Read specific lines from HTML in R -

-

आर

HTMLInternalDocument "निम्नलिखित कोड के परिणामस्वरूप वस्तु: 

  url & lt; -myURL html & lt; -htmlTreeParse (url, useInternalNodes = T)

अब मुझे मिलना चाहिए उदाहरण के लिए प्रत्येक पंक्ति में वर्णों की संख्या की गणना करने के लिए पाठ स्वरूप में इस html ऑब्जेक्ट से एक विशिष्ट पंक्ति।

मैं आर में ऐसा कैसे कर सकता हूं?

यह देखते हुए कि आप XML पुस्तकालय का उपयोग कर रहे हैं, आपको पुस्तकालय के getNodeSet फ़ंक्शंस जैसे xpathApply । इसको xPaths पर कुछ ज्ञान की आवश्यकता है, जो फ़ंक्शन HTMLInternalDocument को पार्स करने के लिए उपयोग करता है आप ? XpathApply

का उपयोग करके अधिक जान सकते हैं

Comments

Post a Comment

Popular posts from this blog

java - org.apache.http.ProtocolException: Target host is not specified -

-
I have written a simple httprequest / response code and I am getting this error below: I used to type in my classpath httpclient, httpcore, common -Codecs and general logging. I am very new to Java and I do not know what's going on here. Please help me. code: import org.apache.http.client.HttpClient; Import org.apache.http.client.methods.HttpGet; Import org.apache.http.HttpResponse; Import org.apache.http.impl.client.HttpClientBuilder; Import org.apache.http.Header; Import org.apache.http.HttpHeaders; Public class UnshorteningUrl {public static zero main (string [] args throws exception {HttpGet request = zero; HTTP Client Client = HTTP ClientBuilder.credit (). Build (); Try {Request = New HTTP Gate ("trib.me/1lBFzSi"); HttpResponse httpResponse = client.execute (request); Header [] header = httpResponse.getHeaders (HttpHeaders.LOCATION); // Preconditions.checkState (headers.length == 1); String new url = header [0] .getValue (); System.out.println ("new url...
Read more

objective c - How to open front/back camera at the same time in iOS developing? -

-
I want to use the front and rear camera at the same time in iOS development: when I take a photo back After the camera, the front camera can be opened and another can take a photo. By the way, these two photos are in a picture: vertical arrangement. Has anyone done this before? UIImagePickerController to take the picture, and to determine which camera is used Is in. / P> To merge the pictures, I found an example through search (its recommendation in the future)
Read more

xml - XMLStarlet - UTF-8 Nordic characters -

-
To use an XMLStarlet (windows) to edit an RSS feed, but the Norwegian letter 'ANSA' There are some issues with. I am using an example found on this site () This is my feed. Xml is (Notepad ++ says it is encoded in UTF-8) I am not using the following example because it is for Linux script, but my long command line is similar. # ! / Bin / sh TITLE = "Test Title ÆØÅ" LINK = "http://www.example.com" DATE = "` Saturday, 26 July 2014 01:14:30 + 0200` "xmlstarlet ed -l -a" / / Channel "-tmm-nmad-v" "\ -s" // item [1] "-t emil - t-- v" $ tITLE "\ -s" // item [1] "-t Elem -n link -v "$ LINK" \ -s "// item [1]" -t elem -n pubDate -v "$ DATE" \ -d "// item [condition ()> 10]" Feed .xml; Windows Command Line (What I'm using): xml.exe ed -l -a "// channel" -t elem - N item-v "" -s "// item [1]" -t elem -n title -v...
Read more