Core plot 在coreplot中绘制epochtime
我得到的数据有epochtime，需要在轴上以固定的间隔时间显示此epochtime。我可以这样做，但在显示时，我只需要显示日期，而不需要显示epochtime 代码片段 long-long xLow=[[plotData-firstObject]objectForKey:@“Time”]longLongValue]； long-long xHigh=[[plotData-lastObject]objectForKey:@“Time”]longLongValue]Core plot 在coreplot中绘制epochtime,core-plot,epoch,Core Plot,Epoch,我得到的数据有epochtime，需要在轴上以固定的间隔时间显示此epochtime。我可以这样做，但在显示时，我只需要显示日期，而不需要显示epochtime 代码片段 long-long xLow=[[plotData-firstObject]objectForKey:@“Time”]longLongValue]； long-long xHigh=[[plotData-lastObject]objectForKey:@“Time”]longLongValue] plotSpace.xRang
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromDouble(xLow)
length:CPTDecimalFromDouble(xHigh-xLow)];
// Set axis styles
CPTXYAxis *leftY = [(CPTXYAxisSet *)graph.axisSet yAxis];
CPTXYAxis *x = [(CPTXYAxisSet *)graph.axisSet xAxis];
x.preferredNumberOfMajorTicks = 6;
long long intervalSize = (xHigh - xLow)/6;
x.majorIntervalLength = CPTDecimalFromLongLong(intervalSize);
x.majorTickLength = 2.0;
x.minorTickLength = 1.0;
轴标签需要
labelFormatterCPTTimeFormatterCPTCalendarFormatter