vector notation with data from struct array

Question

Benjamin Pommer 2022-3-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1676779-vector-notation-with-data-from-struct-array

编辑： Matt J 2022-3-22

I have the following problem: I want to operate with variables from my workspace which I saved in a struct array. This will be the argument for a self defined function which you can see in the following:

t_abtast = 2;
data = load('GMapsRoute02182022095722SimulationRun.mat')
v = data.GMapsRoute02182022095722SimulationRun.velocity_kmh(1:10:end)';
a = data.GMapsRoute02182022095722SimulationRun.acc(1:10:end)';
t = data.GMapsRoute02182022095722SimulationRun.t(1:10:end);
E = data.GMapsRoute02182022095722SimulationRun.energy(1:10:end)';
v = v(~isnan(v));
a = a(~isnan(a));
E = E(~isnan(E));
v = smooth(v);
a = smooth(a);
E = smooth(E);
v = v(1:t_abtast:end);
a = a(1:t_abtast:end);
t = t(1:t_abtast:end);
E = E(1:t_abtast:end);
t_delta = t(2)-t(1);
P = [0, diff(E)/t_delta];              
adot = [0, diff(a)/t_delta];
[A,B,X,Y,y,res,x_vec,x_pred,u_pred] = DMDc1(5,10,4,v,a,adot,P);

...

I get this error message:

Error using horzcat

Dimensions of arrays

being concatenated are

not consistent.

Error in DMD_Prediction

(line 42)

P = [0

diff(E)/t_delta];

Before I loaded the variables with the evalin function and there was not problem.

load('GMapsRoute02182022095722SimulationRun.mat')
v = evalin('base','GMapsRoute02182022095722SimulationRun.velocity_kmh');
a = evalin('base','GMapsRoute02182022095722SimulationRun.acc');
t = evalin('base','GMapsRoute02182022095722SimulationRun.t');
E = evalin('base','GMapsRoute02182022095722SimulationRun.energy');