根据几个月和几年中achartengine显示时间图 [英] Displaying time chart in achartengine based on months and years

问题描述

我有一个基于我的数据库值的曲线图，其中y轴有值和X轴有日期。截至目前图表显示智者日期。但我想它显示不同的时间段一样每月和每年。

谁能给我任何想法？
谢谢

下面是我的code： -

  FuelStoredInfo reportInfo =新FuelStoredInfo（背景）;
        reportInfo.open（）;
        fPrice = reportInfo.getReportData（本）;
        fMileage = reportInfo.getReportMileage（本）;
        fDates = reportInfo.getReportDates（本）;
        reportInfo.close（）;
                SimpleDateFormat的SDF =新的SimpleDateFormat（DD / MM / YYYY）;                    TimeSeries的fPriceseries =新的TimeSeries（燃油价格）;
                    的for（int i = 0; I＆LT; fDates.length;我++）
                    {
                            尝试
                            {
                                fPriceseries.add（sdf.parse（fDates [I] .trim（）），fPrice [I]）;
                            }
                            赶上（ParseException的E）
                            {
                                // TODO自动生成catch块
                                e.printStackTrace（）;
                            }
                    }                    TimeSeries的fMileageSeries =新的TimeSeries（里程）;
                    的for（int i = 0; I＆LT; fDates.length;我++）
                    {
                        尝试
                        {
                            fMileageSeries.add（sdf.parse（fDates [I] .trim（）），fMileage [I]）;
                        }
                        赶上（ParseException的E）
                        {
                            // TODO自动生成catch块
                            e.printStackTrace（）;
                        }
                    }数据=新XYMultipleSeriesDataset（）;
                        dataset.addSeries（fPriceseries）;
                        dataset.addSeries（fMileageSeries）;
 

解决方案

从的角度AChartEngine时候，你可以通过改变可见区域和重绘图形调整的时间周期显示：

  renderer.setXAxisMin（MINDATE）;
renderer.setXAxisMax（MAXDATE）;
chartView.repaint（）;
 

I have a line graph based on my database values where y axis has values and x axis has dates. As of now the chart is displayed date wise. But i want to display it different time periods like monthly and yearly.

Can anyone give me any ideas for this? Thank you

Here is my code:-

FuelStoredInfo reportInfo =new FuelStoredInfo(context);
        reportInfo.open();
        fPrice=reportInfo.getReportData(this);
        fMileage = reportInfo.getReportMileage(this);
        fDates =reportInfo.getReportDates(this);
        reportInfo.close();


                SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");

                    TimeSeries fPriceseries = new TimeSeries("Fuel prices");
                    for (int i = 0; i < fDates.length; i++)
                    {
                            try 
                            {
                                fPriceseries.add(sdf.parse(fDates[i].trim()), fPrice[i]);
                            } 
                            catch (ParseException e)
                            {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                    }

                    TimeSeries fMileageSeries = new TimeSeries("Mileage");
                    for(int i=0;i<fDates.length;i++)
                    {
                        try 
                        {
                            fMileageSeries.add(sdf.parse(fDates[i].trim()), fMileage[i]);
                        } 
                        catch (ParseException e) 
                        {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }


                    }

dataset = new XYMultipleSeriesDataset();
                        dataset.addSeries(fPriceseries);
                        dataset.addSeries(fMileageSeries);

解决方案

From the AChartEngine point of view, you can tweak the displaying period of time by changing the visible area and repainting the graph:

renderer.setXAxisMin(minDate);
renderer.setXAxisMax(maxDate);
chartView.repaint();

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