how to generate a matrix with 2 columns and changeable number of rows

12 visualizaciones (últimos 30 días)
Hello
I am new to the MATLAB and I need help
I want to generate a matrix with 2 columns and changeable number of rows according to user input. each number in the matrix will be more than the previous one with a certain number define by user. (in the example below I used 0.4)
here is the output that I am trying to obtain
[ 0 0
0.4 0
0.8 0
1.2 0
0 0.4
0.4 0.4
0.8 0.4
1.2 0.4
0 0.8
0.4 0.8
0.8 0.8
1.2 0.8
0 1.2
0.4 1.2
0.8 1.2
1.2 1.2 ]
any suggestions ??

Respuesta aceptada

Star Strider
Star Strider el 22 de Feb. de 2019
use the meshgrid (link) function (or optionally ndgrid (link)):
step = 0.4;
v = 0 :step : 3*step;
[X,Y] = meshgrid(v);
OutMg = [Y(:), X(:)];
step = 0.4;
v = 0 :step : 3*step;
[X,Y] = ndgrid(v);
OutND = [X(:), Y(:)];
Choose the function that most closely approximates what youwant to do. Here, they both produce the same result.

Más respuestas (2)

Steven Lord
Steven Lord el 22 de Feb. de 2019
Call the meshgrid function and reshape the outputs from meshgrid into column vectors.

Walter Roberson
Walter Roberson el 22 de Feb. de 2019
[C1, C2] = ndgrid((0:num_increments-1) * increment_value);
output = [C1(:), C2(:)];

Categorías

Más información sobre Particle & Nuclear Physics en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

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

Start Hunting!

Translated by