無法安裝包 RCurl

Question

我在 R 中的weatherData包中遇到了一些問題。當我使用此代碼時：

a <- read.csv(url("http://www.wunderground.com/history/airport/sfo/2016/1/1/CustomHistory.html?dayend=27&monthend=5&yearend=2016&req_city=NA&req_state=NA&req_statename=NA&format=1"), 
                  method ="libcurl")

我收到此錯誤：

Error in read.table(file = file, header = header, sep = sep, quote = quote,  : 
  unused argument (method = "libcurl")

在我搜索了一下之后，我才知道可能是因為我的 R 版本 3.2.1 中沒有安裝RCurl包。 但是當我開始安裝RCurl ，我得到了這個：

Cannot find curl-config
ERROR: configuration failed for package ‘RCurl’
* removing ‘/home/dell/R/x86_64-pc-linux-gnu-library/3.2/RCurl’
Warning in install.packages :
  installation of package ‘RCurl’ had non-zero exit status

我正在使用 Ubuntu 14.04。 誰能幫我嗎？

Answer 1

使用普通舊curl一種更簡單的方法，因為 url 內容不是csv而實際上是html ，然后清理 html，然后將其加載到 R 中：

$ curl 'https://www.wunderground.com/history/airport/sfo/2016/1/1/CustomHistory.html?dayend=27&monthend=5&yearend=2016&req_city=NA&req_state=NA&req_statename=NA&format=1' \ 
        > data.html

內容具有尾隨<br >標記

$ head -n 3 data.html 

PDT,Max TemperatureC,Mean TemperatureC,Min TemperatureC,DewPointC,MeanDew PointC,Min DewpointC,Max Humidity, Mean Humidity, Min Humidity, Max Sea Level PressurehPa, Mean Sea Level PressurehPa, Min Sea Level PressurehPa, Max VisibilityKm, Mean VisibilityKm, Min VisibilitykM, Max Wind SpeedKm/h, Mean Wind SpeedKm/h, Max Gust SpeedKm/h,Precipitationmm, CloudCover, Events,WindDirDegrees<br />

2016-1-1,9,6,3,0,-3,-6,76,57,38,1023,1021,1020,16,16,16,27,14,32,0.00,3,,90<br />

讓我們消除此標記並將其轉換為 csv。

$ cat data.html | perl -lpe 's|<br.*$||;' > data.csv

現在像往常一樣在 R 中加載它

$ R

d <- read.csv('data.csv')

colnames(d)

 [1] "PDT"                        "Max.TemperatureC"          
 [3] "Mean.TemperatureC"          "Min.TemperatureC"          
 [5] "Dew.PointC"                 "MeanDew.PointC"            
 [7] "Min.DewpointC"              "Max.Humidity"              
 [9] "Mean.Humidity"              "Min.Humidity"              
 [11] "Max.Sea.Level.PressurehPa"  "Mean.Sea.Level.PressurehPa"
 [13] "Min.Sea.Level.PressurehPa"  "Max.VisibilityKm"          
 [15] "Mean.VisibilityKm"          "Min.VisibilitykM"          
 [17] "Max.Wind.SpeedKm.h"         "Mean.Wind.SpeedKm.h"       
 [19] "Max.Gust.SpeedKm.h"         "Precipitationmm"           
 [21] "CloudCover"                 "Events"                    
 [23] "WindDirDegrees"