MarkLogic 12 EA 1 Product Documentationvec.subtract
vec.subtract( vector1 as vec.vector, vector2 as vec.vector ) as vec.vector
Summary
Returns the difference of two vectors. The vectors must be of the same dimension.
| Parameters | |
|---|---|
| vector1 | The minuend vector. |
| vector2 | The subtrahend vector. |
Example
const vec1 = vec.vector([3.14,1.59,2.65]) const vec2 = vec.vector([3.58,9.79,3.23]) vec.subtract(vec1,vec2) => "[ -0.44, -8.2, -0.58 ]"
Example
const vec1 = vec.vector(xdmp.toJSON(fn.doc('pronethalol.json')).xpath('/data/array-node{embedding}'))
const vec2 = vec.vector(fn.head(fn.doc('cell_renewal.json')).xpath('/data/array-node{embedding}'))
vec.subtract(vec1,vec2)
=> The difference between vectors in JSON arrays named 'embedding'
in documents 'pronethalol.json' and 'cell_renewal.json'