Strange behavior of strsplit() in R? -


मैं स्ट्रिंग x = "a, b," को विभाजित करना चाहूंगा strsplit () का उपयोग करके वेक्टर c ("a", "b", "") में ।

परिणाम है: < / P> 

  & gt; strsplit (x, ',') [[1]] [1] "a" "b"

मुझे यह पसंद है तीसरा घटक (रिक्त स्ट्रिंग या नल)।

फ़ंक्शन read.csv (x) उस का प्रबंधन कर सकता है, लेकिन फिर भी मुझे लगता है कि strsplit () जैसा कि मैंने उम्मीद की थी व्यवहार करना चाहिए c ("a", "b", "") देता है।

शायद strsplit () का कोई विकल्प नहीं है मुझे नहीं पता

इसी तरह यह काम करता है और मदद (strsplit) में प्रलेखित है: 

  ध्यान दें कि इसका अर्थ है कि यदि (गैर खाली) स्ट्रिंग की शुरुआत में एक मैच होता है, तो आउटपुट का पहला तत्व '' '' है, लेकिन अगर इसके अंत में एक मैच होता है स्ट्रिंग, आउटपुट मैच के समान के समान है I

आप str_split से stringr पैकेज का उपयोग करना चाह सकते हैं: 

  & gt; आवश्यकता (स्ट्रिंगर) & gt; Str_split ("a, b,", ",") [[1]] [1] "एक" "बी" "" & gt; Str_split ("a, b", ",") [[1]] [1] "एक" "बी" & gt; Str_split (", a, b", ",") [[1]] [1] "" "एक" "बी" & gt; Str_split (", a, b ,,,", ",") [[1]] [1] "एक" "बी" "" "" ""

-

Comments

Post a Comment

Popular posts from this blog

sip - Call SipJs to Asterisk 12 -

I am trying to call Asterisk 12 from SIPJ. My partner is here [6002]] type = friend secret = 6002 host = dynamic reference = public transport = ws avpf = yes icesupport = no encryption = no And my JSP code is here var configuration = {'ws_servers':' ws: //192.168.0.102: 8088 / ws', 'Yuri': 'SIP: 6002 @ 192.168.0.102 ',' Password ':' 6002 '}; Var option = {'EventHolders': EventHandler, 'Media Consultants': {'Audio': True, 'Video': Incorrect}}; Function call () {quietphonecall ('sip: 6003@192.168.0.102', option); } It is properly registered, but when I call "call" function asterisk logs this error secure without encryption details Rejecting Audio Stream: Audio 46421 RTP / SAVPF 111 103 104 0 8 106 105 13 126 JSSIp error is here Call failed with reason: Incompatible SDP Can someone help me? First of all, you will have to create a certificate for DTLS. Then enabl...
Read more

Python Equivalent for matlab cart2pol and pol2cart -

I would like to use pol2cart and cart2pol for two functions in MATLAB. Is there an equivalent Python Function? Or if we can define work? For example, I tried to use the CeMatePactor function, but it only accepts one argument, I have 2 arguments to cross the polar and REC function. P> I have tried to use this function for cart2pol: def cart2pol (x, y): theta = atan2 (y, x) rho = Sqrt (x ** 2 + y ** 2) returns (theta, ro) thanks
Read more

Docker - Tomcat and PostgreSQL containers in same host - No Route to host -

I have a web application running on Tomcat and has started the container using the command, Docker run -d -p 8080: 8080 tveuser / tve-repository: tve-services I also run a PostgreSQL container on the same host using the following command am: Docker run-D-P 80: 80-P-5432: 5432 Tivejhr / Tive-repository: TV-post-Jiaracl I Verify that PostgreSQL is running using phpPgAdmin but Neither could it find the tomato to connect. 'Docker PS' also tells me that both the containers are up and running. I connect the web entry to the database through the TOKamet Reference.XML which contains the entry & lt; Parameter Name = "abc.connection.url" value = "jdbc: postgresql: //1.2.3.4: 5432 / dbname" /> Where 1.2.3.4 is the Dockers Host IP in which the Container is Running. But when I run the Tomcat Container, I get the following error: Org.postgresql.util.PSQLException: The connection attempt failed. On Org.postgresql.core.v3.ConnectionFactoryI...
Read more