[英]Displaying an array of integers does not work
我有以下代码用于通过检测QRS峰值从ECG信号计算心律:
public class Heart_Rate {
public static void main(String[] args) throws IOException{
// Read Text file
Path filePath = Paths.get("heartrate.txt");
Scanner scanner = new Scanner(filePath);
List<Double> rawData = new ArrayList<Double>();
while (scanner.hasNext()) {
if (scanner.hasNextDouble()) {
rawData.add(scanner.nextDouble());
} else {
scanner.next();
}
}
System.out.println(rawData);
//Find Max value for Threshold Level
Double maximum = Collections.max(rawData);
Double threshold = 0.7*maximum;
System.out.println("Maximum = " + maximum);
System.out.println("Threshold = " + threshold);
//Calculate Heart Rate from list "Raw Data"
int upflag = 0;
int last = 1;
int p = 0;
int t = 0;
int count = 0;
//List<Double> heartRate = new ArrayList<Double>();
int heartRate2[] = new int[50];
for (int i = 0; i < rawData.size(); i++) {
if (rawData.get(i)> threshold){
if (upflag == 0){
if (last > 0){
t = i - last;
p = 100*60/t;
//100 is the sampling rate
heartRate2[count] = p;
count = count + 1;
//heartRate.add(p);
}
last = i;
}
upflag = 50;
}
else {
if (upflag > 0){
upflag = upflag -1;
}
}
}
System.out.println("Count = " + count);
System.out.println("Heart Rate = " + heartRate2);
System.out.println("Heart Rate = " + heartRate2);
}
}
当我将计算出的心率值(p)添加到ArrayList(称为HeartRate)时,我收到了一个适当的值数组。 但是,我尝试将所有值都更改为int并将其值保存在一个整数数组中(称为heartRate2),我得到以下结果:心率= [I @ dd1e765我需要将我的值设为整数,因为心率是按心跳计算的每分钟。 我还尝试将double值转换为int,但最终收到与上述类似的结果。
使用Arrays.toString(arr)
为某些数组arr
获取有意义的String
表示形式。
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