Need Conditional ElseIf statement

w=[200 205 188;169 255 156;192 168 172]

if(0<w(5)<255)

   x=1;

else

   x=2;
end

for this kind of code i'm getting x value as 1.can anyone help me to identify what mistake i have made...

Answer 1

[Doug Hull]

(0<w(5)<255)

You probably mean this:

((0 < w(5)) & (w(5) < 255))

Evaluating yours left to right:

0<w(5)<255

TRUE < 255

TRUE

[Sudharsan]

Thank You Doug Hull :)

Answer 2

[Matt Kindig]

Matlab won't correctly parse the 0<w(5)<255 statement as you intend. (Instead, it will evaluate (0 < w(5)) first (which returns a logical value 0 or 1). Matlab then evaluates (0 or 1) < 255, which is always true, so x=1 for all values of w.

Instead, use

if (0 < w(5)) && (w(5) < 255),
    x= 1;
else
    x=2;
end

[Sudharsan]

Thank You Matt Kindig :)