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두 개의 다른 플롯 공간 (그래프에서)에 두 개의 플롯 (그림 및 막대 플롯)을 그리려고합니다. 두 플롯 모두 데이터 소스와 동일한 x 축을 공유합니다.다른 플롯의 y 범위를 사용하는 두 번째 플롯 - 코어 플롯
지금까지 두 가지 모두 성공적으로 플로팅 할 수있었습니다. 그러나 막대 그래프에서는 막대를 높이 교정 할 수 없습니다. 즉 모두 사용 가능한 최대 높이로 플롯됩니다. 나는 매우 어리석은 뭔가가 빠져 있다는 것을 안다. 그러나 나는 그것을 알아낼 수 없다. 이미 많은 답변을 시도했지만 문제를 해결할 수 없었습니다.
코드 :
-(void) setMajorIntervalForXAxis
{
if(totIntervalShown <= 3600 * 2)
((CPTXYAxisSet *)graph.axisSet).xAxis.majorIntervalLength = CPTDecimalFromFloat(1800);
else if(totIntervalShown <= 3600 * 4)
((CPTXYAxisSet *)graph.axisSet).xAxis.majorIntervalLength = CPTDecimalFromFloat(3600);
else
((CPTXYAxisSet *)graph.axisSet).xAxis.majorIntervalLength = CPTDecimalFromFloat(7200);
}
-(void)renderInLayer:(CPTGraphHostingView *)layerHostingView withTheme:(CPTTheme *)theme animated:(BOOL)animated
{
// Setup scatter plot space
plotSpace = (CPTXYPlotSpace *)graph.defaultPlotSpace;
plotSpace.allowsUserInteraction = NO;
barPlotSpace = [[CPTXYPlotSpace alloc]init];
barPlotSpace.allowsUserInteraction = NO;
if(plotData.count > 0)
{
NSDate *finaldate = [formatter dateFromString:[[plotData objectAtIndex:plotData.count - 1] objectAtIndex:0]];
totIntervalShown = [finaldate timeIntervalSinceDate:refDate];
}
else
{
totIntervalShown = 0;
}
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0) length:CPTDecimalFromFloat(/*3600 * 7.5f*/totIntervalShown)];
plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(MinPrice - margin) length:CPTDecimalFromFloat(MaxPrice - MinPrice + margin)];
barPlotSpace.xRange = plotSpace.xRange;
barPlotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0) length:CPTDecimalFromFloat(maxVolume + (maxVolume/5))];
[graph addPlotSpace:barPlotSpace];
// Axes
CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;
CPTXYAxis *x = axisSet.xAxis;
// x.majorIntervalLength = CPTDecimalFromFloat(7200);
[self setMajorIntervalForXAxis];
x.orthogonalCoordinateDecimal = CPTDecimalFromInt(margin + MinPrice);
x.majorGridLineStyle = majorGridLineStyle;
x.minorGridLineStyle = minorGridLineStyle;
x.axisLineStyle = nil;
x.labelingPolicy = CPTAxisLabelingPolicyFixedInterval;
x.axisConstraints = [CPTConstraints constraintWithLowerOffset:0];
CPTTimeFormatter *timeFormatter = [[CPTTimeFormatter alloc] initWithDateFormatter:axisFormatter];
timeFormatter.referenceDate = refDate;
x.labelFormatter = timeFormatter;
CPTXYAxis *y = axisSet.yAxis;
y.labelingPolicy = CPTAxisLabelingPolicyAutomatic;
y.orthogonalCoordinateDecimal = CPTDecimalFromFloat(7200);
y.majorGridLineStyle = majorGridLineStyle;
y.minorGridLineStyle = minorGridLineStyle;
y.axisLineStyle = nil;
// y.preferredNumberOfMajorTicks = 6;
y.axisConstraints = [CPTConstraints constraintWithLowerOffset:5];
CPTXYAxis *rightY = [[CPTXYAxis alloc]init];
rightY.labelingPolicy = CPTAxisLabelingPolicyAutomatic;
rightY.orthogonalCoordinateDecimal = CPTDecimalFromFloat(totIntervalShown);
rightY.majorGridLineStyle = majorGridLineStyle;
rightY.axisConstraints = [CPTConstraints constraintWithUpperOffset:20];
rightY.coordinate = CPTCoordinateY;
rightY.axisLineStyle = nil;
rightY.majorIntervalLength = CPTDecimalFromLongLong(maxVolume/5);
rightY.plotSpace = barPlotSpace;
graph.axisSet.axes = [NSArray arrayWithObjects:x, y, rightY, nil];
NSNumberFormatter *numFormatter = [[NSNumberFormatter alloc] init];
[numFormatter setNumberStyle: NSNumberFormatterDecimalStyle];
rightY.labelFormatter = numFormatter;
// Create a plot that uses the data source method
linePlot = [[CPTScatterPlot alloc] init];
linePlot.identifier = @"Line Plot";
CPTMutableLineStyle *lineStyle = [linePlot.dataLineStyle mutableCopy];
lineStyle.lineWidth = 1.0;
lineStyle.lineColor = [CPTColor colorWithComponentRed:236/255.0 green:124/255.0 blue:41/255.0 alpha:1.0];
linePlot.dataLineStyle = lineStyle;
linePlot.dataSource = self;
[graph addPlot:linePlot];
// Create a bar line style
CPTMutableLineStyle *barLineStyle = [[CPTMutableLineStyle alloc] init];
barLineStyle.lineWidth = 1.0;
barLineStyle.lineColor = [CPTColor colorWithComponentRed:1.0 green:0 blue:0 alpha:0.4];
barPlot = [[CPTBarPlot alloc] init];
barPlot.identifier = @"Bar Plot";
barPlot.plotSpace = barPlotSpace;
barPlot.barBasesVary = NO;
barPlot.barsAreHorizontal = NO;
barPlot.barWidth = CPTDecimalFromCGFloat(0.5);
barPlot.dataSource = self;
barPlot.lineStyle = barLineStyle;
barPlot.fill = [CPTFill fillWithColor:[CPTColor redColor]];
[graph addPlot:barPlot];
//graph.axisSet.axes = [NSArray arrayWithObjects:x, y, rightY, nil];
CPTMutableTextStyle *textstyle = [CPTMutableTextStyle textStyle];
textstyle.fontName = @"Helvetica";
textstyle.fontSize = 10.0;
textstyle.color = [CPTColor whiteColor];
x.labelTextStyle = textstyle;
y.labelTextStyle = textstyle;
rightY.labelTextStyle = textstyle;
}
데이터 소스 :
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot
{
return plotData.count;
}
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index
{
NSNumber *num;
if([(NSString *)plot.identifier isEqualToString:@"Line Plot"])
{
if(fieldEnum == CPTScatterPlotFieldY)
{
num = [NSNumber numberWithFloat:[[[plotData objectAtIndex:index] objectAtIndex:1] floatValue]];
}
else
{
NSString *dateStrExtracted = [[plotData objectAtIndex:index] objectAtIndex:0];
NSDate *dateExt = [formatter dateFromString:dateStrExtracted];
float interval = [dateExt timeIntervalSinceDate:refDate];
num = [NSNumber numberWithFloat:interval];
}
}
else
{
if(fieldEnum == CPTBarPlotFieldBarLocation)
{
//num = [NSNumber numberWithFloat:[[[plotData objectAtIndex:index] objectAtIndex:1] floatValue]];
NSString *dateStrExtracted = [[plotData objectAtIndex:index] objectAtIndex:0];
NSDate *dateExt = [formatter dateFromString:dateStrExtracted];
float interval = [dateExt timeIntervalSinceDate:refDate];
num = [NSNumber numberWithFloat:interval];
}
else if(fieldEnum == CPTBarPlotFieldBarTip)
{
num = [NSNumber numberWithLongLong:[[[plotData objectAtIndex:index] objectAtIndex:2] longLongValue]];
}
}
return num;
}
값은 막대 플롯 팁에 대해 반환은 500과 같은, 10004005000 등하지만 모두가 같은 높이로 그려집니다. 나는 바 플롯이 산포도를위한 범위를 고려하고 있다고 생각한다. 아니면 뭔가가있을 수 있습니까? 내가 어디에서 잘못 될 수 있는지 안내해 주시겠습니까? 감사.
