find values from a matrix according to a criterion
Afficher commentaires plus anciens
I have a time series of measurements as follows:
time = [733774,733774,733775,733775,733775,733776,733776];
data = [1,1.3,1,2.5,2.5,1,1.2];
Final = [time',data'];
I want to create a new variable that only contains the values that contain more than two measurements for individual days. So, from the example above, the result should be:
newData = [[733775;733775;733775],[1;2.5;2.5]];
Réponse acceptée
Plus de réponses (1)
Thomas
le 17 Sep 2012
Something like this
time = [733774,733774,733775,733775,733775,733776,733776];
data = [1,1.3,1,2.5,2.5,1,1.2];
Final = [time',data'];
unique_days=unique(time);
for ii=1:length(unique_days)
count(ii)=sum(unique_days(ii)==time);
end
idx=find(count>2);
% If there is more than 1 day with 3 or more readings
for jj=1:length(idx)
idx_time(jj,:)=find(time==unique_days(idx(jj)));
newTime=time(idx_time(jj,:))
newData=data(idx_time(jj,:))
end
Catégories
En savoir plus sur Standard File Formats dans Centre d'aide et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!