Error: Inputs must be character vectors, cell arrays of character vectors, or string arrays.

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Leon
Leon 2025-6-11
评论： Star Strider 2025-6-11
Here is an example of my Variable A:
A=
"33RO30160505"
"33RO30160507"
"33RO30160508"
isstring(A) = 1.
However, I keep getting the error below:
Error using string/strcat (line 33)
Inputs must be character vectors, cell arrays of character vectors, or string arrays.
Error in initialLoading (line 196)
L2 = strcat('CODE: [', A(1), ...
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Does anyone know what is going on here?

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Star Strider
Star Strider 2025-6-11
Ran in:
I am not certain what result you want, however for string arrays, you can just use arithmetic operators.
Try this --
A = ["33RO30160505"
"33RO30160507"
"33RO30160508"];
L2 = "CODE: [" + A +"]"
L2 = 3×1 string array
"CODE: [33RO30160505]" "CODE: [33RO30160507]" "CODE: [33RO30160508]"
.
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Leon
Leon 2025-6-11
It turns out that the error was caused by another variable being numeric instead of a string. Sorry about that. Many thanks for your help anyway.

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