Investment Studio > Expressions > Functions > DSP > TRIANGLE
| Vector form: | float array[1][length] triangle(integer length) Returns a row vector (one row, length columns) containing the values of a triangular window starting at position 1 and ending at position length > 1. |
| Scalar form: | float triangle(integer length, integer
position) Returns the value in position >= 1 of a triangular window starting at position 1 and ending at position length > 1. |
The triangular window function (also referred to as the Bartlett function) is defined as
m = length -1
n = position - 1
| ì | 2 * n / m, |
0 <= n <= m/2 |
||
triangle[n] = |
í | 2 - 2 * n / m, |
m/2 < n <= m |
|
| î | 0, |
otherwise |
Example
The graph source
=triangle(100, x)
can be used to create the following graph: