How to define array without size and append values

37 visualizaciones (últimos 30 días)
NoYeah
NoYeah el 14 de Abr. de 2020
Comentada: NoYeah el 14 de Abr. de 2020
in C++, by using the vector API
we can create empty array and append values.
//for C++
vector<float> v;
v.push_back(2.3);
v.push_back(3.1);
v.push_back(4.5);
then we got
v[0]=2.3
v[1]=3.1
v[2]=4.5
How to implement that in Mathlab?
I have read the tutorial but it said the limited dimension is required when I want to create empty array
like
Array = int16.empty(5,0)

Respuesta aceptada

Walter Roberson
Walter Roberson el 14 de Abr. de 2020
Array = [];
Array(end+1,1) = 2.3;
Array(end+1,1) = 3.1;
Array(end+1,1) = 4.5;
Caution: this is not as efficient as if you can pre-allocate. Every time you add on to the end, MATLAB has to create a new internal version of the array with one more slot in it, and copy the values from the old array to the new array and put on the new value. MATLAB is weak on growing-in-place

Más respuestas (0)

Categorías

Más información sobre Multidimensional Arrays 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!

Translated by