Есть ли способ использовать ось рассеяния графика рассеяния с осью времени эпохи?Это диапазон графика, который я использовал.
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(1329375688) length:CPTDecimalFromFloat(100)];
Я читаю значения эпох из файла.
-(void)plot1{
// Start with some simple sanity checks before we kick off
if ( (self.scatterPlotView1 == nil) || (self.graphData == nil)) {
NSLog(@"TUTSimpleScatterPlot: Cannot initialise plot without scatterPlotView1 or data.");
return;
}
if ( (self.graph != nil) ) {
NSLog(@"TUTSimpleScatterPlot: Graph object already exists.");
return;
}
// Create a graph object which we will use to host just one scatter plot.
CPTTimeFormatter *dateTimeFormatterForXAxis;
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setMaximumFractionDigits:0];
_graph=[[CPTXYGraph alloc] initWithFrame:CGRectMake(0,500,750,500)];
self.scatterPlotView1.hostedGraph = _graph;
// Add some padding to the graph, with more at the bottom for axis labels.
self.graph.plotAreaFrame.paddingTop = 20.0f;
self.graph.plotAreaFrame.paddingRight = 10.0f;
self.graph.plotAreaFrame.paddingBottom = 30.0f;
self.graph.plotAreaFrame.paddingLeft= 35.0f;
// Tie the graph we've created with the hosting view.
self.scatterPlotView1.hostedGraph = self.graph;
// If you want to use one of the default themes - apply that here.
[self.graph applyTheme:[CPTTheme themeNamed:kCPTPlainWhiteTheme]];
// Create a line style that we will apply to the axis and data line.
CPTMutableLineStyle *lineStyle = [CPTMutableLineStyle lineStyle];
CPTMutableLineStyle *gridStyle = [CPTMutableLineStyle lineStyle];
CPTMutableLineStyle *plotStyle = [CPTMutableLineStyle lineStyle];
lineStyle.lineColor = [CPTColor redColor];
lineStyle.lineWidth = 2.0f;
gridStyle.lineColor = [CPTColor redColor];
gridStyle.lineWidth = 1.0f;
plotStyle.lineColor = [CPTColor blackColor];
plotStyle.lineWidth = 1.0;
// Create a text style that we will use for the axis labels.
CPTMutableTextStyle *textStyle = [CPTMutableTextStyle textStyle];
textStyle.fontName = @"Helvetica";
textStyle.fontSize = 14;
textStyle.color = [CPTColor blackColor];
// Create the plot symbol we're going to use.
CPTPlotSymbol *plotSymbol = [CPTPlotSymbol ellipsePlotSymbol];
plotSymbol.lineStyle = plotStyle;
plotSymbol.size = CGSizeMake(2.0, 2.0);
// Setup some floats that represent the min/max values on our axis.
float xAxisMin = 0;
float xAxisMax = 10;
float yAxisMin = 0;
float yAxisMax = 100;
// We modify the graph's plot space to setup the axis' min / max values.
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)self.graph.defaultPlotSpace;
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(1329375688) length:CPTDecimalFromFloat(500)];
plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(yAxisMin) length:CPTDecimalFromFloat(yAxisMax - yAxisMin)];
// Modify the graph's axis with a label, line style, etc.
CPTXYAxisSet *axisSet = (CPTXYAxisSet *)self.graph.axisSet;
axisSet.xAxis.visibleRange =[CPTPlotRange plotRangeWithLocation:CPTDecimalFromDouble(yAxisMin) length:CPTDecimalFromDouble(yAxisMax)];
axisSet.yAxis.visibleRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromDouble(yAxisMin) length:CPTDecimalFromDouble(yAxisMax)];
axisSet.xAxis.title = @"Time(per sec)";
axisSet.xAxis.titleTextStyle = textStyle;
axisSet.xAxis.axisLineStyle = lineStyle;
axisSet.xAxis.titleOffset = 30.0f;
axisSet.xAxis.majorTickLineStyle = lineStyle;
axisSet.xAxis.minorTickLineStyle = lineStyle;
axisSet.xAxis.majorGridLineStyle = lineStyle;
axisSet.xAxis.minorGridLineStyle=gridStyle;
axisSet.xAxis.gridLinesRange = axisSet.xAxis.visibleRange;
axisSet.xAxis.labelOffset = 6.0f;
axisSet.xAxis.majorIntervalLength = CPTDecimalFromFloat(2.0f);
axisSet.xAxis.minorTicksPerInterval = 5;
axisSet.xAxis.minorTickLength = 10.0f;
axisSet.xAxis.majorTickLength = 7.0f;
axisSet.xAxis.labelTextStyle = textStyle;
axisSet.xAxis.labelFormatter = formatter;
axisSet.yAxis.title = @"Uterus Ccontraction";
axisSet.yAxis.titleTextStyle = textStyle;
axisSet.yAxis.titleOffset = 20.0f;
axisSet.yAxis.axisLineStyle = lineStyle;
axisSet.yAxis.majorTickLineStyle = lineStyle;
axisSet.yAxis.minorTickLineStyle = lineStyle;
axisSet.yAxis.labelTextStyle = textStyle;
axisSet.yAxis.labelFormatter = formatter;
axisSet.yAxis.majorGridLineStyle= lineStyle;
axisSet.yAxis.minorGridLineStyle=gridStyle;
axisSet.yAxis.gridLinesRange = axisSet.yAxis.visibleRange;
axisSet.yAxis.labelOffset = 3.0f;
axisSet.yAxis.majorIntervalLength = CPTDecimalFromFloat(10.0f);
axisSet.yAxis.minorTicksPerInterval = 1;
axisSet.yAxis.minorTickLength = 5.0f;
axisSet.yAxis.majorTickLength = 7.0f;
// Add a plot to our graph and axis. We give it an identifier so that we
// could add multiple plots (data lines) to the same graph if necessary.
CPTScatterPlot *plot = [[CPTScatterPlot alloc] init];
plot.dataSource = self;
plot.identifier = @"mainplot";
plot.dataLineStyle = plotStyle;
plot.plotSymbol = plotSymbol;
//[self.graph reloadData];
[self.graph setNeedsDisplay];
[self.graph addPlot:plot];
}
//Delegate method that returns the number of points on the plot
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot
{
if ( [plot.identifier isEqual:@"mainplot"] )
{
return [self.graphData count];
}
return 0;
}
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex: (NSUInteger)index
{
if ( [plot.identifier isEqual:@"mainplot"] )
{
//NSValue *value = [self.graphData objectAtIndex:index];
//CGPoint point = [value CGPointValue];
if(self.scatterPlotView1){
NSDictionary *entry = [self.graphData objectAtIndex:index];
CGFloat x = [[entry objectForKey:@"X"] floatValue];
CGFloat y = [[entry objectForKey:@"Y"] floatValue];
CGPoint point = CGPointMake(x, y);
// FieldEnum determines if we return an X or Y value.
if ( fieldEnum == CPTScatterPlotFieldX )
{
return [NSNumber numberWithFloat:point.x];
}
else // Y-Axis
{
return [NSNumber numberWithFloat:point.y];
}
} else if(self.scatterPlotView2){
NSDictionary *entry = [self.graphData objectAtIndex:index];
CGFloat x = [[entry objectForKey:@"X"] floatValue];
CGFloat z = [[entry objectForKey:@"Y"] floatValue];
CGPoint point1 = CGPointMake(x, z);
// FieldEnum determines if we return an X or Y value.
if ( fieldEnum == CPTScatterPlotFieldX )
{
return [NSNumber numberWithFloat:point1.x];
}
else // Y-Axis
{
return [NSNumber numberWithFloat:point1.y];
}
}
}
return [NSNumber numberWithFloat:0];
}
Когда я устанавливаю диапазон графика xaxis, как указано выше, я заканчиваюполучить сжатый график.Это потому, что я беру диапазон за плавающий диапазон?