Question

我正在从某些传感器接收数据。但是上周出现了一些问题，导致一些传感器发送了错误和异常的值。例如。 + 678摄氏度和-456摄氏度。

但这一天仅发生几次，并且也有很多正常数据输入。所以我不能只过滤掉日子，我只想过滤掉错误的值。

我试图创建一个自定义列，其中我有一个if语句将错误的值设置为1并将det normal设置为0，然后只删除所有具有1的行。但是当我知道那里的时候，我只收到0是一些假定为1的行。

这是我的if语句：

if [Sensor Type] = "Temperature" and [SensorValue] > 60 and [SensorValue] < 0 then 1
else if [Sensor Type] ="Humidity" and [SensorValue] > 90 and [SensorValue] < 1 then 1 
else if [Sensor Type] = "CO2" and [SensorValue] > 1200 and [SensorValue] < 1 then 1
else if [Sensor Type] = "Openings" and [SensorValue] > 4000 and [SensorValue] < 1 then 1
else 0

在此列中，我只会得到0。

有人可以帮助我吗？还是您有其他方法可以滤除错误的值？

谢谢！

Answer 1

温度不能同时大于60 小于0。为了正确起见，您的支票应为[Sensor Type] = "Temperature" and ([SensorValue] > 60 or [SensorValue] < 0)，因此类似这样：

if [Sensor Type] = "Temperature" and ([SensorValue] > 60 or [SensorValue] < 0) then 1
else if [Sensor Type] ="Humidity" and ([SensorValue] > 90 or [SensorValue] < 1) then 1 
else if [Sensor Type] = "CO2" and ([SensorValue] > 1200 or [SensorValue] < 1) then 1
else if [Sensor Type] = "Openings" and ([SensorValue] > 4000 or [SensorValue] < 1) then 1
else 0

如果您采取相反的操作，可能会更容易理解：

if [Sensor Type] = "Temperature" and [SensorValue] > 60  then 0
else if [Sensor Type] = "Temperature" and [SensorValue] < 0 then 0
else if [Sensor Type] ="Humidity" and [SensorValue] > 90 then 0
else if [Sensor Type] ="Humidity" and [SensorValue] < 1 then 0 
else if [Sensor Type] = "CO2" and [SensorValue] > 1200 then 0
else if [Sensor Type] = "CO2" and [SensorValue] < 1 then 0
else if [Sensor Type] = "Openings" and [SensorValue] > 4000 then 0
else if [Sensor Type] = "Openings" and [SensorValue] < 1 then 0
else 1

筛选出较高和较低的值-Power BI

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