Azzera filtri
Azzera filtri

How to merge and slice arrays of different sizes?

13 visualizzazioni (ultimi 30 giorni)
HC98
HC98 il 28 Gen 2023
Risposto: Chris il 28 Gen 2023
Say I have one aray called `ydata` which has dimension 1x24000 and I want to slice a part of this array, say from index 2:3000 and merge it with another array we shall call `udata` which is itself 1x24000. How might I slice the bit I want from `ydata` and then merge it with `udata` if that makes sense?
I suppose what it boils down to is this:
  1. we have 2 arrays with the same dimension
  2. I want to slice a part from array 1 and merge it with array 2
Is this possible?
  3 Commenti
HC98
HC98 il 28 Gen 2023
Slice and merge with the second array, i.e., add it on
Chris
Chris il 28 Gen 2023
Modificato: Chris il 28 Gen 2023
Are they double arrays? String arrays? chars? Do you want to add a second row to the array containing that slice?
u = randi(10,1,5);
y = randi(10,1,5);
u(2,2:4) = y(1,2:4)
u = 2×5
8 1 2 7 5 0 10 8 9 0

Accedi per commentare.

Risposte (2)

cdawg
cdawg il 28 Gen 2023
Modificato: cdawg il 28 Gen 2023
I'm not totally sure if you mean add it as a new row to the second array or append the first array to the end of the second.
If you want to just append part of it to the end you can do this:
ydata = [2 1 9 10 11];
udata = [1 2 3 4 5];
newArray = [udata ydata(2:4)] % append indices 2 through 4 to the end of udata
newArray = 1×8
1 2 3 4 5 1 9 10
If you want to append part of ydata to a new row of udata, they need to have the same number of columns:
newArray = [udata(2:4); ydata(2:4)]
newArray = 2×3
2 3 4 1 9 10
Hope this helps

Chris
Chris il 28 Gen 2023
Perhaps you'd be better off with a cell array.
ydata = randi(9,1,8)
ydata = 1×8
7 7 8 4 1 9 1 3
ydata = num2cell(ydata)
ydata = 1×8 cell array
{[7]} {[7]} {[8]} {[4]} {[1]} {[9]} {[1]} {[3]}
udata = num2cell(randi(9,1,8))
udata = 1×8 cell array
{[7]} {[2]} {[7]} {[2]} {[1]} {[3]} {[8]} {[7]}
udata(2,2:6) = ydata(1,2:6)
udata = 2×8 cell array
{[ 7]} {[2]} {[7]} {[2]} {[1]} {[3]} {[ 8]} {[ 7]} {0×0 double} {[7]} {[8]} {[4]} {[1]} {[9]} {0×0 double} {0×0 double}

Prodotti


Release

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by