Subset a time-series using matlab -



Subset a time-series using matlab -

i have 1 min interval time series want subset 3 columns of data. time format dd/mm/yy hh:mm:ss want specify 20 min time value want extract corresponding samples corresponding days (19:00 ; 19:20 ; 19:40 ; 20:00).

i created time series using ts = timeseries(data, time) samples=getdatasamples(ts, i)

but having problem defining logical vector can such extraction

please seek code:

pat_19='19:[0 2 4]0:00'; pat_20='20:00:00'; out_19=~(cellfun('isempty',regexpi(a(:,1),pat_19,'match'))); out_20=~(cellfun('isempty',regexpi(a(:,1),pat_20,'match'))); out=a(find(out_19+out_20),:);

here, assumed value of seconds '0'

please see illustration below:

"a" cell array date first column , info values of time series.

a = '15/08/81 19:00:00' 0.01 '15/08/81 19:10:00' 0.02 '15/08/81 19:20:00' 0.03 '15/08/81 19:30:00' 0.04 '15/08/81 19:40:00' 0.06 '15/08/81 19:50:00' 0.07 '15/08/81 20:00:00' 0.01 '15/08/81 20:10:00' 0.02 '15/08/81 20:20:00' 0.03 '15/08/81 20:30:00' 0.03

after executing above code, output stored in cell array "out"

out = '15/08/81 19:00:00' 0.01 '15/08/81 19:20:00' 0.03 '15/08/81 19:40:00' 0.06 '15/08/81 20:00:00' 0.01

matlab time-series

Comments

Post a Comment

Popular posts from this blog

model view controller - MVC Rails Planning -

model view controller - MVC Rails Planning - i'm starting rails , i'm building app stores films info, user can watch film , give grade on web application. i have coded cinema model, controller , views. now, have 2 questions: should need create model , controller grading? in case, should create or should wait , create first users model , controller? yes, on model , controller grades. that'd feasible way maintain track of who's graded what. it's create first, i'd start users, since grades depend on both films , users. ruby-on-rails model-view-controller
Read more

ruby on rails - Devise Logout Error in RoR -

ruby on rails - Devise Logout Error in RoR - while using devise in ror, encountering unusual error when trying log out url different root url. displays me : actioncontroller::invalidauthenticitytoken in devise::sessionscontroller#destroy" for illustration if rooting path after log in '/structure', , seek log out '/general' error, while logging out '/structure' fine. any help highly appreciated. ruby-on-rails ruby devise
Read more

html - Submenu setup with jquery and effect 'fold' -

html - Submenu setup with jquery and effect 'fold' - i want open submenu jquery effect fold, problem if user "hover effect" fast menu remain open, how can avoid this, jquery code is: $('ul.mainmenu li').hover( function() { $(this).children('ul').show('fold', 570); }, function() { $(this).children('ul').hide('fold', 500); } ); my jsfiddle link is: http://jsfiddle.net/9wkbf/ updated fiddle the reason behind problem is, first event $(this).children('ul').show('fold', 570); queued , until completes, sec animation not start. the next snippet can workaround $('ul.mainmenu > li').hover( function() { $(this).children('ul').show('fold', 570); }, function() { $('ul:not(.mainmenu)').hide('fold', 500); } ); *important note : work current scenario. jquery html css
Read more