How to replace elements in a integer vector with chars using a lookup table
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Emilio Murcia Pacheco
on 23 Jan 2020
Commented: Emilio Murcia Pacheco
on 24 Jan 2020
I have a vector of unsigned integer (A) Nx1 uint8 (N>50000) populated with values from 0 to 6.
On the other hand there is a lookup table (B) 7x2 table, like this:
STATE CODE
----- ----
'Str 1' 0
'Str 2' 1
... ...
'Str 7' 6
class(B.STATE) --> cell
class(B.CODE) --> double
Question: How can I obtain a vector of strings (C) with a size Nx1, with each element being the match in the lookup table?
Example: A(i) = 6 --> C(i) = 'Str 7'
Thanks for your support.
E.
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Accepted Answer
Akira Agata
on 23 Jan 2020
How about the following way?
% Sample data
A = randi([0 6],10,1);
B = table(compose('Str %d',1:7)',(0:6)',...
'VariableNames',{'STATE','CODE'});
% Create the output array
[~,loc] = ismember(A,B.CODE);
C = B.STATE(loc);
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