B.1.4 Arrays

Functions which operate on array-valued cells. You can only use these functions on values which are already arrays. In most cases that means on values in table columns which are declared as array-valued. FITS and VOTable tables can have columns which contain array values, but other formats such as CSV cannot.

sum( array )

Returns the sum of all the non-blank elements in the array. If array is not a numeric array, null is returned.

mean( array )

Returns the mean of all the non-blank elements in the array. If array is not a numeric array, null is returned.

minimum( array )

Returns the smallest of the non-blank elements in the array. If array is not a numeric array, null is returned.

maximum( array )

Returns the largest of the non-blank elements in the array. If array is not a numeric array, null is returned.

size( array )

Returns the number of elements in the array. If array is not an array, zero is returned.