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matrix.remove_col() - Pine Script Function

`matrix.remove_col()`

Overview

The function removes the column at column index of the id matrix and returns an array containing the removed column’s values.

Syntax

matrix.remove_col(id, column) → array<type>

Parameters

Name	Type	Description
id	any matrix type	A matrix object.

Returns

An array containing the elements of the column removed from the id matrix.

Remarks

Indexing of rows and columns starts at zero. It is far more efficient to declare matrices with explicit dimensions than to build them by adding or removing columns. Deleting a column is also much slower than deleting a row with the matrix.remove_row function.

Examples

Example 1

//@version=6
indicator("matrix_remove_col", overlay = true)// Create a 2x2 matrix with ones.var matrixOrig = matrix.new<int>(2, 2, 1)// Set values to the 'matrixOrig' matrix.matrix.set(matrixOrig, 0, 1, 2)
matrix.set(matrixOrig, 1, 0, 3)
matrix.set(matrixOrig, 1, 1, 4)// Create a copy of the 'matrixOrig' matrix.matrixCopy = matrix.copy(matrixOrig)// Remove the first column from the `matrixCopy` matrix.arr = matrix.remove_col(matrixCopy, 0)// Display matrix elements.
if barstate.islastconfirmedhistory
var t = table.new(position.top_right, 3, 2, color.green)
table.cell(t, 0, 0, "Original Matrix:")
table.cell(t, 0, 1, str.tostring(matrixOrig))
table.cell(t, 1, 0, "Removed Elements:")
table.cell(t, 1, 1, str.tostring(arr))
table.cell(t, 2, 0, "Result Matrix:")
table.cell(t, 2, 1, str.tostring(matrixCopy))

See Also