How to create empty indexes when not available?
5 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Dc215905
el 21 de Mayo de 2021
For example:
Say:
data = [2,3,4,5,3,2,4,5]
I want to only look at a subset of the data starting from the 5th index +/-2 of data:
window = data(5-2:5+2)
window =
4 5 3 2 4
That works no problem because the data exisit.
Now say I want to look a the data starting from the 5th index -10/+2
window = data(5-10:5+2)
window = 'Array indices must be positive integers or logical values.'
Since there are not 10 indices available before the 5th index this won't work.
Is there a way to automatically fill indexes that don't exist with 'NaN' and fill the rest do the final output would look something like:
window =
NaN NaN NaN NaN NaN NaN 2 3 4 5 3 2 4
Any help would be greatly appreciated.
Thanks!
0 comentarios
Respuesta aceptada
Stephen23
el 21 de Mayo de 2021
Editada: Stephen23
el 21 de Mayo de 2021
data = [2,3,4,5,3,2,4,5];
x = 5;
n = 10;
p = 2;
window = data(max(1,x-n):min(end,x+p))
Are the NaNs really required?
Más respuestas (0)
Ver también
Categorías
Más información sobre Search Path 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!