vectorCos: Difference between revisions
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Lou Montana (talk | contribs) m (Text replacement - "\|x([0-9])= *<code>([^<]*)<\/code>" to "|x$1= <sqf>$2</sqf>") |
Lou Montana (talk | contribs) m (Some wiki formatting) |
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|s1= vector1 [[vectorCos]] vector2 | |s1= vector1 [[vectorCos]] vector2 | ||
|p1= vector1: [[Array]] - vector 3D or 2D (since | |p1= vector1: [[Array]] - vector 3D or 2D (since {{arma3}} v2.00, the z coordinate is defaulted to 0) | ||
|p2= vector2: [[Array]] - vector 3D or 2D (since | |p2= vector2: [[Array]] - vector 3D or 2D (since {{arma3}} v2.00, the z coordinate is defaulted to 0) | ||
|r1= [[Number]] | |r1= [[Number]] | ||
| Line 28: | Line 28: | ||
<dd class="note"> | <dd class="note"> | ||
{{GVI|arma3|1.22}} Algorithm: | {{GVI|arma3|1.22}} Algorithm: | ||
< | <sqf>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)));</ | 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 21:21, 13 May 2022
Description
- Description:
- Cosine of angle between two 3D vectors.
- Groups:
- Math - Vectors
Syntax
- Syntax:
- vector1 vectorCos vector2
- Parameters:
- vector1: Array - vector 3D or 2D (since Arma 3 v2.00, the z coordinate is defaulted to 0)
- vector2: Array - vector 3D or 2D (since Arma 3 v2.00, 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 or on the Forums.
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.