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Undefined function 'concat' for input arguments of type 'double'.

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Hiralben Mistry
Hiralben Mistry el 11 de Nov. de 2018
Respondida: TADA el 11 de Nov. de 2018
I am getting this error while running the following code. 'Undefined function 'concat' for input arguments of type 'double'.'
load train.mat; y1=y; load handel.mat; y2=y; load gong.mat; y3=y; concat(y1,y2,y3);

Respuestas (1)

TADA
TADA el 11 de Nov. de 2018
The error message pretty much sums it up. You can't concat arguments of type double.
If you are trying to create a vector, use either the bracket syntax
v1 = [y1, y2, y3] % for a row vector (commas aren't mandatory)
v2 = [y1; y2; y3] % for column vector (semicolons are mandatory)
or you can use the equivalent functions vertcat or horzcat
If you're trying to generate a string, you must first convert them to strings
str = strcat(num2str(y1), num2str(y2), num2str(y3));
% or use brackets to concat the character vectors
str = [num2str(y1), num2str(y2), num2str(y3)] % again commas aren't necessary
% or the equivalent function call:
str = horzcat(num2str(y1), num2str(y2), num2str(y3));

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