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# BIASDISTCARTESIAN

The `BIASDISTCARTESIAN` field specifier allows you to boost the score of any document according to its distance from a specified point using Cartesian coordinates (X/Y).

## Format

    FieldText=BIASDISTCARTESIAN{coordX,coordY,range,maxboost}:X:Y

`coordX` | The specified x coordinate.
`coordY` | The specified y coordinate.
`range` | The distance in kilometers from the specified coordinates.
`maxboost` | The maximum percentage to boost the result.
`X` | The document field containing the X coordinate.
`Y` | The document field containing the Y coordinate.

You must specify two fields in the order `X:Y`. The fields must be `NumericType`.

## Example

    &fieldtext=BIASDISTCARTESIAN{10,11,5,7}:X:Y

In this example, all documents whose (X/Y) position is within a distance of 5 units of the point (`10,11`) are given a relevance boost. The maximum boost of `7` percent is given to documents at the given point. The boost decreases linearly down to 0 boost at 5 units.

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