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if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true.An expression is true when its result is nonempty and contains only nonzero elements logical or real numeric. Otherwise, the expression is false. The simplest decision to make is whether to do something — or not. However, you might need to decide between two alternatives in MATLAB. When a situation is true, you perform one task, but when it’s false, you perform another task. There are still other times when. MATLAB uses if paired with a matching end to provide conditional execution of statements. Additional elseif statements and/or an else statement may be used. It is good programming practice to create M-files with a clear structure and plenty of comments. This can easily be done using the MATLAB editor. Just give a>b some meaningful name which obviously I can't because this is a contextless question, and assign it in a line of its own, then col1isGreen for example is very clear, because the "1." bit is just a conversion from 0-based boolean logic to 1-based matlab indices, which is obvious and familiar to anyone working in matlab.

MATLAB is a special-purpose language that is an excellent choice for writing moderate-size programs that solve problems involving the manipulation of numbers. The design of the language makes it possible to write a powerful program in a few lines. elseif. 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. I'm new to MATLAB but not new to programming and in my engineering class they are simply teaching the basics of if/elseif/else and loops. Well we have a homework assignment and I feel ashamed that I cannot figure it out. I must be missing the simplicity in it somewhere. MATLAB doesn't have conditional expressions, but in some situations you can get a similar effect by saying, e.g., var = condtrue_expr1-condfalse_expr.Unlike C's conditional expression, this will of course always evaluate both true_expr and false_expr, and if cond happens not to be either 0 or 1 note: false behaves like 0; true behaves like 1 you'll get crazy results. I'm trying to utilize a logical OR in an IF statement within MATLAB. Where TRI is a 32x2 vector, I want to check if a certain row in TRI contains a 28 or 31, if so do some operation. I can't figure out why this is difficult, the line containing the logic is currently.

This three minute video takes a look at the “Switch case” flow control statement and contrasts it with the more familiar “If elseif” flow control statement. Often times, people will use an “If elseif” statement where a “Switch case” statement is going to be cleaner and easier to. Jul 25, 2013 · The above code checks to see what range x falls in, then enters an if/else statement that determines whether it is evenly divisible by one. If not, this means x is not an integer value and the corresponding text is displayed.