Borrar filtros
Borrar filtros

replace not selected value by zero

2 visualizaciones (últimos 30 días)
HASAN AL-KAF
HASAN AL-KAF el 28 de En. de 2018
Comentada: Star Strider el 28 de En. de 2018
Hi I have 10 values. my code select 3 values, for example, if x=[1 2 3 4 5 6 7 8 9 10] and my code select [1 3 5] i want a code to do this x= [1 0 3 0 5 0 0 0 0 0]?.

Respuesta aceptada

Star Strider
Star Strider el 28 de En. de 2018
This works:
x=[1 2 3 4 5 6 7 8 9 10];
ToKeep = [1 3 5];
idx = ismember(x, ToKeep);
Result = x .* idx
Result =
1 0 3 0 5 0 0 0 0 0
  2 comentarios
Image Analyst
Image Analyst el 28 de En. de 2018
Totally different than what I did and that made me see the ambiguity. We need Hasan to clarify if the [1,3,5] are the indexes of x that should be kept (like I assumed), or the values of x that should be kept (like you assumed).
Star Strider
Star Strider el 28 de En. de 2018
‘I have 10 values. my code select 3 values,’
I interpret ‘values’ as indicating array elements.

Iniciar sesión para comentar.

Más respuestas (1)

Image Analyst
Image Analyst el 28 de En. de 2018
Here's one way:
x=[1 2 3 4 5 6 7 8 9 10]
mask = [1 3 5]
x2 = zeros(1, length(x)); % Initialize x2
x2(mask) = x(mask) % Pull over values in the mask from x and put them in the same column.

Categorías

Más información sobre Matrices and 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