r - 如何在R中对具有不同范围值的多个列进行子集化？

Question

我有一个train_cab包含以下信息的数据集：

fare_amount pickup_datetime pickup_longitude pickup_latitude dropoff_longitute dropoff_latitude

4.5           1245066981            -73.8            40.7            -73.8             40.7

16.9          1262690536            -74.0            40.7            -74.0             40.8

5.7           1313607900            -74.0            40.8            -74.0             40.8

7.7           1334962842            -74.0            40.7            -74.0             40.8

5.3           1268101260            -74.0            40.8            -74.0             40.8

12.1          1294287645            -74.0            40.7            -74.0             40.8

7.5           1353423900            -74.0            40.8            -74.0             40.8

16.5          1325677920            -74.0            40.8            -74.0             40.8

15.0          1354520400            -74.0            40.7            -74.0             40.7

8.9           1251834060            -74.0            40.7            -74.0             40.8

我想对它进行切片并使用仅在范围内的特定值；我使用下面的代码对其进行子集化：

subset(train_cab, (fare_amount >= 2.50 & fare_amount<=600))
subset(train_cab,(pickup_latitude >= -73.00 & pickup_latitude <= 74.83)) 
subset(train_cab,(dropoff_latitude >= -73.00 & dropoff_latitude <= 74.83))
subset(train_cab,(pickup_longitude >= -74.025 &  pickup_longitude <= 74.930))
subset(train_cab,(dropoff_longitude >= -73.00 & dropoff_longitude <= 74.83))
subset(train_cab,(passenger_count >= 1 & passenger_count <= 7))

代码执行良好，没有任何错误，但检索到空白数据帧。

我要去哪里错了。我将不胜感激。

我通过将主数据框分配为：

  train_cab <- subset(train_cab, (fare_amount >= 2.50 & fare_amount<=600))
  train_cab <- subset(train_cab,(pickup_latitude >= -73.00 & pickup_latitude <= 74.83)) 
  train_cab <- subset(train_cab,(dropoff_latitude >= -73.00 & dropoff_latitude <= 74.83))
  train_cab <- subset(train_cab,(pickup_longitude >= -74.025 &  pickup_longitude <= 74.930))
  train_cab <- subset(train_cab,(dropoff_longitude >= -73.00 & dropoff_longitude <= 74.83))
  train_cab <- subset(train_cab,(passenger_count >= 1 & passenger_count <= 7))

但是此代码正在删除纬度和经度列中的所有正值。

标签： rsubsetslice