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Scripting Guide > JSL Building Blocks > Iterate > Summation
Publication date: 11/10/2021

Summation

The Summation() function adds the body results over all i values. The syntax is:

Summation( initialization, limitvalue, body );

For example:

s = Summation( i = 1, 10, i );

returns 55, the result of 1+2+3+4+5+6+7+8+9+10.

The script works like this:

s =

Sets the s variable to the value of the function.

Summation(

Begins the Summation() loop.

i = 1,

Sets i to 1.

10,

Sets the limit of i to 10.

i

All values of i from 1 to 10 are added together, resulting in 55.

);

Ends the loop.

This behavior is similar to Σ in the Formula Editor. The following expression:

Summation( i = 1, N Row(), x ^ 2 );

is equivalent to the following formula in the Formula Editor:

Equation shown here
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