if

Syntax (if-expression)

plot <plot_name> = if <condition>
then <expression1>
else <expression2>;

plot <plot_name> = if <condition1>
then <expression1>
else if <condition2>
then <expression2>
else <expression3>;

Syntax (if-statement)

plot <plot_name>;
if <condition1> [then] {
<plot_name> = <expression1>;
} else if <condition2> [then] {
<plot_name> = <expression2>;
} else {
<plot_name> = <expression3>;
}

plot <plot_name>;
if <condition1> [then] {
<plot_name > = <expression1>;
} else {
if <condition2> [then] {
<plot_name> = <expression2>;
} else {
<plot_name> = <expression3>;
}
}

Description

As a reserved word, if is used in if-expressions and if-statements to specify a conditional operator with then and else branches. Both branches are required for the operator to be valid. However, while the if-expression always calculates both then and else branches, the if-statement only calculates the branch defined by whether the condition is true or false. In thinkScript®, there is also If-function having syntax and usage different from those of the reserved word. The if-expression can also be used in other functions such as, for example, AssignValueColor, AssignPriceColor, etc. Note that you can also use a def variable instead of input price = close;
input long_average = yes;

plot SimpleAvg = Average(price, if long_average then 26 else 12);

plot ExpAvg;
if long_average {
ExpAvg = ExpAverage(price, 26);
} else {
ExpAvg = ExpAverage(price, 12);
}

In this example, if-expression and if-statement are used to control the length parameter of moving averages.

def myHigh;

if high > myHigh[1] {

    myHigh = high;

} else {

    myHigh = myHigh[1];

}



plot H = myHigh;