How to add time from 2 arrays
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
SS
am 16 Okt. 2014
Beantwortet: Andrei Bobrov
am 16 Okt. 2014
Hi, I am a new user of Matlab. I have the following problem:
I have two columns like this way.
- a =102 sec
- a =135
- a =157
- b =189
- b =201
- a =222
- a =245
- b =290
Here the values are in seconds. I want to write a formula, which show the total duration of seconds of a and b.
For example: here total duration of a is = (157-102) + (245-222) = 78 seconds.
Please suggest me how to do it.
Thanks
6 Kommentare
José-Luis
am 16 Okt. 2014
So is your variable a table or do you have two column vectors: one with strings and the other with numbers?
Akzeptierte Antwort
Andrei Bobrov
am 16 Okt. 2014
C = {'a' 102
'a' 135
'a' 157
'b' 189
'b' 201
'a' 222
'a' 245
'b' 290}
cn = [C{:,2}]';
[~,~,c1] = unique(C(:,1));
t = [true;diff(c1)~=0];
s1 = accumarray(cumsum(t),cn,[],@(x)x(end)-x(1));
out = accumarray(c1(t),s1);
0 Kommentare
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Characters and Strings finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!