How to check whether multiple variables are numeric using a loop
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Richard Rees on 7 Jun 2021
Commented: Richard Rees on 8 Jun 2021
My problem is how to check whether a variable within the workspace is numeric. I know about "isnumeric" the problem I have is trying to actually get MATLAB to tell me whether the variable content is numeric and not the string that I use within my loops to identify the variable within the workspace.
The attached code forms part of a conditional set of instruction on how to load in data, depending on whether it exists (non pre-allocated memory) or is an actual file.
Could you help?
D_mat_SA_search_master = ["D_mat_N_sqz_27.mat" "D_mat_G_sqz_27.mat"]
for aa = 1:size(D_mat_SA_search_master,2)
File_loc_ID = fullfile(Main_sim_directory,D_mat_SA_search_master(Main_loop,aa));
%If variable not in WS and is a file - load up
if ~isnumeric(contains(WS,D_mat_search(aa))) && isfile(File_loc_ID) % Problem here
File_loc_ID = string(File_loc_ID);
fprintf ('Loading - %s \n.',string(File_loc_ID));
% Variable is present from loading - skip to next section
% skip this
% Variables need to be calculated and saved
% Do stuff
and not the string that I use within my loops to identify the variable within the workspace.
It is bad practice to be assigning names dynamically to data read in from files,
if exist(varname,'var') && isnumeric(eval(varname)) && isfile(File_loc_ID) %BAD
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