Hello, I have a data with two variables nodes and index, I want to extract 3 months seasons, with a shift of 1 month, that is, DJF, JFM, FMA etc to OND. Was wondering how to go about it. Kindly find data sample below, data is in csv format. Any help will be appreciated.
My data sample; era...1. Node_freq MEI 1 1980-01-01 -0.389855332 0.3394196488 2 1980-02-01 -0.728019153 0.2483738232 3 1980-03-01 -1.992457784 0.3516954904 4 1980-04-01 0.222760284 0.5736836269 5 1980-05-01 0.972601798 0.6289249144 6 1980-06-01 0.570725954 0.5736836269 7 1980-07-01 -0.977966324 0.4120517119 8 1980-08-01 0.056128836 -0.0104418383 9 1980-09-01 0.987304573 -0.0687520861 10 1980-10-01 1.188242495 -0.1403611624 11 1980-11-01 1.693037763 -0.0963727298 12 1980-12-01 1.173539720 -0.2539126977 13 1981-01-01 0.423698206 -0.6140040528 14 1981-02-01 -2.208098481 -0.5209122536 15 1981-03-01 -0.786830252 0.1133395650 16 1981-04-01 -0.110502611 0.3302127675 17 1981-05-01 -1.272021820 -0.1894645290 18 1981-06-01 0.394292656 -0.3736021538 19 1981-07-01 1.452892441 -0.4032687711 20 1981-08-01 0.698150002 -0.4441882433 21 1981-09-01 0.997106423 -0.1720737534 22 1981-10-01 0.247264908 -0.2436828296 23 1981-11-01 0.771663876 -0.3909929295 24 1981-12-01 -0.316341458 -0.4943145967 Regards, Kwesi -- Try not to become a man of success but rather a man of value-Albert Einstein University of Cape Coast|College of Agriculture and Natural Sciences|Department of Physics| Team Leader|Recycle Up! Ghana|Technology Without Borders| Other emails: kwesi.quagra...@ucc.edu.gh|kwesi.quagra...@teog.de| Mobile: +233266173582 Skype: quagraine_cwasi Twitter: @Pkdilly [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.