Vector function | IBM Cloud Pak for Data as a Service

Vector function

Use the vector function to access an element in a vector column.

The function is in the Vector category of the expression editor. The examples show the function as it appears in a Derivation field in the Transformer stage.

ElementAt

Accesses an element of a vector. The vector index starts at 0. The function can be used as part of, or the whole of an expression.

Input: input_column (column name) index (int)
Output: element of vector
Examples. The following example outputs the third element of the vector in the column mylink.myvector.
```
ElementAt(mylink.myvector, 2)
```
The following example outputs the third element of the vector in the column mylink.myvector and adds one it.
```
ElementAt(mylink.myvector, 2) + 1
```