Other Methods of Subsetting and Sorting Variables

User Guide > Creating and Querying Tables > Other Methods of Subsetting and Sorting Variables

PV‑WAVE provides other functions for subsetting and sorting the values in one-dimensional arrays. The SORT function sorts the subscripts of an array into ascending order. For example:

array = [4, 3, 7, 1, 2]

index = SORT(array)

PRINT, index

; PV-WAVE prints:  3   4   1   0   2

This results because: A3 < A4 < A1 < A0 < A2. To see the sorted array, enter:

PRINT, array(index)

; PV-WAVE prints:  1   2   3   4   7

The WHERE function allows the use of Boolean expressions to select ranges of subscripts in an array. For example:

index = WHERE((array GT 50) AND (array LT 100))

result = array(index)

For more information on these functions, see the online help.

Version 2017.1