vectorCos: Difference between revisions

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(Algorithm & note)
(see also)
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| [[vectorAdd]], [[vectorDiff]], [[vectorCrossProduct]], [[vectorDotProduct]], [[vectorMagnitude]], [[vectorMagnitudeSqr]], [[vectorMultiply]], [[vectorDistance]], [[vectorDistanceSqr]], [[vectorDir]], [[vectorUp]], [[setVectorDir]], [[setVectorUp]], [[setVectorDirAndUp]] |= See also
| [[vectorAdd]], [[vectorDiff]], [[vectorCrossProduct]], [[vectorDotProduct]], [[vectorMagnitude]], [[vectorMagnitudeSqr]], [[vectorMultiply]], [[vectorDistance]], [[vectorDistanceSqr]], [[vectorDir]], [[vectorUp]], [[setVectorDir]], [[setVectorUp]], [[setVectorDirAndUp]], [[vectorNormalized]], [[vectorFromTo]]|= See also


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Revision as of 00:08, 7 July 2014

Hover & click on the images for description

Description

Description:
Cosine of angle between two 3D vectors.
Groups:
Uncategorised

Syntax

Syntax:
vector1 vectorCos vector2
Parameters:
vector1: Array
vector2: Array
Return Value:
Number

Examples

Example 1:
_cos = getPos player vectorCos [0,0,2];

Additional Information

See also:
vectorAddvectorDiffvectorCrossProductvectorDotProductvectorMagnitudevectorMagnitudeSqrvectorMultiplyvectorDistancevectorDistanceSqrvectorDirvectorUpsetVectorDirsetVectorUpsetVectorDirAndUpvectorNormalizedvectorFromTo

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note

Notes

Posted on 28 Jun, 2014
ffur2007slx2_5
(ArmA3 1.22)Algorithm: Vector1 = [x1,y1,z1]; Vector2 = [x2,y2,z2]; Result = ((x1 * x2) + (y1 * y2) + (z1 * z2))/((sqrt (x1 ^ 2 + y1 ^ 2 + z1 ^ 2))*(sqrt (x2 ^ 2 + y2 ^ 2 + z2 ^ 2))) Given two vectors of attributes, A and B, the cosine similarity, cos(θ), is represented using a dot product and magnitude. The resulting similarity values indicating intermediate similarity or dissimilarity between two vectors.

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