qempanel saves a matlab file with 3 at structures

Using the code of qem/qemxtract.m

[qemb(2).kn,qemb(2).dipdelta,qemb(2).dxs]=...   % load quad errors
    qemerrload(qemres,fullfile(qemres.datadir,'quaderrors.mat'));
warning('temporary hack! remove following line!')
qemb(2).dipdelta = zeros(size(qemres.dipidx));

A=textscan(fopen(fullfile(qemres.datadir,'skewcor.dat'),'r'),'%s %f','HeaderLines',7); %read from setting manager saved file
qemb(2).skewcor=A{2};
s=load(fullfile(qemres.datadir,'skewerrors.mat'));  % load skew errors
qemb(2).ks=s.ks;
qemb(2).diptilt=s.diprot;

qemb(2).at=qemat(qemres,qemb(2),true);

When a lattice model is stored using the button Store Lattice Model in qempanel 3 AT lattice are saved:

1. r : the nominal lattice
2. rerr : the lattice with the fitted errors
3. rcor : the lattice with fitted errors and corrections (if no correct->save is done rcor = rerr)