vectorCos: Difference between revisions
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|gr2= Math - Vectors | |gr2= Math - Vectors | ||
|descr= Cosine of angle between two 3D vectors. | |descr= Cosine of angle between two 3D or 2D vectors. | ||
|s1= vector1 [[vectorCos]] vector2 | |s1= vector1 [[vectorCos]] vector2 | ||
|p1= vector1: [[ | |p1= vector1: [[Vector3D]], [[Vector2D]] since {{GVI|arma3|2.00|size= 0.75}} - When [[Vector2D]] is provided the z coordinate is defaulted to 0 | ||
|p2= vector2: [[ | |p2= vector2: [[Vector3D]], [[Vector2D]] since {{GVI|arma3|2.00|size= 0.75}} - When [[Vector2D]] is provided the z coordinate is defaulted to 0 | ||
|r1= [[Number]] | |r1= [[Number]] | ||
|x1= < | |x1= <sqf>_cos = getPos player vectorCos [0,0,2];</sqf> | ||
|seealso= [[vectorAdd]] | |seealso= [[vectorAdd]] [[vectorDiff]] [[vectorCrossProduct]] [[vectorDotProduct]] [[vectorMagnitude]] [[vectorMagnitudeSqr]] [[vectorMultiply]] [[vectorDistance]] [[vectorDistanceSqr]] [[vectorDir]] [[vectorUp]] [[setVectorDir]] [[setVectorUp]] [[setVectorDirAndUp]] [[vectorNormalized]] [[vectorFromTo]] [[matrixMultiply]] [[matrixTranspose]] | ||
}} | }} | ||
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<dd class="note"> | <dd class="note"> | ||
{{GVI|arma3|1.22}} Algorithm: | {{GVI|arma3|1.22}} Algorithm: | ||
< | <sqf> | ||
Result = ((x1 * x2) + (y1 * y2) + (z1 * z2))/(( | 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))); | |||
</sqf> | |||
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. | 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. | ||
</dl> | </dl> | ||
Latest revision as of 19:04, 16 April 2026
Description
- Description:
- Cosine of angle between two 3D or 2D vectors.
- Groups:
- Math - Vectors
Syntax
- Syntax:
- vector1 vectorCos vector2
- Parameters:
- vector1: Vector3D, Vector2D since
2.00 - When Vector2D is provided the z coordinate is defaulted to 0 - vector2: Vector3D, Vector2D since 2.00 - When Vector2D is provided the z coordinate is defaulted to 0
- Return Value:
- Number
Examples
- Example 1:
Additional Information
- See also:
- vectorAdd vectorDiff vectorCrossProduct vectorDotProduct vectorMagnitude vectorMagnitudeSqr vectorMultiply vectorDistance vectorDistanceSqr vectorDir vectorUp setVectorDir setVectorUp setVectorDirAndUp vectorNormalized vectorFromTo matrixMultiply matrixTranspose
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord.
Only post proven facts here! Add Note
- Posted on 28 Jun, 2014
- ffur2007slx2_5
-
1.22 Algorithm:
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.