How to check whether multiple variables are numeric using a loop

5 次查看（过去 30 天）
Richard Rees
Richard Rees 2021-6-7
评论： Richard Rees 2021-6-8
Hi everyone,
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?
Many thanks
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
isfile(File_loc_ID)
File_loc_ID = string(File_loc_ID);
importdata(File_loc_ID);
fprintf ('Loading - %s \n.',string(File_loc_ID));
continue
% Variable is present from loading - skip to next section
elseif isnumeric(contains(WS,D_mat_search(aa)))
continue
% skip this
% Variables need to be calculated and saved
else
% Do stuff
end
end

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2021-6-7
varname=D_mat_search(aa);
if exist(varname,'var') && isnumeric(eval(varname)) && isfile(File_loc_ID) %BAD

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by