Delete from Array (G Dataflow)

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Last Modified: January 12, 2018

Deletes a specified element or subarray of an array.

This node returns both the edited array and the deleted element or subarray.

array

The array from which you want to delete elements, rows, columns, pages, and so on. This input is an n-dimension array of any type.

length

Number of elements, rows, columns, or pages to delete.

Default: 1

index

The location of the element or subarray to delete from the array.

If index is unwired, this node deletes from the end of the array.

Behavior of index inputs for Multidimensional Arrays

When you wire an array to this node, the node resizes automatically to display index inputs for each dimension in the array. This node reduces the array in one dimension only, therefore, you can wire only one index input. For example, to delete a row in a 2D array, wire only the row index. To delete a column, wire only the column index.

Relationship between index Inputs and array Dimensions

For multidimensional arrays, index inputs correspond to row-major order. Thus, the first index corresponds last dimension of the array input, and the last index corresponds to the first dimension of the array input. The following table shows the relationship between four index inputs and the dimensions of a 4D array input.

index Order	Corresponding Dimension in array Input	index Name
1	4th	volume index
2	3rd	page index
3	2nd	row index
4	1st	column index

Default: The index of the last element in the array.

array with subset deleted

The array returned with the deleted elements, rows, columns, or pages.

deleted portion

The deleted element or array.

array	deleted portion	Comments
1D array	A scalar containing the 2nd element from array	To delete a single element from a 1D array, leave length unwired, and specify the element to delete in index.
1D array	1D array containing only the 4th element from array	To delete one or more elements from a 1D array, specify the number of elements to delete in length, and the index at which to begin the deletion in index.
3D array of dimensions 10x4x6	3D array of dimensions 2x4x6 containing the last 2 pages from array	The outer dimension size of deleted portion is the value of length, and the inner dimension size(s) match that of array.
2D array of dimensions 8x5	1D array containing all elements from row 3 of array	If you do not wire a value to length, deleted portion is an array of one less dimension than array containing the portion of the array deleted from array.
2D array of dimensions 6x3	2D array of dimensions 6x2	If you wire a value to length and a negative value to the index, deleted portion is an array with an outer dimension size of the value of length subtracted by the absolute value of the index.