Issue regarding loop to find Root mean square error in MATLAB

I have 6 different data sets from sensor and I want to find out the Root mean Square error but of the limited signal with limits means RMSE of sig_diff_lim.

I have tried to apply loop but it’s not working can anybody tell me where I am at fault.

Thanks in anticipation.

clc

drv(1)=load('a.mat');
drv(2)=load('b.mat');
drv(3)=load('c.mat');
drv(4)=load('d.mat');
drv(5)=load('e.mat');
drv(6)=load('h.mat');

for i= 1:numel(drv)
  t=drv(i).T;
  ref=drv(i).P;
  lws=drv(i).SWA;

sig_diff(i,:) =lws(i)-ref(i);

    swvel_thres=10;
    vehvel=30;   
    SAmax=90;

 sig_diff_lim(i,:)=sig_diff((lws_7(i)<SAmax)&(lws_7(i)>-SAmax)&(swav(i)<swvel_thres)&(vel(i)>vehvel));
    square_error(i,:) = (sig_diff_lim(i)).^2;
    mse(i,:)=  mean(square_error(i));
    rmse(i,:) = sqrt(mse(i));

    end
    rmse 
    mse

[Kristen Amaddio]

What issue are you experiencing? Is the code resulting in an error? Are the outputs not what you expect? It is hard to tell what might be going wrong without having an example MAT-file that reproduces the issue.