[英]How to display jFree chart for a table of values vs Time taken
I was trying to display values like Heartrate,blood pressure vs time taken. 我试图显示诸如“心率”,“血压与时间”之类的值。
How can I display like a bar graph using JFree chart?? 如何使用JFree图表像条形图一样显示?
Getting a NullPointerException
in my for loop 在我的for循环中获取NullPointerException
private CategoryDataset createDataset(VitalSignDirectory vitalSignDirectory) {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
for(VitalSign v : patient.getVitalSignDirectory().getVitalSignList()) {
String heartRate = String.valueOf(v.getHeartRate());
dataset.addValue(v.getRespRate(), heartRate, heartRate);
}
return dataset;
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.