construct meshgrid matrices without using function meshgrid.
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi, I am going to construct meshgrid matrices1 x(i, j), y(i, j), given the grid points x=[0: 0.1:10], y=[0:0.2:10]. when I try x.*y.'. It can't go through. I know I can produce an mn matrix C with elements C(i, j) = x(i)y(j), i=1:m, j= 1:n. But I dunno how can I start with.
0 commentaires
Réponse acceptée
Image Analyst
le 14 Déc 2014
Try this:
% Sample data.
x = [0 : 1 : 10] % Change the middle "step" number if you want.
y = [0 : 2 : 10]
% Traditional way using meshgrid().
[X, Y] = meshgrid(x, y)
% Alternate way using loop.
rows = length(y);
columns = length(x);
xLoop = zeros(rows, columns);
yLoop = zeros(rows, columns);
for column = 1 : length(x)
xLoop(:, column) = x(column);
yLoop(:, column) = y;
end
% Print to command window.
xLoop
yLoop
Plus de réponses (1)
Mert Yiyit
le 5 Déc 2018
function [A,B] = mgrid(x,y)
m = length(x);
n = length(y);
for i= 1:n
for j= 1:m
A(i,j) = x(1,j);
end
end
for q = 1:m
for z = 1:n
B(z,q) = y(1,z);
end
end
1 commentaire
Stephen23
le 5 Déc 2018
Modifié(e) : Stephen23
le 5 Déc 2018
Note that the outputs A and B should be preallocated, as Image Analyst's answer from four years ago shows.
Voir également
Catégories
En savoir plus sur Surface and Mesh Plots dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!