Question

if(ISSUES$VEHICLE_KM_READING <= 10000){
ISSUES$KMRANGE <- '10K'
} else if(ISSUES$VEHICLE_KM_READING <= 20000 & ISSUES$VEHICLE_KM_READING > 
10000){
  ISSUES$KMRANGE <- '20K'
} else if(ISSUES$VEHICLE_KM_READING <= 30000 & ISSUES$VEHICLE_KM_READING > 
20000){
  ISSUES$KMRANGE <- '30K'
} else if(ISSUES$VEHICLE_KM_READING <= 40000 & ISSUES$VEHICLE_KM_READING > 
30000){
  ISSUES$KMRANGE <- '40K'
} else if(ISSUES$VEHICLE_KM_READING <= 50000 & ISSUES$VEHICLE_KM_READING > 
40000){
  ISSUES$KMRANGE <- '50K'
} else if(ISSUES$VEHICLE_KM_READING <= 60000 & ISSUES$VEHICLE_KM_READING > 
50000){
  ISSUES$KMRANGE <- '60K'
} else if(ISSUES$VEHICLE_KM_READING <= 70000 & ISSUES$VEHICLE_KM_READING > 
60000){
  ISSUES$KMRANGE <- '70K'
} else if(ISSUES$VEHICLE_KM_READING <= 80000 & ISSUES$VEHICLE_KM_READING > 
70000){
  ISSUES$KMRANGE <- '80K'
} else if(ISSUES$VEHICLE_KM_READING <= 90000 & ISSUES$VEHICLE_KM_READING > 
80000){
  ISSUES$KMRANGE <- '90K'
} else if(ISSUES$VEHICLE_KM_READING <= 100000 & ISSUES$VEHICLE_KM_READING > 
90000){
  ISSUES$KMRANGE <- '100K'
} else {
  ISSUES$KMRANGE <- 'MORETHAN100K'
} 
 Warning messages:
1: In if (ISSUES$VEHICLE_KM_READING <= 10000) { :
  the condition has length > 1 and only the first element will be used
2: In if (ISSUES$VEHICLE_KM_READING <= 20000 & ISSUES$VEHICLE_KM_READING >  
:
  the condition has length > 1 and only the first element will be used
3: In if (ISSUES$VEHICLE_KM_READING <= 30000 & ISSUES$VEHICLE_KM_READING >  
:
  the condition has length > 1 and only the first element will be used

执行上述语句后，KMRANGE列中的所有值均相同。有人可以让我知道我的代码哪里出问题了。还是'IF'语句的逻辑在这里不起作用。

使用if，if else根据小标题中另一列的值更新一列中的值

0 个答案: