[問題] function內判讀文字資料
cityfreq<-function(area){
a<-as.character(data$city)
city<-c(a)
for(i in 1:length(data$city)){
if(city[i]=="area"){
city[i]<-1
}else{
city[i]<-0
}
}
numcity<-as.numeric(city)
freq<-sum(numcity)
print(freq)
}
cityfreq(Taipei) #預計算的城市
以上是我的程式碼，這樣是無法得到欲求的結果，想請教一下是否function不能夠放欲判讀問子項目?僅能做數值運算?
謝謝
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