MATLAB: Loop through list of variable in workspace to get and store in matrix

arraycell arraysfor loopMATLABworkspace

How can i loop through list of variable 'selected' in workspace to get and store in one matrix (h).
it only stores the last matrix using my code. please help
clear
A=[1, 2, 3]'
B=[3,4,5]'
C=[3,7,9]'
 
x=who
 
selected={'A', 'B' 'C'};
 
m=length(selected)
h=zeros(3,m)
 
for cv = x 
 y= eval(sprintf('%1$s', cv{m})) 
 h(:,cv) = y
end
%%Result
A=[1 3 3;2 4 7; 3 5 9]

Best Answer

selected={'A', 'B' 'C'};
filename = 'YourFile.mat';
vars_present = who('-file', filename);
present_mask = ismember(selected, vars_present);
present_idx = find(present_mask);
num_selected = length(selected);
datacell = cell(1, num_selected);
for cv = present_idx
    varname = selected{cv};
    datastruct = load(filename, varname);
    datacell{cv} = datastruct.(varname);
end
if isempty(present_idx)
    %NONE of the vars are present. Use 0 all around
    datacell(1:num_selected) = {0};
else
    %fill in the missing the same size as the first that exists
    numrow = size(datacell(present_idx{1}), 1);
    datacell(~present_mask) = {zeros(numrow,1)};
end
h = cell2mat(datacell);
%now write out h to appropriate csv file
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