Save array in matrix from for loop

4 次查看（过去 30 天）
Karl Zammit
Karl Zammit 2021-12-11
评论： Karl Zammit 2021-12-12
I am trying to save two arrays (called pstar A and pstarB) in matrix form such that I can than plot each value as a point against the value of x, however, I am being presented with the error "Unable to perform assignment because the left and right sides have a different number of elements."
Any clues on how to do so and how to obtain the plot thereafter?
for x=xo:((xf-xo)/divnum):xf
% radial coordinate
rA = x*bA;
rB = x*bB;
% pressure due to rotation and radial variability
pabsA = (rho*(swirl^2)*(omegaA^2)*((rA^2)-(r0A^2))/2)-((rho*(avolflowA.^2))/(8*(pi^2)*(sA^2)*((rA^2)-(r0A^2))));
pabsB = (rho*(swirl^2)*(omegaB^2)*((rB^2)-(r0B^2))/2)-((rho*(avolflowB.^2))/(8*(pi^2)*(sB^2)*((rB^2)-(r0B^2))));
% pstar
pstarA = pabsA / (rho*(omegaA^2)*(bA^2));
pstarB = pabsB / (rho*(omegaB^2)*(bB^2));
psA = [pstarA, psA+1];
psB = [pstarB, psB+1];
counter = counter+1;
end

请先登录，再回答此问题。

采纳的回答

KSSV
KSSV 2021-12-11
编辑：KSSV 2021-12-11
X=xo:((xf-xo)/divnum):xf
N = length(X) ;
pstarA = cell(N,1) ;
pstarB = cell(N,1) ;
for i = 1:N
x = X(i) ;
% radial coordinate
rA = x*bA;
rB = x*bB;
% pressure due to rotation and radial variability
pabsA = (rho*(swirl^2)*(omegaA^2)*((rA^2)-(r0A^2))/2)-((rho*(avolflowA.^2))/(8*(pi^2)*(sA^2)*((rA^2)-(r0A^2))));
pabsB = (rho*(swirl^2)*(omegaB^2)*((rB^2)-(r0B^2))/2)-((rho*(avolflowB.^2))/(8*(pi^2)*(sB^2)*((rB^2)-(r0B^2))));
% pstar
pstarA{i} = pabsA / (rho*(omegaA^2)*(bA^2));
pstarB{i} = pabsB / (rho*(omegaB^2)*(bB^2));
end
Also try:
X=xo:((xf-xo)/divnum):xf
N = length(X) ;
pstarA = zeros(N,1) ;
pstarB = zeros(N,1) ;
for i = 1:N
x = X(i) ;
% radial coordinate
rA = x*bA;
rB = x*bB;
% pressure due to rotation and radial variability
pabsA = (rho*(swirl^2)*(omegaA^2)*((rA^2)-(r0A^2))/2)-((rho*(avolflowA.^2))/(8*(pi^2)*(sA^2)*((rA^2)-(r0A^2))));
pabsB = (rho*(swirl^2)*(omegaB^2)*((rB^2)-(r0B^2))/2)-((rho*(avolflowB.^2))/(8*(pi^2)*(sB^2)*((rB^2)-(r0B^2))));
% pstar
pstarA(i) = pabsA / (rho*(omegaA^2)*(bA^2));
pstarB(i) = pabsB / (rho*(omegaB^2)*(bB^2));
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing Toolbox 的更多信息

标签

产品


版本

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by