How to combine data with repeating groups of values?
3 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Okay, so I have an array called weekNumber. The array was made by taking hourly dates and assigning a week number. (In other words, weekNumber is the weekNumber of hourly date strings.)
An example of the data in weekNumber is:
weekNumber = [53;53;53;53;1;1;1;1;1;1;2;2;2;2;]
What I want to do is combine any repeated values so that weekNumber looks like this:
weekNumber = [53; 1; 2;]
I can do this using:
[sorted,idx] = sort(weekNumber);
[~,ij] = unique(sorted,'first');
Indx = (sort(idx(ij)));
However, my week number data extends back for three years and my code attempts to combine weeknumbers from different years.
For example, week number 53 from year 2011 and week 53 from year 2012 will be combined.
I don't want this to happen!
I want to combine week numbers from there respective years only. I want the range of week numbers containing week x in year y to be combined.
A clear example of what I mean is as follows:
whatIHave = [1;1;1;2;2;2;3;3;3;4;4;4;2;2;2;1;1;1;5;5;5;2;2;2;2;1;1;1;1;]
whatINeed = [1;2;3;4;2;1;5;2;1;]
Can someone please help?
I had difficulty explaining my problem so if you are confused, just ask and I will try to clarify.
0 comentarios
Respuesta aceptada
Arthur
el 9 de Sept. de 2013
So you want the first weekNumber of every week? You can use diff.
whatINeed = weekNumber([true; diff(weekNumber) ~=0])
Más respuestas (0)
Ver también
Categorías
Más información sobre Dates and Time en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!