Function Entry: VLE-VECTOR-ISYAXIS

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Function Entry: VLE-VECTOR-ISYAXIS

Name

vle-vector-isyaxis

Class

BricsCAD VLE Library Function

Syntax

(vle-vector-isyaxis vec)

Arguments and Values

vec a 2d or 3d vector list

Description

This function returns whether vec is equal to Y-axis vector (0 1 0).

Return Values

T or NIL

Examples

(setq vec '(1 1
0))

(vle-vector-isyaxis vec)

NIL

(setq vec '(0 1 0))

(vle-vector-isyaxis vec)

T

Notes

the vec must be in 1-unit length (normalised)

Availability

AutoCAD 2026: not documented.
BricsCAD V26: documented.
Status: BricsCAD-only.

Source Notes

[vle-vector-isyaxis (BricsCAD V26 DevRef)](https://developer.bricsys.com/bricscad/help/en_US/V26/DevRef/source/vle-vector-isyaxis.htm)
Status: documented (Phase 3 follow-up: body filled from the BricsCAD V26 per-symbol page on 2026-04-26).