yammer - Web scraping password protected website using R -


i web scrap yammer data using r,but in order first il have login page,(which authentication app created).

https://www.yammer.com/dialog/authenticate?client_id=ivgck1tohbzgs7zc8dpjg

i able yammer data once login page in browser standard yammer urls (https://www.yammer.com/api/v1/messages/received.json)

i have read through similar questions , tried suggestions still cant through issue.

i have tried using httr,rselenium,rvest+selector gadget.

end goal here in r (getting data,cleaning,sentiment analysis...the cleaning , sentiment analysis part done of getting data part manual , automate handling r)

1.trial using httr:

usinghttr<- get("https://www.yammer.com/dialog/authenticate?client_id=ivgck1tohbzgs7zc8dpjg",      authenticate("username", "password"))

corresponding result : response [https://www.yammer.com/dialog/authenticate?client_id=ivgck1tohbzgs7zc8dpjg] date: 2015-04-27 12:25 status: 200 content-type: text/html; charset=utf-8 size: 15.7 kb content of page showed has opened login page didnt authenticate.

2.trial using selector gadget + rvest

i tried scraping wikipedia using method couldnt apply yammer authentication required prior calling html tag selctor gadget gives.

3.trial using rselenium

tried using standard browsers , phantomjs got errors 

> startserver()

remdr <- remotedriver$new()

remdr$open() [1] "connecting remote server" undefined error in rcurl call. error in queryrd(paste0(serverurl, "/session"), "post", qdata = tojson(serveropts)) : 

> pjs <- phantom()

error in phantom() : phantomjs binary not located.

i spent long time manage access password-protected sites inside r. managed submitting credentials html form. had quick login page on yammer , seems similar case managed have access.

here code used. need adapt context: first start session on login page, reach form collects id , password , submit form. think in case, code below work:

session <- html_session("https://www.yammer.com/dialog/authenticate?client_id=ivgck1tohbzgs7zc8dpjg")     login_form <- session %>% html_nodes("form") %>%     .... %>%  #instructions lead login form, e.g. extract2(1)                     html_form() %>%                     set_values(`login` = yourid,`password` = yourpasswd)        logged_in=session %>%  submit_form(login_form))

logged_in should contains session information after logging in.

br


-

Popular posts from this blog

c# - ODP.NET Oracle.ManagedDataAccess causes ORA-12537 network session end of file -

overview i want replace oracle.dataaccess orcale. managed dataaccess, opening connection latter throws ora-12537 network session end of file exception. exception message / stack trace {oracleinternal.network.networkexception (0x000030f9): ora-12537 : netzwerksession: dateiende @ oracleinternal.network.readerstream.read(orabuf ob) @ oracleinternal.ttc.orabufreader.getdatafromnetwork() @ oracleinternal.ttc.orabufreader.read(boolean bignoredata) @ oracleinternal.ttc.marshallingengine.unmarshalub1(boolean bignoredata) @ oracleinternal.ttc.ttcprotocolnegotiation.readresponse()} i trying connect oracle 11g database , not have client installed on local machine. working test application (unmanaged) using oracle.dataaccess works fine . using system; using oracle.dataaccess.client; namespace app.odp.unmanaged { internal class program { private static void main(string[] args) { //dummy connection string...
Read more

matlab - Compression and Decompression of ECG Signal using HUFFMAN ALGORITHM -

i want compress , decompress ecg signal stored text message text file , find out file size, cr,prd ratio,and qs. here code compression , decompression of ecg signal using huffman algorithm. i'm trying find out file size, compression ratio,prd ratio,qs. but error i'm getting the ecg file in text format. %clearing variables , screen enter code here clear all; close all; clc; [file1]=uigetfile('*.txt'); %fprintf('enter ecg file name :%s',file1); p=file1; t=sprintf('%s',p); b1=dlmread([file1]); len=length(b1); lead=input('enter lead number :'); %lead=str2double(lead); col2=b1(1:end,lead); e=fix(sqrt(len)); m=1; i=1:e j=1:e g2(i,j)=fix(col2(m)*1000); %amplifying 1000 m=m+1; end end g3=g2; i=1:e j=1:e ...
Read more

utf 8 - split utf-8 string into bytes in python -

i trying split utf-8 string bytes in python 3. problem is, when use bytearray, byte, encode etc functions array size of element 14 bytes, not 1 byte expected. need split text file sequence of bytes , send them byte after byte using sockets. tried this: infile = open (file, "r") str = infile.read() byte_str = bytes(str, 'utf-8') print("size of byte_str",sys.getsizeof(byte_str[0])) print gives me 14, need 1... suggestion? quoting official documentation : sys.getsizeof(object[, default]) return size of object in bytes. object can type of object. built-in objects return correct results, not have hold true third-party extensions implementation specific. only memory consumption directly attributed object accounted for, not memory consumption of objects refers to. if given, default returned if object not provide means retrieve size. otherwise typeerror raised. getsizeof() calls object’s __sizeof__ method , adds ...
Read more