series_dot_product()

Calculates the dot product of two numeric series.

The function series_dot_product() takes two numeric series as input, and calculates their dot product.

Syntax

series_dot_product(series1, series2)

Alternate syntax

series_dot_product(series, numeric)

series_dot_product(numeric, series)

Parameters

Returns

Returns a value of type real whose value is the sum over the product of each element of series1 with the corresponding element of series2. In case both series length isn’t equal, the longer series will be truncated to the length of the shorter one. Any non-numeric element of the input series will be ignored.

Example

range x from 1 to 3 step 1 
| extend y = x * 2
| extend z = y * 2
| project s1 = pack_array(x,y,z), s2 = pack_array(z, y, x)
| extend s1_dot_product_s2 = series_dot_product(s1, s2)

range x from 1 to 3 step 1 
| extend y = x * 2
| extend z = y * 2
| project s1 = pack_array(x,y,z), s2 = x
| extend s1_dot_product_s2 = series_dot_product(s1, s2)