MATLAB Function Reference Volume 1: A - E - Bad Request

2elseif
Purpose Conditionally execute statements
Syntax if expression1
statements1
elseif expression2
statements2
end
Description If expression1 evaluates as false and expression2 as true, MATLAB
executes the one or more commands denoted here as statements2.
A true expression has either a logical true or nonzero value. For nonscalar
expressions, (for example, is matrix A less then matrix B), true means that
every element of the resulting matrix has a logical true or nonzero value.
Expressions usually involve relational operations such as (count < limit) or
isreal(A). Simple expressions can be combined by logical operators (&,|,~) into
compound expressions such as: (count < limit) & ((height - offset) >=
0).
See if for more information.
Remarks else if, with a space between the else and the if, differs from elseif, with
no space. The former introduces a new, nested if, which must have a matching
end. The latter is used in a linear sequence of conditional statements with only
one terminating end.
The two segments shown below produce identical results. Exactly one of the
four assignments to x is executed, depending upon the values of the three
logical expressions, A, B, and C.
if A if A
x = a x = a
else elseif B
if B x = b
x = b elseif C
else x = c
if C else
x = c x = d
else end
x = d
elseif
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