CorePlotを使用した描画グラフでの問題

Question

24時間ベースのアクティビティを示すグラフを作成しようとしているログベースのアプリケーションを作成したいと考えています。 1時間は4時間（15分）に分割する必要があります。私はコアプロットを同じものに使用しようとしました。私はこれまでに行ったコードを添付して、グラフは今まで持っています。

const CGFloat majorTickLength = 20; // height of the major tick 
const CGFloat minorTickLength = 8.0; // height of the minor tick 
// const CGFloat titleOffset  = self.titleSize; 

#if TARGET_OS_IPHONE 
CGRect bounds = hostingView.bounds; 
#else 
CGRect bounds = NSRectToCGRect(hostingView.bounds); 
#endif 

// Create graph 
CPTGraph *graph = [[CPTXYGraph alloc] initWithFrame:bounds]; 
[self addGraph:graph toHostingView:hostingView]; 
[self applyTheme:theme toGraph:graph withDefault:[CPTTheme themeNamed:kCPTSlateTheme]]; 

graph.fill = [CPTFill fillWithColor:[CPTColor blackColor]]; 

// Plot area 
graph.plotAreaFrame.paddingTop = self.titleSize; 
graph.plotAreaFrame.paddingBottom = self.titleSize; 
graph.plotAreaFrame.paddingLeft = self.titleSize; 
graph.plotAreaFrame.paddingRight = self.titleSize; 
graph.plotAreaFrame.masksToBorder = NO; 

// Setup plot space 
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)graph.defaultPlotSpace; 
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:@0.0 length:@1440.0]; 
plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:@0.0 length:@20.0]; 

// Line styles 
CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle]; 
axisLineStyle.lineWidth = 2.0; 

CPTMutableLineStyle *majorTickLineStyle = [axisLineStyle mutableCopy]; 
majorTickLineStyle.lineWidth = 1.0; 
majorTickLineStyle.lineCap = kCGLineCapRound; 

CPTMutableLineStyle *minorTickLineStyle = [axisLineStyle mutableCopy]; 
minorTickLineStyle.lineWidth = 1.0; 
minorTickLineStyle.lineCap = kCGLineCapButt; 

// Text styles 
CPTMutableTextStyle *axisTitleTextStyle = [CPTMutableTextStyle textStyle]; 
axisTitleTextStyle.fontName = @"Helvetica-Bold"; 


CPTMutableNumberSet *majorTickLocations = [NSMutableSet set]; 

for (int i = 60; i <= 1440; i += 60) 
{ 
    [majorTickLocations addObject:@(i)]; 
} 

CPTMutableNumberSet *minorTickLocations = [NSMutableSet set]; 
for (NSUInteger loc = 0; loc <= 1440; loc += 15) 
{ 
    [minorTickLocations addObject:@(loc)]; 
} 


// Axis1 
CPTXYAxis *axis1 = [[CPTXYAxis alloc] init]; 
axis1.plotSpace   = graph.defaultPlotSpace; 
axis1.labelingPolicy  = CPTAxisLabelingPolicyNone; 
axis1.orthogonalPosition = @1.0; 
axis1.tickDirection  = CPTSignPositive; 
axis1.axisLineStyle  = axisLineStyle; 
axis1.majorTickLength = majorTickLength; 
axis1.majorTickLineStyle = majorTickLineStyle; 
axis1.minorTickLength = minorTickLength; 
axis1.minorTickLineStyle = minorTickLineStyle; 
axis1.majorTickLocations = majorTickLocations; 
axis1.minorTickLocations = minorTickLocations; 
// Axis2 
CPTXYAxis *axis2 = [[CPTXYAxis alloc] init]; 
axis2.plotSpace   = graph.defaultPlotSpace; 
axis2.labelingPolicy  = CPTAxisLabelingPolicyNone; 
axis2.orthogonalPosition = @2.0; 
axis2.tickDirection  = CPTSignPositive; 
axis2.axisLineStyle  = axisLineStyle; 
axis2.majorTickLength = majorTickLength; 
axis2.majorTickLineStyle = majorTickLineStyle; 
axis2.minorTickLength = minorTickLength; 
axis2.minorTickLineStyle = minorTickLineStyle; 
axis2.majorTickLocations = majorTickLocations; 
axis2.minorTickLocations = minorTickLocations; 
// Axis3 
CPTXYAxis *axis3 = [[CPTXYAxis alloc] init]; 
axis3.plotSpace   = graph.defaultPlotSpace; 
axis3.labelingPolicy  = CPTAxisLabelingPolicyNone; 
axis3.orthogonalPosition = @3.0; 
axis3.tickDirection  = CPTSignPositive; 
axis3.axisLineStyle  = axisLineStyle; 
axis3.majorTickLength = majorTickLength; 
axis3.majorTickLineStyle = majorTickLineStyle; 
axis3.minorTickLength = minorTickLength; 
axis3.minorTickLineStyle = minorTickLineStyle; 
axis3.majorTickLocations = majorTickLocations; 
axis3.minorTickLocations = minorTickLocations; 
// Axis4 
CPTXYAxis *axis4 = [[CPTXYAxis alloc] init]; 
axis4.plotSpace   = graph.defaultPlotSpace; 
axis4.labelingPolicy  = CPTAxisLabelingPolicyNone; 
axis4.orthogonalPosition = @4.0; 
axis4.tickDirection  = CPTSignPositive; 
axis4.axisLineStyle  = axisLineStyle; 
axis4.majorTickLength = majorTickLength; 
axis4.majorTickLineStyle = majorTickLineStyle; 
axis4.minorTickLength = minorTickLength; 
axis4.minorTickLineStyle = minorTickLineStyle; 
axis4.majorTickLocations = majorTickLocations; 
axis4.minorTickLocations = minorTickLocations; 

CPTMutableAxisLabelSet *axis4LabelSet = [NSMutableSet set]; 

for (NSUInteger i = 1; i < 24; i++) 
{ 
    CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%lu", (unsigned long)i] 
                 textStyle:axis4.labelTextStyle]; 
    newLabel.tickLocation = @(i*60); 
    newLabel.offset  = axis4.labelOffset + axis4.majorTickLength; 

    [axis4LabelSet addObject:newLabel]; 
} 
axis4.axisLabels = axis4LabelSet; 



// Add axes to the graph 
graph.axisSet.axes = @[axis1, axis2, axis3, axis4]; 

は、私の上記のコードでは、私は15分の間隔を表すために毎時間とminorTickLocationsを表すためにmajorTickLocationsを使用することができました。しかし、私の望む出力は次のようなイメージです。それぞれの30分のマークは異なるようにも表示する必要があります。どのように私はこれを達成することができます。

Answer 1

横軸をもう1つ追加します。 4つの既存のものでは、15分間隔の小さな目盛りと30分間隔の大きな目盛りを使用します。新しい軸で、時間間隔で主要なグリッドライン（majorTickLocationsで描画）を設定します。新しい軸に目盛りは必要ありません。