how to convert a single row matrix into a number (double)

how to convert a single row matrix into a number (double) for exemple: [1 2 3 4 5] into 12345

Answer 1

[Rik]

a=[1 2 3 4 5];
b=str2double(sprintf('%d',round(a)));

Another method would be to use positional information:

a=[1 2 3 4 5];
b=sum(a.*10.^((length(a)-1):-1:0));

This second method will often work better, but if values larger than 9 are present in a, this will not return the result you might mean.

[Rik]

You might be able to correct the powers of 10 vector with cumsum(a>10), or more directly with floor(log10(a))

Answer 2

[Adam]

a = [1 2 3 4 5];
str2double( strrep( num2str( a ), ' ', '' ) )

works, but I'm sure there are more elegant or robust ways of doing it.

[ömer özcan]

Thanks