Hello!
So there are a few things going on here.
One thing I noticed is that you turn N, the trajectory array, into a table before putting it back into data. This means that the table ends up nested, where the column inside the table is full of tables. If instead you just put N into the table directly, then you don't have to deal with that.
Second, if you index into a table using smooth parenthesis (), then it returns a table, which is also why your logical indexing wasn't working. If instead you use dot indexing and smooth parentheses, you can retrieve the actual data in the column by index, which can be indexed into logically.
Here is the code that seems to work for me -- I've included comments where I changed things. I hope it does what you intended!
Folder_used = dir('/Users/files4data/*.txt');
files = Folder_used;
amountFILES=numel(files);
for k=1:amountFILES
% for k=1:1
opts = detectImportOptions(files(k).name);
data=readtable(files(k).name,opts);
possibleTrajStr={'Trajectory_deg','trajectory','trajectory_deg','Trajectory','Traj_deg','traj'};
possibleNozStr={'ExpID','Exp_ID','Exp ID'};
headers_in_data =data.Properties.VariableNames;
disp *************************************************************
%%*************************************************************
file=(files(k).name);
left_color = [0 0 0];
right_color = [0 0 0];
set(figure,'defaultAxesColorOrder',[left_color; right_color],...
'units','normalized','outerposition',[0 0 1 1]);
%%*************************************************************
ColForm=varfun(@class,data,'OutputFormat','cell')
[ColIndexLog,ColIndexDouble]=ismember(ColForm,'cell');
CellsInTable=find(ColIndexDouble);
indices = find(abs(CellsInTable)>4);
CellsInTable(indices) = [];
for g=1:numel(CellsInTable)
B=CellsInTable(g);
C=(headers_in_data(B));
CCC=char(string(C{:}));
XC=data.(CCC);
dataLoop=XC;
logicalIndex = ismember(dataLoop, 'UND. -60001');
dataLoop(logicalIndex) = {'NaN'};
S = sprintf('%s*', dataLoop{:});
N = sscanf(S, '%f*');
% N2=array2table(N) - Deleted
data.(CCC)=N;
end
TrajOuty = ismember(headers_in_data,possibleTrajStr);
[~,TrajColID] = find(TrajOuty);
traj=data.(TrajColID); % Changed to dot indexing
% traj=table2array(traj) - Deleted
whos traj
traj_copy = traj;
traj_copy((80>traj_copy)|(traj_copy>100)) = NaN; % Changed & to |
traj_copy=(deg2rad(traj_copy-90))*1000
end
