineColor = [CPTColor blackColor];
tickLineStyle.lineWidth = 1.0f;
// 2 - Get axis set
CPTXYAxisSet *axisSet = (CPTXYAxisSet *) self.hostView.hostedGraph.axisSet;
// 3 - Configure x-axis
CPTAxis *x = axisSet.xAxis;
x.title = @"Weeks ->";
x.titleTextStyle = axisTitleStyle;
x.titleOffset = 15.0f;
x.axisLineStyle = axisLineStyle;
x.labelingPolicy = CPTAxisLabelingPolicyNone;
x.labelTextStyle = axisTextStyle;
x.majorTickLineStyle = axisLineStyle;
x.majorTickLength = 4.0f;
x.tickDirection = CPTSignNegative; //commented by me
// x.tickDirection = CPTSignPositive;
NSInteger xmajorIncrement = 2;
NSInteger xminorIncrement = 1;
//CGFloat dateCount = [[[CPDStockPriceStore sharedInstance] datesInMonth] count];
CGFloat dateCount = 20;
NSMutableSet *xLabels = [NSMutableSet setWithCapacity:dateCount];
NSMutableSet *xLocations = [NSMutableSet setWithCapacity:dateCount];
NSInteger i = 0;
for (NSString *date in [[CPDStockPriceStore sharedInstance] datesInMonth]) {
CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:date textStyle:x.labelTextStyle];
CGFloat location = i++;
// CGFloat location = ++i;
label.tickLocation = CPTDecimalFromCGFloat(location);
label.offset = x.majorTickLength;
if (label) {
[xLabels addObject:label];
[xLocations addObject:[NSNumber numberWithFloat:location]];
}
}
x.axisLabels = xLabels;
x.majorTickLocations = xLocations;
// 4 - Configure y-axis
CPTAxis *y = axisSet.yAxis;
y.title = @"Weight ->";
y.titleTextStyle = axisTitleStyle;
y.titleOffset = -40.0f; //commented by me
y.axisLineStyle = axisLineStyle;
y.majorGridLineStyle = gridLineStyle;
y.labelingPolicy = CPTAxisLabelingPolicyNone;
y.labelTextStyle = axisTextStyle;
y.labelOffset = 16.0f;
y.majorTickLineStyle = axisLineStyle;
y.majorTickLength = 4.0f;
y.minorTickLength = 2.0f;
y.tickDirection = CPTSignPositive;
NSInteger majorIncrement = 40;
NSInteger minorIncrement = 20;
CGFloat yMax = 300.0f; // should determine dynamically based on max price
NSMutableSet *yLabels = [NSMutableSet set];
NSMutableSet *yMajorLocations = [NSMutableSet set];
NSMutableSet *yMinorLocations = [NSMutableSet set];
for (NSInteger j = minorIncrement; j <= yMax; j += minorIncrement) {
NSUInteger mod = j % majorIncrement;
if (mod == 0) {
CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%i", j] textStyle:y.labelTextStyle];
NSDecimal location = CPTDecimalFromInteger(j);
label.tickLocation = location;
label.offset = -y.majorTickLength - y.labelOffset;
if (label) {
[yLabels addObject:label];
}
[yMajorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:location]];
} else {
[yMinorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:CPTDecimalFromInteger(j)]];
}
}
y.axisLabels = yLabels;
y.majorTickLocations = yMajorLocations;
y.minorTickLocations = yMinorLocations;
}
#pragma mark - CPTPlotDataSource methods
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot {
//return [[[CPDStockPriceStore sharedInstance] datesInMonth] count];
return 20;
}
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index {
NSInteger valueCount = [[[CPDStockPriceStore sharedInstance] datesInMonth] count];
// NSValue *value = [self.graphData objectAtIndex:index];
// CGPoint point = [value CGPointValue];
switch (fieldEnum) {
case CPTScatterPlotFieldX:
if (index < valueCount) {
//if( [plot.identifier isEqual:CPDTickerSymbolGoal] == YES)
return [NSNumber numberWithUnsignedInteger:index];
}
break;
case CPTScatterPlotFieldY:
if ([plot.identifier isEqual:CPDTickerSymbolActual] == YES ) {
//return [[[CPDStockPriceStore sharedInstance] monthlyPrices:CPDTickerSymbolAAPL] objectAtIndex:index];
if(index < [_graphEmpActualWeightData count]){
// return [_graphEmpActualWeightData objectAtIndex:index];
return (NSDecimalNumber *)[NSDecimalNumber numberWithDouble:[[_graphEmpActualWeightData objectAtIndex:index] doubleValue]];
}
else{
// return (NSNumber *) nil;
}
} else if ([plot.identifier isEqual:CPDTickerSymbolGoal] == YES) {
//return [[[CPDStockPriceStore sharedInstance] monthlyPrices:CPDTickerSymbolGOOG]
//return [_graphEmpGoalWeightData objectAtIndex:index];
return (NSDecimalNumber *)[NSDecimalNumber numberWithDouble:[[_graphEmpGoalWeightData objectAtIndex:index] doubleValue]];
}
break;
}
return [NSDecimalNumber zero];
}
// This does the actual work of creating the plot if we don't already have a graph object.
-(void)initialisePlot
{
// Start with some simple sanity checks before we kick off
if ( (self.hostView == nil) || (self.graphEmpGoalWeightData == nil) ) {
NSLog(@"TUTSimpleScatterPlot: Cannot initialise plot without hosting view or data.");
return;
}
if ( self.graph != nil ) {
NSLog(@"TUTSimpleScatterPlot: Graph object already exists.");
return;
}
[self initPlot];
}
`嗨朋友们，从昨天开始我一直在努力解决这个问题。迫切需要你的帮助。我是核心图的新手，当我尝试在图中绘制第二个图时一直面临崩溃问题。每次我都会得到不同的不同原因。其中一些粘贴在下面。
1) *由于未捕获的异常 'NSInvalidArgumentException' 导致应用程序终止，原因：'-[__NSArrayM numberOfRecordsForPlot:]: unrecognized selector sent to instance 0x726adc0'
2)EXC_BAD_ACCESS
3) *由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[CALayerArray numberOfRecordsForPlot:]: unrecognized selector sent to instance 0x769f5b0”
4) *由于未捕获的异常 'NSInvalidArgumentException' 导致应用程序终止，原因：'-[__NSDecimalNumber numberOfRecordsForPlot:]: unrecognized selector sent to instance 0x726adc0'
我真的不明白我的代码出了什么问题。当我工作正常时