# If statement for identifying row/column vectors/matrix/scalars

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Joseph DeMaria on 3 Nov 2020
Commented: Joseph DeMaria on 3 Nov 2020
The question I am trying to solve, is how to create a function that recognizes the input given as either a colum vector, row vector, matrix, or scalar, depending on which category the input falls under it will execute simple arithmetic, that I can do. I have to create a function, myvec(x) that the simple arithmetic I can execute, however, Im not sure how to type the if statements for the conditions the question prompts, for example, for the first condition how would I type
function y=myvec(x)
if y=rowvec? [1:n]? [1,n]?
or what is the correct way to do this, thank you

Sudhakar Shinde on 3 Nov 2020
Edited: Sudhakar Shinde on 3 Nov 2020
'isrow' function returns true if input is row vector.
isrow(in)
'iscolumn' function returns true if input is column vector.
iscolumn(in)
'ismatrix' function returns true if input is matrix.
ismatrix(in)
'isscalar' function returns true if input is scalar.
isscalar(in)
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Joseph DeMaria on 3 Nov 2020
Awesome this is helping so much! Appreciate your guys help so much, so far for my functions code I have
function y=myvec(x)
if isrow(x)
flip(x)
y=x.^2
if iscolumn(x)
y=vec-.5
if ismatrix(x)
y=(x*(x')).^2
if isscalar(x)
y=x
end
end
end
end
end
is this right for such conditions the question prompts?