我需要更改此代码,使X轴包含格式为“H:M”的时间戳,例如: 10:00。
private static XYDataset createCategoryDataset(Map<Integer,List<Task>> staffLevels)
{
String series1 = "Task demand";
DefaultXYDataset dataset = new DefaultXYDataset();
double[][] data = new double[2][staffLevels.size()];
int min_per_hour = 60;
for (int i=0; i<staffLevels.size(); i++)
{
int seconds = i*Parameters.MIN_TIME_UNIT*60;
int hours = (i*Parameters.MIN_TIME_UNIT) / min_per_hour;
int minutes = (seconds / min_per_hour) % min_per_hour;
data[0][i] = hours + ":" + minutes;
data[1][i] = staffLevels.get(i).size();
}
dataset.addSeries(series1, data);
return dataset;
}
答案 0 :(得分:3)
在轴上使用setDateFormatOverride()
DateFormat
:
axis.setDateFormatOverride(new SimpleDateFormat("HH:mm"));